Release 2.2.3

AUTHORS.txt

@@ -6,10 +6,10 @@ Michael Geary <mike@geary.com>
 Stefan Petre <stefan.petre@gmail.com>
 Yehuda Katz <wycats@gmail.com>
 Corey Jewett <cj@syntheticplayground.com>
-Klaus Hartl <klaus.hartl@googlemail.com>
+Klaus Hartl <klaus.hartl@gmail.com>
 Franck Marcia <franck.marcia@gmail.com>
 Jörn Zaefferer <joern.zaefferer@gmail.com>
-Paul Bakaus <paul.bakaus@googlemail.com>
+Paul Bakaus <paul.bakaus@gmail.com>
 Brandon Aaron <brandon.aaron@gmail.com>
 Mike Alsup <malsup@gmail.com>
 Dave Methvin <dave.methvin@gmail.com>
@@ -47,7 +47,7 @@ Matt Curry <matt@pseudocoder.com>
 Michael Monteleone <michael@michaelmonteleone.net>
 Noah Sloan <noah.sloan@gmail.com>
 Tom Viner <github@viner.tv>
-Douglas Neiner <doug@pixelgraphics.us>
+Douglas Neiner <doug@dougneiner.com>
 Adam J. Sontag <ajpiano@ajpiano.com>
 Dave Reed <dareed@microsoft.com>
 Ralph Whitbeck <ralph.whitbeck@gmail.com>
@@ -57,7 +57,7 @@ J. Ryan Stinnett <jryans@gmail.com>
 unknown <Igen005@.upcorp.ad.uprr.com>
 temp01 <temp01irc@gmail.com>
 Heungsub Lee <h@subl.ee>
-Colin Snover <colin@alpha.zetafleet.com>
+Colin Snover <github.com@zetafleet.com>
 Ryan W Tenney <ryan@10e.us>
 Pinhook <contact@pinhooklabs.com>
 Ron Otten <r.j.g.otten@gmail.com>
@@ -69,7 +69,7 @@ Henri Wiechers <hwiechers@gmail.com>
 Russell Holbrook <russell.holbrook@patch.com>
 Julian Aubourg <aubourg.julian@gmail.com>
 Gianni Alessandro Chiappetta <gianni@runlevel6.org>
-Scott Jehl <scott@scottjehl.com>
+Scott Jehl <scottjehl@gmail.com>
 James Burke <jrburke@gmail.com>
 Jonas Pfenniger <jonas@pfenniger.name>
 Xavi Ramirez <xavi.rmz@gmail.com>
@@ -78,10 +78,10 @@ Sylvester Keil <sylvester@keil.or.at>
 Brandon Sterne <bsterne@mozilla.com>
 Mathias Bynens <mathias@qiwi.be>
 Timmy Willison <timmywillisn@gmail.com>
-Corey Frang <gnarf@gnarf.net>
+Corey Frang <gnarf37@gmail.com>
 Digitalxero <digitalxero>
 Anton Kovalyov <anton@kovalyov.net>
-David Murdoch <musicisair@yahoo.com>
+David Murdoch <david@davidmurdoch.com>
 Josh Varner <josh.varner@gmail.com>
 Charles McNulty <cmcnulty@kznf.com>
 Jordan Boesch <jboesch26@gmail.com>
@@ -139,7 +139,7 @@ Chris Faulkner <thefaulkner@gmail.com>
 Elijah Manor <elijah.manor@gmail.com>
 Daniel Chatfield <chatfielddaniel@gmail.com>
 Nikita Govorov <nikita.govorov@gmail.com>
-Wesley Walser <wwalser@atlassian.com>
+Wesley Walser <waw325@gmail.com>
 Mike Pennisi <mike@mikepennisi.com>
 Markus Staab <markus.staab@redaxo.de>
 Dave Riddle <david@joyvuu.com>
@@ -170,6 +170,8 @@ Paul Ramos <paul.b.ramos@gmail.com>
 Rod Vagg <rod@vagg.org>
 Bennett Sorbo <bsorbo@gmail.com>
 Sebastian Burkhard <sebi.burkhard@gmail.com>
+Zachary Adam Kaplan <razic@viralkitty.com>
+nanto_vi <nanto@moon.email.ne.jp>
 nanto <nanto@moon.email.ne.jp>
 Danil Somsikov <danilasomsikov@gmail.com>
 Ryunosuke SATO <tricknotes.rs@gmail.com>
@@ -177,62 +179,70 @@ Jean Boussier <jean.boussier@gmail.com>
 Adam Coulombe <me@adam.co>
 Andrew Plummer <plummer.andrew@gmail.com>
 Mark Raddatz <mraddatz@gmail.com>
+Isaac Z. Schlueter <i@izs.me>
+Karl Sieburg <ksieburg@yahoo.com>
+Pascal Borreli <pascal@borreli.com>
+Nguyen Phuc Lam <ruado1987@gmail.com>
 Dmitry Gusev <dmitry.gusev@gmail.com>
 Michał Gołębiowski <m.goleb@gmail.com>
-Nguyen Phuc Lam <ruado1987@gmail.com>
+Li Xudong <istonelee@gmail.com>
+Steven Benner <admin@stevenbenner.com>
 Tom H Fuertes <tomfuertes@gmail.com>
-Brandon Johnson <bjohn465+github@gmail.com>
+Renato Oliveira dos Santos <ros3@cin.ufpe.br>
+ros3cin <ros3@cin.ufpe.br>
 Jason Bedard <jason+jquery@jbedard.ca>
 Kyle Robinson Young <kyle@dontkry.com>
-Renato Oliveira dos Santos <ros3@cin.ufpe.br>
 Chris Talkington <chris@talkingtontech.com>
 Eddie Monge <eddie@eddiemonge.com>
 Terry Jones <terry@jon.es>
 Jason Merino <jasonmerino@gmail.com>
 Jeremy Dunck <jdunck@gmail.com>
 Chris Price <price.c@gmail.com>
+Guy Bedford <guybedford@gmail.com>
 Amey Sakhadeo <me@ameyms.com>
+Mike Sidorov <mikes.ekb@gmail.com>
 Anthony Ryan <anthonyryan1@gmail.com>
 Dominik D. Geyer <dominik.geyer@gmail.com>
 George Kats <katsgeorgeek@gmail.com>
 Lihan Li <frankieteardrop@gmail.com>
 Ronny Springer <springer.ronny@gmail.com>
-Marian Sollmann <marian.sollmann@cargomedia.ch>
-Corey Frang <gnarf37@gmail.com>
 Chris Antaki <ChrisAntaki@gmail.com>
-Noah Hamann <njhamann@gmail.com>
+Marian Sollmann <marian.sollmann@cargomedia.ch>
+njhamann <njhamann@gmail.com>
+Ilya Kantor <iliakan@gmail.com>
 David Hong <d.hong@me.com>
+John Paul <john@johnkpaul.com>
 Jakob Stoeck <jakob@pokermania.de>
-Christopher Jones <christopherjonesqed@gmail.com>
+Christopher Jones <chris@cjqed.com>
 Forbes Lindesay <forbes@lindesay.co.uk>
-John Paul <john@johnkpaul.com>
 S. Andrew Sheppard <andrew@wq.io>
 Leonardo Balter <leonardo.balter@gmail.com>
 Roman Reiß <me@silverwind.io>
 Benjy Cui <benjytrys@gmail.com>
 Rodrigo Rosenfeld Rosas <rr.rosas@gmail.com>
 John Hoven <hovenj@gmail.com>
+Philip Jägenstedt <philip@foolip.org>
 Christian Kosmowski <ksmwsk@gmail.com>
 Liang Peng <poppinlp@gmail.com>
 TJ VanToll <tj.vantoll@gmail.com>
 Senya Pugach <upisfree@outlook.com>
 Aurelio De Rosa <aurelioderosa@gmail.com>
 Nazar Mokrynskyi <nazar@mokrynskyi.com>
+Amit Merchant <bullredeyes@gmail.com>
+Jason Bedard <jason+github@jbedard.ca>
 Arthur Verschaeve <contact@arthurverschaeve.be>
 Dan Hart <danhart@notonthehighstreet.com>
-Scott González <scott.gonzalez@gmail.com>
-Zheming Sun <mescodasun@gmail.com>
 Bin Xin <rhyzix@gmail.com>
 David Corbacho <davidcorbacho@gmail.com>
 Veaceslav Grimalschi <grimalschi@yandex.ru>
 Daniel Husar <dano.husar@gmail.com>
-Jason Bedard <jason+github@jbedard.ca>
+Frederic Hemberger <mail@frederic-hemberger.de>
 Ben Toews <mastahyeti@gmail.com>
 Aditya Raghavan <araghavan3@gmail.com>
+Victor Homyakov <vkhomyackov@gmail.com>
+Shivaji Varma <contact@shivajivarma.com>
 Nicolas HENRY <icewil@gmail.com>
-Norman Xu <homyu.shinn@gmail.com>
 Anne-Gaelle Colom <coloma@westminster.ac.uk>
-Victor Homyakov <vkhomyackov@gmail.com>
 George Mauer <gmauer@gmail.com>
 Leonardo Braga <leonardo.braga@gmail.com>
 Stephen Edgar <stephen@netweb.com.au>
@@ -246,20 +256,22 @@ Calvin Metcalf <calvin.metcalf@gmail.com>
 Mu Haibao <mhbseal@163.com>
 Richard McDaniel <rm0026@uah.edu>
 Chris Rebert <github@rebertia.com>
+Gabriel Schulhof <gabriel.schulhof@intel.com>
 Gilad Peleg <giladp007@gmail.com>
 Martin Naumann <martin@geekonaut.de>
+Marek Lewandowski <m.lewandowski@cksource.com>
 Bruno Pérel <brunoperel@gmail.com>
 Reed Loden <reed@reedloden.com>
 Daniel Nill <daniellnill@gmail.com>
 Yongwoo Jeon <yongwoo.jeon@navercorp.com>
 Sean Henderson <seanh.za@gmail.com>
-Adrian Olek <adrianolek@gmail.com>
 Richard Kraaijenhagen <stdin+git@riichard.com>
+Connor Atherton <c.liam.atherton@gmail.com>
 Gary Ye <garysye@gmail.com>
 Christian Grete <webmaster@christiangrete.com>
 Liza Ramo <liza.h.ramo@gmail.com>
-Joelle Fleurantin <joasqueeniebee@gmail.com>
 Julian Alexander Murillo <julian.alexander.murillo@gmail.com>
+Joelle Fleurantin <joasqueeniebee@gmail.com>
 Jun Sun <klsforever@gmail.com>
 Devin Wilson <dwilson6.github@gmail.com>
 Todor Prikumov <tono_pr@abv.bg>

package.json

@@ -2,12 +2,12 @@
   "name": "jquery",
   "title": "jQuery",
   "description": "JavaScript library for DOM operations",
-  "version": "1.12.3",
+  "version": "2.2.3",
   "main": "dist/jquery.js",
   "homepage": "http://jquery.com",
   "author": {
     "name": "jQuery Foundation and other contributors",
-    "url": "https://github.com/jquery/jquery/blob/1.12-stable/AUTHORS.txt"
+    "url": "https://github.com/jquery/jquery/blob/2.2.3/AUTHORS.txt"
   },
   "repository": {
     "type": "git",
@@ -41,11 +41,10 @@
     "gzip-js": "0.3.2",
     "jsdom": "5.6.1",
     "load-grunt-tasks": "1.0.0",
-    "npm": "2.1.12",
     "qunitjs": "1.17.1",
     "qunit-assert-step": "1.0.3",
     "requirejs": "2.1.17",
-    "sinon": "1.12.2",
+    "sinon": "1.10.3",
     "sizzle": "2.2.1",
     "strip-json-comments": "1.0.3",
     "testswarm": "1.1.0",

src/.jshintrc

@@ -10,7 +10,6 @@
 	"undef": true,
 	"unused": true,
 
-	"evil": true,
 	"sub": true,
 
 	// Support: IE < 10, Android < 4.1
@@ -23,8 +22,8 @@
 		"JSON": false,
 
 		"jQuery": true,
-		"define": false,
-		"module": false,
+		"define": true,
+		"module": true,
 		"noGlobal": true
 	}
 }

src/ajax.js

@@ -9,21 +9,19 @@ define( [
 	"./core/init",
 	"./ajax/parseJSON",
 	"./ajax/parseXML",
+	"./event/trigger",
 	"./deferred"
 ], function( jQuery, document, rnotwhite, location, nonce, rquery ) {
 
 var
 	rhash = /#.*$/,
 	rts = /([?&])_=[^&]*/,
-
-	// IE leaves an \r character at EOL
-	rheaders = /^(.*?):[ \t]*([^\r\n]*)\r?$/mg,
+	rheaders = /^(.*?):[ \t]*([^\r\n]*)$/mg,
 
 	// #7653, #8125, #8152: local protocol detection
 	rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/,
 	rnoContent = /^(?:GET|HEAD)$/,
 	rprotocol = /^\/\//,
-	rurl = /^([\w.+-]+:)(?:\/\/(?:[^\/?#]*@|)([^\/?#:]*)(?::(\d+)|)|)/,
 
 	/* Prefilters
 	 * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example)
@@ -46,11 +44,9 @@ var
 	// Avoid comment-prolog char sequence (#10098); must appease lint and evade compression
 	allTypes = "*/".concat( "*" ),
 
-	// Document location
-	ajaxLocation = location.href,
-
-	// Segment location into parts
-	ajaxLocParts = rurl.exec( ajaxLocation.toLowerCase() ) || [];
+	// Anchor tag for parsing the document origin
+	originAnchor = document.createElement( "a" );
+	originAnchor.href = location.href;
 
 // Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport
 function addToPrefiltersOrTransports( structure ) {
@@ -73,7 +69,7 @@ function addToPrefiltersOrTransports( structure ) {
 			while ( ( dataType = dataTypes[ i++ ] ) ) {
 
 				// Prepend if requested
-				if ( dataType.charAt( 0 ) === "+" ) {
+				if ( dataType[ 0 ] === "+" ) {
 					dataType = dataType.slice( 1 ) || "*";
 					( structure[ dataType ] = structure[ dataType ] || [] ).unshift( func );
 
@@ -117,7 +113,7 @@ function inspectPrefiltersOrTransports( structure, options, originalOptions, jqX
 // that takes "flat" options (not to be deep extended)
 // Fixes #9887
 function ajaxExtend( target, src ) {
-	var deep, key,
+	var key, deep,
 		flatOptions = jQuery.ajaxSettings.flatOptions || {};
 
 	for ( key in src ) {
@@ -137,7 +133,8 @@ function ajaxExtend( target, src ) {
  * - returns the corresponding response
  */
 function ajaxHandleResponses( s, jqXHR, responses ) {
-	var firstDataType, ct, finalDataType, type,
+
+	var ct, type, finalDataType, firstDataType,
 		contents = s.contents,
 		dataTypes = s.dataTypes;
 
@@ -226,7 +223,7 @@ function ajaxConvert( s, response, jqXHR, isSuccess ) {
 
 		if ( current ) {
 
-			// There's only work to do if current dataType is non-auto
+		// There's only work to do if current dataType is non-auto
 			if ( current === "*" ) {
 
 				current = prev;
@@ -269,7 +266,7 @@ function ajaxConvert( s, response, jqXHR, isSuccess ) {
 				if ( conv !== true ) {
 
 					// Unless errors are allowed to bubble, catch and return them
-					if ( conv && s[ "throws" ] ) { // jscs:ignore requireDotNotation
+					if ( conv && s.throws ) {
 						response = conv( response );
 					} else {
 						try {
@@ -299,9 +296,9 @@ jQuery.extend( {
 	etag: {},
 
 	ajaxSettings: {
-		url: ajaxLocation,
+		url: location.href,
 		type: "GET",
-		isLocal: rlocalProtocol.test( ajaxLocParts[ 1 ] ),
+		isLocal: rlocalProtocol.test( location.protocol ),
 		global: true,
 		processData: true,
 		async: true,
@@ -393,30 +390,26 @@ jQuery.extend( {
 		// Force options to be an object
 		options = options || {};
 
-		var
-
-			// Cross-domain detection vars
-			parts,
-
-			// Loop variable
-			i,
+		var transport,
 
 			// URL without anti-cache param
 			cacheURL,
 
-			// Response headers as string
+			// Response headers
 			responseHeadersString,
+			responseHeaders,
 
 			// timeout handle
 			timeoutTimer,
 
+			// Url cleanup var
+			urlAnchor,
+
 			// To know if global events are to be dispatched
 			fireGlobals,
 
-			transport,
-
-			// Response headers
-			responseHeaders,
+			// Loop variable
+			i,
 
 			// Create the final options object
 			s = jQuery.ajaxSetup( {}, options ),
@@ -525,12 +518,11 @@ jQuery.extend( {
 		jqXHR.error = jqXHR.fail;
 
 		// Remove hash character (#7531: and string promotion)
-		// Add protocol if not provided (#5866: IE7 issue with protocol-less urls)
+		// Add protocol if not provided (prefilters might expect it)
 		// Handle falsy url in the settings object (#10093: consistency with old signature)
 		// We also use the url parameter if available
-		s.url = ( ( url || s.url || ajaxLocation ) + "" )
-			.replace( rhash, "" )
-			.replace( rprotocol, ajaxLocParts[ 1 ] + "//" );
+		s.url = ( ( url || s.url || location.href ) + "" ).replace( rhash, "" )
+			.replace( rprotocol, location.protocol + "//" );
 
 		// Alias method option to type as per ticket #12004
 		s.type = options.method || options.type || s.method || s.type;
@@ -538,14 +530,26 @@ jQuery.extend( {
 		// Extract dataTypes list
 		s.dataTypes = jQuery.trim( s.dataType || "*" ).toLowerCase().match( rnotwhite ) || [ "" ];
 
-		// A cross-domain request is in order when we have a protocol:host:port mismatch
+		// A cross-domain request is in order when the origin doesn't match the current origin.
 		if ( s.crossDomain == null ) {
-			parts = rurl.exec( s.url.toLowerCase() );
-			s.crossDomain = !!( parts &&
-				( parts[ 1 ] !== ajaxLocParts[ 1 ] || parts[ 2 ] !== ajaxLocParts[ 2 ] ||
-					( parts[ 3 ] || ( parts[ 1 ] === "http:" ? "80" : "443" ) ) !==
-						( ajaxLocParts[ 3 ] || ( ajaxLocParts[ 1 ] === "http:" ? "80" : "443" ) ) )
-			);
+			urlAnchor = document.createElement( "a" );
+
+			// Support: IE8-11+
+			// IE throws exception if url is malformed, e.g. http://example.com:80x/
+			try {
+				urlAnchor.href = s.url;
+
+				// Support: IE8-11+
+				// Anchor's host property isn't correctly set when s.url is relative
+				urlAnchor.href = urlAnchor.href;
+				s.crossDomain = originAnchor.protocol + "//" + originAnchor.host !==
+					urlAnchor.protocol + "//" + urlAnchor.host;
+			} catch ( e ) {
+
+				// If there is an error parsing the URL, assume it is crossDomain,
+				// it can be rejected by the transport if it is invalid
+				s.crossDomain = true;
+			}
 		}
 
 		// Convert data if not already a string
@@ -640,7 +644,7 @@ jQuery.extend( {
 			return jqXHR.abort();
 		}
 
-		// aborting is no longer a cancellation
+		// Aborting is no longer a cancellation
 		strAbort = "abort";
 
 		// Install callbacks on deferreds
@@ -761,8 +765,7 @@ jQuery.extend( {
 				}
 			} else {
 
-				// We extract error from statusText
-				// then normalize statusText and status for non-aborts
+				// Extract error from statusText and normalize for non-aborts
 				error = statusText;
 				if ( status || !statusText ) {
 					statusText = "error";
@@ -820,7 +823,7 @@ jQuery.extend( {
 jQuery.each( [ "get", "post" ], function( i, method ) {
 	jQuery[ method ] = function( url, data, callback, type ) {
 
-		// shift arguments if data argument was omitted
+		// Shift arguments if data argument was omitted
 		if ( jQuery.isFunction( data ) ) {
 			type = type || callback;
 			callback = data;

src/ajax/jsonp.js

@@ -53,7 +53,7 @@ jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) {
 			return responseContainer[ 0 ];
 		};
 
-		// force json dataType
+		// Force json dataType
 		s.dataTypes[ 0 ] = "json";
 
 		// Install callback
@@ -77,10 +77,10 @@ jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) {
 			// Save back as free
 			if ( s[ callbackName ] ) {
 
-				// make sure that re-using the options doesn't screw things around
+				// Make sure that re-using the options doesn't screw things around
 				s.jsonpCallback = originalSettings.jsonpCallback;
 
-				// save the callback name for future use
+				// Save the callback name for future use
 				oldCallbacks.push( callbackName );
 			}
 

src/ajax/load.js

@@ -26,7 +26,7 @@ jQuery.fn.load = function( url, params, callback ) {
 		off = url.indexOf( " " );
 
 	if ( off > -1 ) {
-		selector = jQuery.trim( url.slice( off, url.length ) );
+		selector = jQuery.trim( url.slice( off ) );
 		url = url.slice( 0, off );
 	}
 

src/ajax/parseJSON.js

@@ -2,50 +2,10 @@ define( [
 	"../core"
 ], function( jQuery ) {
 
-var rvalidtokens = /(,)|(\[|{)|(}|])|"(?:[^"\\\r\n]|\\["\\\/bfnrt]|\\u[\da-fA-F]{4})*"\s*:?|true|false|null|-?(?!0\d)\d+(?:\.\d+|)(?:[eE][+-]?\d+|)/g;
-
+// Support: Android 2.3
+// Workaround failure to string-cast null input
 jQuery.parseJSON = function( data ) {
-
-	// Attempt to parse using the native JSON parser first
-	if ( window.JSON && window.JSON.parse ) {
-
-		// Support: Android 2.3
-		// Workaround failure to string-cast null input
-		return window.JSON.parse( data + "" );
-	}
-
-	var requireNonComma,
-		depth = null,
-		str = jQuery.trim( data + "" );
-
-	// Guard against invalid (and possibly dangerous) input by ensuring that nothing remains
-	// after removing valid tokens
-	return str && !jQuery.trim( str.replace( rvalidtokens, function( token, comma, open, close ) {
-
-		// Force termination if we see a misplaced comma
-		if ( requireNonComma && comma ) {
-			depth = 0;
-		}
-
-		// Perform no more replacements after returning to outermost depth
-		if ( depth === 0 ) {
-			return token;
-		}
-
-		// Commas must not follow "[", "{", or ","
-		requireNonComma = open || comma;
-
-		// Determine new depth
-		// array/object open ("[" or "{"): depth += true - false (increment)
-		// array/object close ("]" or "}"): depth += false - true (decrement)
-		// other cases ("," or primitive): depth += true - true (numeric cast)
-		depth += !close - !open;
-
-		// Remove this token
-		return "";
-	} ) ) ?
-		( Function( "return " + str ) )() :
-		jQuery.error( "Invalid JSON: " + data );
+	return JSON.parse( data + "" );
 };
 
 return jQuery.parseJSON;

src/ajax/parseXML.js

@@ -4,23 +4,19 @@ define( [
 
 // Cross-browser xml parsing
 jQuery.parseXML = function( data ) {
-	var xml, tmp;
+	var xml;
 	if ( !data || typeof data !== "string" ) {
 		return null;
 	}
+
+	// Support: IE9
 	try {
-		if ( window.DOMParser ) { // Standard
-			tmp = new window.DOMParser();
-			xml = tmp.parseFromString( data, "text/xml" );
-		} else { // IE
-			xml = new window.ActiveXObject( "Microsoft.XMLDOM" );
-			xml.async = "false";
-			xml.loadXML( data );
-		}
+		xml = ( new window.DOMParser() ).parseFromString( data, "text/xml" );
 	} catch ( e ) {
 		xml = undefined;
 	}
-	if ( !xml || !xml.documentElement || xml.getElementsByTagName( "parsererror" ).length ) {
+
+	if ( !xml || xml.getElementsByTagName( "parsererror" ).length ) {
 		jQuery.error( "Invalid XML: " + data );
 	}
 	return xml;

src/ajax/script.js

@@ -21,14 +21,13 @@ jQuery.ajaxSetup( {
 	}
 } );
 
-// Handle cache's special case and global
+// Handle cache's special case and crossDomain
 jQuery.ajaxPrefilter( "script", function( s ) {
 	if ( s.cache === undefined ) {
 		s.cache = false;
 	}
 	if ( s.crossDomain ) {
 		s.type = "GET";
-		s.global = false;
 	}
 } );
 
@@ -37,55 +36,29 @@ jQuery.ajaxTransport( "script", function( s ) {
 
 	// This transport only deals with cross domain requests
 	if ( s.crossDomain ) {
-
-		var script,
-			head = document.head || jQuery( "head" )[ 0 ] || document.documentElement;
-
+		var script, callback;
 		return {
-
-			send: function( _, callback ) {
-
-				script = document.createElement( "script" );
-
-				script.async = true;
-
-				if ( s.scriptCharset ) {
-					script.charset = s.scriptCharset;
-				}
-
-				script.src = s.url;
-
-				// Attach handlers for all browsers
-				script.onload = script.onreadystatechange = function( _, isAbort ) {
-
-					if ( isAbort || !script.readyState || /loaded|complete/.test( script.readyState ) ) {
-
-						// Handle memory leak in IE
-						script.onload = script.onreadystatechange = null;
-
-						// Remove the script
-						if ( script.parentNode ) {
-							script.parentNode.removeChild( script );
-						}
-
-						// Dereference the script
-						script = null;
-
-						// Callback if not abort
-						if ( !isAbort ) {
-							callback( 200, "success" );
+			send: function( _, complete ) {
+				script = jQuery( "<script>" ).prop( {
+					charset: s.scriptCharset,
+					src: s.url
+				} ).on(
+					"load error",
+					callback = function( evt ) {
+						script.remove();
+						callback = null;
+						if ( evt ) {
+							complete( evt.type === "error" ? 404 : 200, evt.type );
 						}
 					}
-				};
+				);
 
-				// Circumvent IE6 bugs with base elements (#2709 and #4378) by prepending
 				// Use native DOM manipulation to avoid our domManip AJAX trickery
-				head.insertBefore( script, head.firstChild );
+				document.head.appendChild( script[ 0 ] );
 			},
-
 			abort: function() {
-				if ( script ) {
-					script.onload( undefined, true );
+				if ( callback ) {
+					callback();
 				}
 			}
 		};

src/ajax/xhr.js

 define( [
 	"../core",
-	"../var/document",
 	"../var/support",
 	"../ajax"
-], function( jQuery, document, support ) {
-
-// Create the request object
-// (This is still attached to ajaxSettings for backward compatibility)
-jQuery.ajaxSettings.xhr = window.ActiveXObject !== undefined ?
-
-	// Support: IE6-IE8
-	function() {
-
-		// XHR cannot access local files, always use ActiveX for that case
-		if ( this.isLocal ) {
-			return createActiveXHR();
-		}
-
-		// Support: IE 9-11
-		// IE seems to error on cross-domain PATCH requests when ActiveX XHR
-		// is used. In IE 9+ always use the native XHR.
-		// Note: this condition won't catch Edge as it doesn't define
-		// document.documentMode but it also doesn't support ActiveX so it won't
-		// reach this code.
-		if ( document.documentMode > 8 ) {
-			return createStandardXHR();
-		}
-
-		// Support: IE<9
-		// oldIE XHR does not support non-RFC2616 methods (#13240)
-		// See http://msdn.microsoft.com/en-us/library/ie/ms536648(v=vs.85).aspx
-		// and http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9
-		// Although this check for six methods instead of eight
-		// since IE also does not support "trace" and "connect"
-		return /^(get|post|head|put|delete|options)$/i.test( this.type ) &&
-			createStandardXHR() || createActiveXHR();
-	} :
-
-	// For all other browsers, use the standard XMLHttpRequest object
-	createStandardXHR;
-
-var xhrId = 0,
-	xhrCallbacks = {},
-	xhrSupported = jQuery.ajaxSettings.xhr();
-
-// Support: IE<10
-// Open requests must be manually aborted on unload (#5280)
-// See https://support.microsoft.com/kb/2856746 for more info
-if ( window.attachEvent ) {
-	window.attachEvent( "onunload", function() {
-		for ( var key in xhrCallbacks ) {
-			xhrCallbacks[ key ]( undefined, true );
-		}
-	} );
-}
-
-// Determine support properties
-support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported );
-xhrSupported = support.ajax = !!xhrSupported;
-
-// Create transport if the browser can provide an xhr
-if ( xhrSupported ) {
-
-	jQuery.ajaxTransport( function( options ) {
-
-		// Cross domain only allowed if supported through XMLHttpRequest
-		if ( !options.crossDomain || support.cors ) {
+], function( jQuery, support ) {
 
-			var callback;
-
-			return {
-				send: function( headers, complete ) {
-					var i,
-						xhr = options.xhr(),
-						id = ++xhrId;
+jQuery.ajaxSettings.xhr = function() {
+	try {
+		return new window.XMLHttpRequest();
+	} catch ( e ) {}
+};
 
-					// Open the socket
-					xhr.open(
-						options.type,
-						options.url,
-						options.async,
-						options.username,
-						options.password
-					);
+var xhrSuccessStatus = {
 
-					// Apply custom fields if provided
-					if ( options.xhrFields ) {
-						for ( i in options.xhrFields ) {
-							xhr[ i ] = options.xhrFields[ i ];
-						}
-					}
+		// File protocol always yields status code 0, assume 200
+		0: 200,
 
-					// Override mime type if needed
-					if ( options.mimeType && xhr.overrideMimeType ) {
-						xhr.overrideMimeType( options.mimeType );
-					}
-
-					// X-Requested-With header
-					// For cross-domain requests, seeing as conditions for a preflight are
-					// akin to a jigsaw puzzle, we simply never set it to be sure.
-					// (it can always be set on a per-request basis or even using ajaxSetup)
-					// For same-domain requests, won't change header if already provided.
-					if ( !options.crossDomain && !headers[ "X-Requested-With" ] ) {
-						headers[ "X-Requested-With" ] = "XMLHttpRequest";
-					}
+		// Support: IE9
+		// #1450: sometimes IE returns 1223 when it should be 204
+		1223: 204
+	},
+	xhrSupported = jQuery.ajaxSettings.xhr();
 
-					// Set headers
-					for ( i in headers ) {
-
-						// Support: IE<9
-						// IE's ActiveXObject throws a 'Type Mismatch' exception when setting
-						// request header to a null-value.
-						//
-						// To keep consistent with other XHR implementations, cast the value
-						// to string and ignore `undefined`.
-						if ( headers[ i ] !== undefined ) {
-							xhr.setRequestHeader( i, headers[ i ] + "" );
-						}
+support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported );
+support.ajax = xhrSupported = !!xhrSupported;
+
+jQuery.ajaxTransport( function( options ) {
+	var callback, errorCallback;
+
+	// Cross domain only allowed if supported through XMLHttpRequest
+	if ( support.cors || xhrSupported && !options.crossDomain ) {
+		return {
+			send: function( headers, complete ) {
+				var i,
+					xhr = options.xhr();
+
+				xhr.open(
+					options.type,
+					options.url,
+					options.async,
+					options.username,
+					options.password
+				);
+
+				// Apply custom fields if provided
+				if ( options.xhrFields ) {
+					for ( i in options.xhrFields ) {
+						xhr[ i ] = options.xhrFields[ i ];
 					}
+				}
 
-					// Do send the request
-					// This may raise an exception which is actually
-					// handled in jQuery.ajax (so no try/catch here)
-					xhr.send( ( options.hasContent && options.data ) || null );
-
-					// Listener
-					callback = function( _, isAbort ) {
-						var status, statusText, responses;
+				// Override mime type if needed
+				if ( options.mimeType && xhr.overrideMimeType ) {
+					xhr.overrideMimeType( options.mimeType );
+				}
 
-						// Was never called and is aborted or complete
-						if ( callback && ( isAbort || xhr.readyState === 4 ) ) {
+				// X-Requested-With header
+				// For cross-domain requests, seeing as conditions for a preflight are
+				// akin to a jigsaw puzzle, we simply never set it to be sure.
+				// (it can always be set on a per-request basis or even using ajaxSetup)
+				// For same-domain requests, won't change header if already provided.
+				if ( !options.crossDomain && !headers[ "X-Requested-With" ] ) {
+					headers[ "X-Requested-With" ] = "XMLHttpRequest";
+				}
 
-							// Clean up
-							delete xhrCallbacks[ id ];
-							callback = undefined;
-							xhr.onreadystatechange = jQuery.noop;
+				// Set headers
+				for ( i in headers ) {
+					xhr.setRequestHeader( i, headers[ i ] );
+				}
 
-							// Abort manually if needed
-							if ( isAbort ) {
-								if ( xhr.readyState !== 4 ) {
-									xhr.abort();
+				// Callback
+				callback = function( type ) {
+					return function() {
+						if ( callback ) {
+							callback = errorCallback = xhr.onload =
+								xhr.onerror = xhr.onabort = xhr.onreadystatechange = null;
+
+							if ( type === "abort" ) {
+								xhr.abort();
+							} else if ( type === "error" ) {
+
+								// Support: IE9
+								// On a manual native abort, IE9 throws
+								// errors on any property access that is not readyState
+								if ( typeof xhr.status !== "number" ) {
+									complete( 0, "error" );
+								} else {
+									complete(
+
+										// File: protocol always yields status 0; see #8605, #14207
+										xhr.status,
+										xhr.statusText
+									);
 								}
 							} else {
-								responses = {};
-								status = xhr.status;
-
-								// Support: IE<10
-								// Accessing binary-data responseText throws an exception
-								// (#11426)
-								if ( typeof xhr.responseText === "string" ) {
-									responses.text = xhr.responseText;
-								}
-
-								// Firefox throws an exception when accessing
-								// statusText for faulty cross-domain requests
-								try {
-									statusText = xhr.statusText;
-								} catch ( e ) {
-
-									// We normalize with Webkit giving an empty statusText
-									statusText = "";
-								}
-
-								// Filter status for non standard behaviors
-
-								// If the request is local and we have data: assume a success
-								// (success with no data won't get notified, that's the best we
-								// can do given current implementations)
-								if ( !status && options.isLocal && !options.crossDomain ) {
-									status = responses.text ? 200 : 404;
-
-								// IE - #1450: sometimes returns 1223 when it should be 204
-								} else if ( status === 1223 ) {
-									status = 204;
-								}
+								complete(
+									xhrSuccessStatus[ xhr.status ] || xhr.status,
+									xhr.statusText,
+
+									// Support: IE9 only
+									// IE9 has no XHR2 but throws on binary (trac-11426)
+									// For XHR2 non-text, let the caller handle it (gh-2498)
+									( xhr.responseType || "text" ) !== "text"  ||
+									typeof xhr.responseText !== "string" ?
+										{ binary: xhr.response } :
+										{ text: xhr.responseText },
+									xhr.getAllResponseHeaders()
+								);
 							}
 						}
-
-						// Call complete if needed
-						if ( responses ) {
-							complete( status, statusText, responses, xhr.getAllResponseHeaders() );
+					};
+				};
+
+				// Listen to events
+				xhr.onload = callback();
+				errorCallback = xhr.onerror = callback( "error" );
+
+				// Support: IE9
+				// Use onreadystatechange to replace onabort
+				// to handle uncaught aborts
+				if ( xhr.onabort !== undefined ) {
+					xhr.onabort = errorCallback;
+				} else {
+					xhr.onreadystatechange = function() {
+
+						// Check readyState before timeout as it changes
+						if ( xhr.readyState === 4 ) {
+
+							// Allow onerror to be called first,
+							// but that will not handle a native abort
+							// Also, save errorCallback to a variable
+							// as xhr.onerror cannot be accessed
+							window.setTimeout( function() {
+								if ( callback ) {
+									errorCallback();
+								}
+							} );
 						}
 					};
+				}
 
-					// Do send the request
-					// `xhr.send` may raise an exception, but it will be
-					// handled in jQuery.ajax (so no try/catch here)
-					if ( !options.async ) {
-
-						// If we're in sync mode we fire the callback
-						callback();
-					} else if ( xhr.readyState === 4 ) {
+				// Create the abort callback
+				callback = callback( "abort" );
 
-						// (IE6 & IE7) if it's in cache and has been
-						// retrieved directly we need to fire the callback
-						window.setTimeout( callback );
-					} else {
+				try {
 
-						// Register the callback, but delay it in case `xhr.send` throws
-						// Add to the list of active xhr callbacks
-						xhr.onreadystatechange = xhrCallbacks[ id ] = callback;
-					}
-				},
+					// Do send the request (this may raise an exception)
+					xhr.send( options.hasContent && options.data || null );
+				} catch ( e ) {
 
-				abort: function() {
+					// #14683: Only rethrow if this hasn't been notified as an error yet
 					if ( callback ) {
-						callback( undefined, true );
+						throw e;
 					}
 				}
-			};
-		}
-	} );
-}
+			},
 
-// Functions to create xhrs
-function createStandardXHR() {
-	try {
-		return new window.XMLHttpRequest();
-	} catch ( e ) {}
-}
-
-function createActiveXHR() {
-	try {
-		return new window.ActiveXObject( "Microsoft.XMLHTTP" );
-	} catch ( e ) {}
-}
+			abort: function() {
+				if ( callback ) {
+					callback();
+				}
+			}
+		};
+	}
+} );
 
 } );

src/attributes.js

 define( [
 	"./core",
-	"./attributes/val",
 	"./attributes/attr",
 	"./attributes/prop",
-	"./attributes/classes"
+	"./attributes/classes",
+	"./attributes/val"
 ], function( jQuery ) {
 
 // Return jQuery for attributes-only inclusion

src/attributes/attr.js

@@ -3,15 +3,11 @@ define( [
 	"../core/access",
 	"./support",
 	"../var/rnotwhite",
-	"./val",
 	"../selector"
 ], function( jQuery, access, support, rnotwhite ) {
 
-var nodeHook, boolHook,
-	attrHandle = jQuery.expr.attrHandle,
-	ruseDefault = /^(?:checked|selected)$/i,
-	getSetAttribute = support.getSetAttribute,
-	getSetInput = support.input;
+var boolHook,
+	attrHandle = jQuery.expr.attrHandle;
 
 jQuery.fn.extend( {
 	attr: function( name, value ) {
@@ -45,7 +41,7 @@ jQuery.extend( {
 		if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {
 			name = name.toLowerCase();
 			hooks = jQuery.attrHooks[ name ] ||
-				( jQuery.expr.match.bool.test( name ) ? boolHook : nodeHook );
+				( jQuery.expr.match.bool.test( name ) ? boolHook : undefined );
 		}
 
 		if ( value !== undefined ) {
@@ -78,9 +74,6 @@ jQuery.extend( {
 			set: function( elem, value ) {
 				if ( !support.radioValue && value === "radio" &&
 					jQuery.nodeName( elem, "input" ) ) {
-
-					// Setting the type on a radio button after the value resets the value in IE8-9
-					// Reset value to default in case type is set after value during creation
 					var val = elem.value;
 					elem.setAttribute( "type", value );
 					if ( val ) {
@@ -105,22 +98,10 @@ jQuery.extend( {
 				if ( jQuery.expr.match.bool.test( name ) ) {
 
 					// Set corresponding property to false
-					if ( getSetInput && getSetAttribute || !ruseDefault.test( name ) ) {
-						elem[ propName ] = false;
-
-					// Support: IE<9
-					// Also clear defaultChecked/defaultSelected (if appropriate)
-					} else {
-						elem[ jQuery.camelCase( "default-" + name ) ] =
-							elem[ propName ] = false;
-					}
-
-				// See #9699 for explanation of this approach (setting first, then removal)
-				} else {
-					jQuery.attr( elem, name, "" );
+					elem[ propName ] = false;
 				}
 
-				elem.removeAttribute( getSetAttribute ? name : propName );
+				elem.removeAttribute( name );
 			}
 		}
 	}
@@ -133,149 +114,29 @@ boolHook = {
 
 			// Remove boolean attributes when set to false
 			jQuery.removeAttr( elem, name );
-		} else if ( getSetInput && getSetAttribute || !ruseDefault.test( name ) ) {
-
-			// IE<8 needs the *property* name
-			elem.setAttribute( !getSetAttribute && jQuery.propFix[ name ] || name, name );
-
 		} else {
-
-			// Support: IE<9
-			// Use defaultChecked and defaultSelected for oldIE
-			elem[ jQuery.camelCase( "default-" + name ) ] = elem[ name ] = true;
+			elem.setAttribute( name, name );
 		}
 		return name;
 	}
 };
-
 jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( i, name ) {
 	var getter = attrHandle[ name ] || jQuery.find.attr;
 
-	if ( getSetInput && getSetAttribute || !ruseDefault.test( name ) ) {
-		attrHandle[ name ] = function( elem, name, isXML ) {
-			var ret, handle;
-			if ( !isXML ) {
-
-				// Avoid an infinite loop by temporarily removing this function from the getter
-				handle = attrHandle[ name ];
-				attrHandle[ name ] = ret;
-				ret = getter( elem, name, isXML ) != null ?
-					name.toLowerCase() :
-					null;
-				attrHandle[ name ] = handle;
-			}
-			return ret;
-		};
-	} else {
-		attrHandle[ name ] = function( elem, name, isXML ) {
-			if ( !isXML ) {
-				return elem[ jQuery.camelCase( "default-" + name ) ] ?
-					name.toLowerCase() :
-					null;
-			}
-		};
-	}
-} );
-
-// fix oldIE attroperties
-if ( !getSetInput || !getSetAttribute ) {
-	jQuery.attrHooks.value = {
-		set: function( elem, value, name ) {
-			if ( jQuery.nodeName( elem, "input" ) ) {
-
-				// Does not return so that setAttribute is also used
-				elem.defaultValue = value;
-			} else {
-
-				// Use nodeHook if defined (#1954); otherwise setAttribute is fine
-				return nodeHook && nodeHook.set( elem, value, name );
-			}
+	attrHandle[ name ] = function( elem, name, isXML ) {
+		var ret, handle;
+		if ( !isXML ) {
+
+			// Avoid an infinite loop by temporarily removing this function from the getter
+			handle = attrHandle[ name ];
+			attrHandle[ name ] = ret;
+			ret = getter( elem, name, isXML ) != null ?
+				name.toLowerCase() :
+				null;
+			attrHandle[ name ] = handle;
 		}
+		return ret;
 	};
-}
-
-// IE6/7 do not support getting/setting some attributes with get/setAttribute
-if ( !getSetAttribute ) {
-
-	// Use this for any attribute in IE6/7
-	// This fixes almost every IE6/7 issue
-	nodeHook = {
-		set: function( elem, value, name ) {
-
-			// Set the existing or create a new attribute node
-			var ret = elem.getAttributeNode( name );
-			if ( !ret ) {
-				elem.setAttributeNode(
-					( ret = elem.ownerDocument.createAttribute( name ) )
-				);
-			}
-
-			ret.value = value += "";
-
-			// Break association with cloned elements by also using setAttribute (#9646)
-			if ( name === "value" || value === elem.getAttribute( name ) ) {
-				return value;
-			}
-		}
-	};
-
-	// Some attributes are constructed with empty-string values when not defined
-	attrHandle.id = attrHandle.name = attrHandle.coords =
-		function( elem, name, isXML ) {
-			var ret;
-			if ( !isXML ) {
-				return ( ret = elem.getAttributeNode( name ) ) && ret.value !== "" ?
-					ret.value :
-					null;
-			}
-		};
-
-	// Fixing value retrieval on a button requires this module
-	jQuery.valHooks.button = {
-		get: function( elem, name ) {
-			var ret = elem.getAttributeNode( name );
-			if ( ret && ret.specified ) {
-				return ret.value;
-			}
-		},
-		set: nodeHook.set
-	};
-
-	// Set contenteditable to false on removals(#10429)
-	// Setting to empty string throws an error as an invalid value
-	jQuery.attrHooks.contenteditable = {
-		set: function( elem, value, name ) {
-			nodeHook.set( elem, value === "" ? false : value, name );
-		}
-	};
-
-	// Set width and height to auto instead of 0 on empty string( Bug #8150 )
-	// This is for removals
-	jQuery.each( [ "width", "height" ], function( i, name ) {
-		jQuery.attrHooks[ name ] = {
-			set: function( elem, value ) {
-				if ( value === "" ) {
-					elem.setAttribute( name, "auto" );
-					return value;
-				}
-			}
-		};
-	} );
-}
-
-if ( !support.style ) {
-	jQuery.attrHooks.style = {
-		get: function( elem ) {
-
-			// Return undefined in the case of empty string
-			// Note: IE uppercases css property names, but if we were to .toLowerCase()
-			// .cssText, that would destroy case sensitivity in URL's, like in "background"
-			return elem.style.cssText || undefined;
-		},
-		set: function( elem, value ) {
-			return ( elem.style.cssText = value + "" );
-		}
-	};
-}
+} );
 
 } );

src/attributes/classes.js

 define( [
 	"../core",
 	"../var/rnotwhite",
+	"../data/var/dataPriv",
 	"../core/init"
-], function( jQuery, rnotwhite ) {
+], function( jQuery, rnotwhite, dataPriv ) {
 
 var rclass = /[\t\r\n\f]/g;
 
 function getClass( elem ) {
-	return jQuery.attr( elem, "class" ) || "";
+	return elem.getAttribute && elem.getAttribute( "class" ) || "";
 }
 
 jQuery.fn.extend( {
@@ -37,10 +38,10 @@ jQuery.fn.extend( {
 						}
 					}
 
-					// only assign if different to avoid unneeded rendering.
+					// Only assign if different to avoid unneeded rendering.
 					finalValue = jQuery.trim( cur );
 					if ( curValue !== finalValue ) {
-						jQuery.attr( elem, "class", finalValue );
+						elem.setAttribute( "class", finalValue );
 					}
 				}
 			}
@@ -86,7 +87,7 @@ jQuery.fn.extend( {
 					// Only assign if different to avoid unneeded rendering.
 					finalValue = jQuery.trim( cur );
 					if ( curValue !== finalValue ) {
-						jQuery.attr( elem, "class", finalValue );
+						elem.setAttribute( "class", finalValue );
 					}
 				}
 			}
@@ -136,19 +137,21 @@ jQuery.fn.extend( {
 				className = getClass( this );
 				if ( className ) {
 
-					// store className if set
-					jQuery._data( this, "__className__", className );
+					// Store className if set
+					dataPriv.set( this, "__className__", className );
 				}
 
-				// If the element has a class name or if we're passed "false",
+				// If the element has a class name or if we're passed `false`,
 				// then remove the whole classname (if there was one, the above saved it).
 				// Otherwise bring back whatever was previously saved (if anything),
 				// falling back to the empty string if nothing was stored.
-				jQuery.attr( this, "class",
-					className || value === false ?
-					"" :
-					jQuery._data( this, "__className__" ) || ""
-				);
+				if ( this.setAttribute ) {
+					this.setAttribute( "class",
+						className || value === false ?
+						"" :
+						dataPriv.get( this, "__className__" ) || ""
+					);
+				}
 			}
 		} );
 	},

src/attributes/prop.js

@@ -5,7 +5,7 @@ define( [
 	"../selector"
 ], function( jQuery, access, support ) {
 
-var rfocusable = /^(?:input|select|textarea|button|object)$/i,
+var rfocusable = /^(?:input|select|textarea|button)$/i,
 	rclickable = /^(?:a|area)$/i;
 
 jQuery.fn.extend( {
@@ -14,14 +14,8 @@ jQuery.fn.extend( {
 	},
 
 	removeProp: function( name ) {
-		name = jQuery.propFix[ name ] || name;
 		return this.each( function() {
-
-			// try/catch handles cases where IE balks (such as removing a property on window)
-			try {
-				this[ name ] = undefined;
-				delete this[ name ];
-			} catch ( e ) {}
+			delete this[ jQuery.propFix[ name ] || name ];
 		} );
 	}
 } );
@@ -85,21 +79,7 @@ jQuery.extend( {
 	}
 } );
 
-// Some attributes require a special call on IE
-// http://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx
-if ( !support.hrefNormalized ) {
-
-	// href/src property should get the full normalized URL (#10299/#12915)
-	jQuery.each( [ "href", "src" ], function( i, name ) {
-		jQuery.propHooks[ name ] = {
-			get: function( elem ) {
-				return elem.getAttribute( name, 4 );
-			}
-		};
-	} );
-}
-
-// Support: Safari, IE9+
+// Support: IE <=11 only
 // Accessing the selectedIndex property
 // forces the browser to respect setting selected
 // on the option
@@ -109,14 +89,8 @@ if ( !support.optSelected ) {
 	jQuery.propHooks.selected = {
 		get: function( elem ) {
 			var parent = elem.parentNode;
-
-			if ( parent ) {
-				parent.selectedIndex;
-
-				// Make sure that it also works with optgroups, see #5701
-				if ( parent.parentNode ) {
-					parent.parentNode.selectedIndex;
-				}
+			if ( parent && parent.parentNode ) {
+				parent.parentNode.selectedIndex;
 			}
 			return null;
 		},
@@ -148,9 +122,4 @@ jQuery.each( [
 	jQuery.propFix[ this.toLowerCase() ] = this;
 } );
 
-// IE6/7 call enctype encoding
-if ( !support.enctype ) {
-	jQuery.propFix.enctype = "encoding";
-}
-
 } );

src/attributes/support.js

@@ -4,64 +4,30 @@ define( [
 ], function( document, support ) {
 
 ( function() {
-	var a,
-		input = document.createElement( "input" ),
-		div = document.createElement( "div" ),
+	var input = document.createElement( "input" ),
 		select = document.createElement( "select" ),
 		opt = select.appendChild( document.createElement( "option" ) );
 
-	// Setup
-	div = document.createElement( "div" );
-	div.setAttribute( "className", "t" );
-	div.innerHTML = "  <link/><table></table><a href='/a'>a</a><input type='checkbox'/>";
-	a = div.getElementsByTagName( "a" )[ 0 ];
+	input.type = "checkbox";
 
-	// Support: Windows Web Apps (WWA)
-	// `type` must use .setAttribute for WWA (#14901)
-	input.setAttribute( "type", "checkbox" );
-	div.appendChild( input );
+	// Support: iOS<=5.1, Android<=4.2+
+	// Default value for a checkbox should be "on"
+	support.checkOn = input.value !== "";
 
-	a = div.getElementsByTagName( "a" )[ 0 ];
-
-	// First batch of tests.
-	a.style.cssText = "top:1px";
-
-	// Test setAttribute on camelCase class.
-	// If it works, we need attrFixes when doing get/setAttribute (ie6/7)
-	support.getSetAttribute = div.className !== "t";
-
-	// Get the style information from getAttribute
-	// (IE uses .cssText instead)
-	support.style = /top/.test( a.getAttribute( "style" ) );
-
-	// Make sure that URLs aren't manipulated
-	// (IE normalizes it by default)
-	support.hrefNormalized = a.getAttribute( "href" ) === "/a";
-
-	// Check the default checkbox/radio value ("" on WebKit; "on" elsewhere)
-	support.checkOn = !!input.value;
-
-	// Make sure that a selected-by-default option has a working selected property.
-	// (WebKit defaults to false instead of true, IE too, if it's in an optgroup)
+	// Support: IE<=11+
+	// Must access selectedIndex to make default options select
 	support.optSelected = opt.selected;
 
-	// Tests for enctype support on a form (#6743)
-	support.enctype = !!document.createElement( "form" ).enctype;
-
-	// Make sure that the options inside disabled selects aren't marked as disabled
-	// (WebKit marks them as disabled)
+	// Support: Android<=2.3
+	// Options inside disabled selects are incorrectly marked as disabled
 	select.disabled = true;
 	support.optDisabled = !opt.disabled;
 
-	// Support: IE8 only
-	// Check if we can trust getAttribute("value")
+	// Support: IE<=11+
+	// An input loses its value after becoming a radio
 	input = document.createElement( "input" );
-	input.setAttribute( "value", "" );
-	support.input = input.getAttribute( "value" ) === "";
-
-	// Check if an input maintains its value after becoming a radio
 	input.value = "t";
-	input.setAttribute( "type", "radio" );
+	input.type = "radio";
 	support.radioValue = input.value === "t";
 } )();
 

src/attributes/val.js

@@ -17,8 +17,7 @@ jQuery.fn.extend( {
 				hooks = jQuery.valHooks[ elem.type ] ||
 					jQuery.valHooks[ elem.nodeName.toLowerCase() ];
 
-				if (
-					hooks &&
+				if ( hooks &&
 					"get" in hooks &&
 					( ret = hooks.get( elem, "value" ) ) !== undefined
 				) {
@@ -29,10 +28,10 @@ jQuery.fn.extend( {
 
 				return typeof ret === "string" ?
 
-					// handle most common string cases
+					// Handle most common string cases
 					ret.replace( rreturn, "" ) :
 
-					// handle cases where value is null/undef or number
+					// Handle cases where value is null/undef or number
 					ret == null ? "" : ret;
 			}
 
@@ -57,8 +56,10 @@ jQuery.fn.extend( {
 			// Treat null/undefined as ""; convert numbers to string
 			if ( val == null ) {
 				val = "";
+
 			} else if ( typeof val === "number" ) {
 				val += "";
+
 			} else if ( jQuery.isArray( val ) ) {
 				val = jQuery.map( val, function( value ) {
 					return value == null ? "" : value + "";
@@ -79,6 +80,7 @@ jQuery.extend( {
 	valHooks: {
 		option: {
 			get: function( elem ) {
+
 				var val = jQuery.find.attr( elem, "value" );
 				return val != null ?
 					val :
@@ -106,13 +108,12 @@ jQuery.extend( {
 				for ( ; i < max; i++ ) {
 					option = options[ i ];
 
-					// oldIE doesn't update selected after form reset (#2551)
+					// IE8-9 doesn't update selected after form reset (#2551)
 					if ( ( option.selected || i === index ) &&
 
 							// Don't return options that are disabled or in a disabled optgroup
 							( support.optDisabled ?
-								!option.disabled :
-								option.getAttribute( "disabled" ) === null ) &&
+								!option.disabled : option.getAttribute( "disabled" ) === null ) &&
 							( !option.parentNode.disabled ||
 								!jQuery.nodeName( option.parentNode, "optgroup" ) ) ) {
 
@@ -140,24 +141,10 @@ jQuery.extend( {
 
 				while ( i-- ) {
 					option = options[ i ];
-
-					if ( jQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1 ) {
-
-						// Support: IE6
-						// When new option element is added to select box we need to
-						// force reflow of newly added node in order to workaround delay
-						// of initialization properties
-						try {
-							option.selected = optionSet = true;
-
-						} catch ( _ ) {
-
-							// Will be executed only in IE6
-							option.scrollHeight;
-						}
-
-					} else {
-						option.selected = false;
+					if ( option.selected =
+						jQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1
+					) {
+						optionSet = true;
 					}
 				}
 
@@ -165,8 +152,7 @@ jQuery.extend( {
 				if ( !optionSet ) {
 					elem.selectedIndex = -1;
 				}
-
-				return options;
+				return values;
 			}
 		}
 	}

src/callbacks.js

@@ -190,9 +190,9 @@ jQuery.Callbacks = function( options ) {
 			// Also disable .add unless we have memory (since it would have no effect)
 			// Abort any pending executions
 			lock: function() {
-				locked = true;
+				locked = queue = [];
 				if ( !memory ) {
-					self.disable();
+					list = memory = "";
 				}
 				return this;
 			},

src/core.js

 define( [
-	"./var/deletedIds",
+	"./var/arr",
 	"./var/document",
 	"./var/slice",
 	"./var/concat",
@@ -9,8 +9,7 @@ define( [
 	"./var/toString",
 	"./var/hasOwn",
 	"./var/support"
-], function( deletedIds, document, slice, concat, push, indexOf,
-	class2type, toString, hasOwn, support ) {
+], function( arr, document, slice, concat, push, indexOf, class2type, toString, hasOwn, support ) {
 
 var
 	version = "@VERSION",
@@ -23,7 +22,7 @@ var
 		return new jQuery.fn.init( selector, context );
 	},
 
-	// Support: Android<4.1, IE<9
+	// Support: Android<4.1
 	// Make sure we trim BOM and NBSP
 	rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,
 
@@ -116,12 +115,12 @@ jQuery.fn = jQuery.prototype = {
 	// For internal use only.
 	// Behaves like an Array's method, not like a jQuery method.
 	push: push,
-	sort: deletedIds.sort,
-	splice: deletedIds.splice
+	sort: arr.sort,
+	splice: arr.splice
 };
 
 jQuery.extend = jQuery.fn.extend = function() {
-	var src, copyIsArray, copy, name, options, clone,
+	var options, name, src, copy, copyIsArray, clone,
 		target = arguments[ 0 ] || {},
 		i = 1,
 		length = arguments.length,
@@ -131,7 +130,7 @@ jQuery.extend = jQuery.fn.extend = function() {
 	if ( typeof target === "boolean" ) {
 		deep = target;
 
-		// skip the boolean and the target
+		// Skip the boolean and the target
 		target = arguments[ i ] || {};
 		i++;
 	}
@@ -141,7 +140,7 @@ jQuery.extend = jQuery.fn.extend = function() {
 		target = {};
 	}
 
-	// extend jQuery itself if only one argument is passed
+	// Extend jQuery itself if only one argument is passed
 	if ( i === length ) {
 		target = this;
 		i--;
@@ -203,20 +202,14 @@ jQuery.extend( {
 
 	noop: function() {},
 
-	// See test/unit/core.js for details concerning isFunction.
-	// Since version 1.3, DOM methods and functions like alert
-	// aren't supported. They return false on IE (#2968).
 	isFunction: function( obj ) {
 		return jQuery.type( obj ) === "function";
 	},
 
-	isArray: Array.isArray || function( obj ) {
-		return jQuery.type( obj ) === "array";
-	},
+	isArray: Array.isArray,
 
 	isWindow: function( obj ) {
-		/* jshint eqeqeq: false */
-		return obj != null && obj == obj.window;
+		return obj != null && obj === obj.window;
 	},
 
 	isNumeric: function( obj ) {
@@ -229,77 +222,78 @@ jQuery.extend( {
 		return !jQuery.isArray( obj ) && ( realStringObj - parseFloat( realStringObj ) + 1 ) >= 0;
 	},
 
-	isEmptyObject: function( obj ) {
-		var name;
-		for ( name in obj ) {
-			return false;
-		}
-		return true;
-	},
-
 	isPlainObject: function( obj ) {
 		var key;
 
-		// Must be an Object.
-		// Because of IE, we also have to check the presence of the constructor property.
-		// Make sure that DOM nodes and window objects don't pass through, as well
-		if ( !obj || jQuery.type( obj ) !== "object" || obj.nodeType || jQuery.isWindow( obj ) ) {
+		// Not plain objects:
+		// - Any object or value whose internal [[Class]] property is not "[object Object]"
+		// - DOM nodes
+		// - window
+		if ( jQuery.type( obj ) !== "object" || obj.nodeType || jQuery.isWindow( obj ) ) {
 			return false;
 		}
 
-		try {
-
-			// Not own constructor property must be Object
-			if ( obj.constructor &&
+		// Not own constructor property must be Object
+		if ( obj.constructor &&
 				!hasOwn.call( obj, "constructor" ) &&
-				!hasOwn.call( obj.constructor.prototype, "isPrototypeOf" ) ) {
-				return false;
-			}
-		} catch ( e ) {
-
-			// IE8,9 Will throw exceptions on certain host objects #9897
+				!hasOwn.call( obj.constructor.prototype || {}, "isPrototypeOf" ) ) {
 			return false;
 		}
 
-		// Support: IE<9
-		// Handle iteration over inherited properties before own properties.
-		if ( !support.ownFirst ) {
-			for ( key in obj ) {
-				return hasOwn.call( obj, key );
-			}
-		}
-
 		// Own properties are enumerated firstly, so to speed up,
-		// if last one is own, then all properties are own.
+		// if last one is own, then all properties are own
 		for ( key in obj ) {}
 
 		return key === undefined || hasOwn.call( obj, key );
 	},
 
+	isEmptyObject: function( obj ) {
+		var name;
+		for ( name in obj ) {
+			return false;
+		}
+		return true;
+	},
+
 	type: function( obj ) {
 		if ( obj == null ) {
 			return obj + "";
 		}
+
+		// Support: Android<4.0, iOS<6 (functionish RegExp)
 		return typeof obj === "object" || typeof obj === "function" ?
 			class2type[ toString.call( obj ) ] || "object" :
 			typeof obj;
 	},
 
-	// Workarounds based on findings by Jim Driscoll
-	// http://weblogs.java.net/blog/driscoll/archive/2009/09/08/eval-javascript-global-context
-	globalEval: function( data ) {
-		if ( data && jQuery.trim( data ) ) {
-
-			// We use execScript on Internet Explorer
-			// We use an anonymous function so that context is window
-			// rather than jQuery in Firefox
-			( window.execScript || function( data ) {
-				window[ "eval" ].call( window, data ); // jscs:ignore requireDotNotation
-			} )( data );
+	// Evaluates a script in a global context
+	globalEval: function( code ) {
+		var script,
+			indirect = eval;
+
+		code = jQuery.trim( code );
+
+		if ( code ) {
+
+			// If the code includes a valid, prologue position
+			// strict mode pragma, execute code by injecting a
+			// script tag into the document.
+			if ( code.indexOf( "use strict" ) === 1 ) {
+				script = document.createElement( "script" );
+				script.text = code;
+				document.head.appendChild( script ).parentNode.removeChild( script );
+			} else {
+
+				// Otherwise, avoid the DOM node creation, insertion
+				// and removal by using an indirect global eval
+
+				indirect( code );
+			}
 		}
 	},
 
 	// Convert dashed to camelCase; used by the css and data modules
+	// Support: IE9-11+
 	// Microsoft forgot to hump their vendor prefix (#9572)
 	camelCase: function( string ) {
 		return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase );
@@ -330,7 +324,7 @@ jQuery.extend( {
 		return obj;
 	},
 
-	// Support: Android<4.1, IE<9
+	// Support: Android<4.1
 	trim: function( text ) {
 		return text == null ?
 			"" :
@@ -356,26 +350,7 @@ jQuery.extend( {
 	},
 
 	inArray: function( elem, arr, i ) {
-		var len;
-
-		if ( arr ) {
-			if ( indexOf ) {
-				return indexOf.call( arr, elem, i );
-			}
-
-			len = arr.length;
-			i = i ? i < 0 ? Math.max( 0, len + i ) : i : 0;
-
-			for ( ; i < len; i++ ) {
-
-				// Skip accessing in sparse arrays
-				if ( i in arr && arr[ i ] === elem ) {
-					return i;
-				}
-			}
-		}
-
-		return -1;
+		return arr == null ? -1 : indexOf.call( arr, elem, i );
 	},
 
 	merge: function( first, second ) {
@@ -383,16 +358,8 @@ jQuery.extend( {
 			j = 0,
 			i = first.length;
 
-		while ( j < len ) {
-			first[ i++ ] = second[ j++ ];
-		}
-
-		// Support: IE<9
-		// Workaround casting of .length to NaN on otherwise arraylike objects (e.g., NodeLists)
-		if ( len !== len ) {
-			while ( second[ j ] !== undefined ) {
-				first[ i++ ] = second[ j++ ];
-			}
+		for ( ; j < len; j++ ) {
+			first[ i++ ] = second[ j ];
 		}
 
 		first.length = i;
@@ -457,7 +424,7 @@ jQuery.extend( {
 	// Bind a function to a context, optionally partially applying any
 	// arguments.
 	proxy: function( fn, context ) {
-		var args, proxy, tmp;
+		var tmp, args, proxy;
 
 		if ( typeof context === "string" ) {
 			tmp = fn[ context ];
@@ -483,9 +450,7 @@ jQuery.extend( {
 		return proxy;
 	},
 
-	now: function() {
-		return +( new Date() );
-	},
+	now: Date.now,
 
 	// jQuery.support is not used in Core but other projects attach their
 	// properties to it so it needs to exist.
@@ -498,7 +463,7 @@ jQuery.extend( {
 // three lines.
 /* jshint ignore: start */
 if ( typeof Symbol === "function" ) {
-	jQuery.fn[ Symbol.iterator ] = deletedIds[ Symbol.iterator ];
+	jQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ];
 }
 /* jshint ignore: end */
 

src/core/access.js

@@ -6,7 +6,7 @@ define( [
 // The value/s can optionally be executed if it's a function
 var access = function( elems, fn, key, value, chainable, emptyGet, raw ) {
 	var i = 0,
-		length = elems.length,
+		len = elems.length,
 		bulk = key == null;
 
 	// Sets many values
@@ -41,11 +41,11 @@ var access = function( elems, fn, key, value, chainable, emptyGet, raw ) {
 		}
 
 		if ( fn ) {
-			for ( ; i < length; i++ ) {
+			for ( ; i < len; i++ ) {
 				fn(
-					elems[ i ],
-					key,
-					raw ? value : value.call( elems[ i ], i, fn( elems[ i ], key ) )
+					elems[ i ], key, raw ?
+					value :
+					value.call( elems[ i ], i, fn( elems[ i ], key ) )
 				);
 			}
 		}
@@ -57,7 +57,7 @@ var access = function( elems, fn, key, value, chainable, emptyGet, raw ) {
 		// Gets
 		bulk ?
 			fn.call( elems ) :
-			length ? fn( elems[ 0 ], key ) : emptyGet;
+			len ? fn( elems[ 0 ], key ) : emptyGet;
 };
 
 return access;

src/core/init.js

@@ -22,14 +22,14 @@ var rootjQuery,
 			return this;
 		}
 
-		// init accepts an alternate rootjQuery
+		// Method init() accepts an alternate rootjQuery
 		// so migrate can support jQuery.sub (gh-2101)
 		root = root || rootjQuery;
 
 		// Handle HTML strings
 		if ( typeof selector === "string" ) {
-			if ( selector.charAt( 0 ) === "<" &&
-				selector.charAt( selector.length - 1 ) === ">" &&
+			if ( selector[ 0 ] === "<" &&
+				selector[ selector.length - 1 ] === ">" &&
 				selector.length >= 3 ) {
 
 				// Assume that strings that start and end with <> are HTML and skip the regex check
@@ -46,7 +46,7 @@ var rootjQuery,
 				if ( match[ 1 ] ) {
 					context = context instanceof jQuery ? context[ 0 ] : context;
 
-					// scripts is true for back-compat
+					// Option to run scripts is true for back-compat
 					// Intentionally let the error be thrown if parseHTML is not present
 					jQuery.merge( this, jQuery.parseHTML(
 						match[ 1 ],
@@ -75,17 +75,11 @@ var rootjQuery,
 				} else {
 					elem = document.getElementById( match[ 2 ] );
 
-					// Check parentNode to catch when Blackberry 4.6 returns
-					// nodes that are no longer in the document #6963
+					// Support: Blackberry 4.6
+					// gEBID returns nodes no longer in the document (#6963)
 					if ( elem && elem.parentNode ) {
 
-						// Handle the case where IE and Opera return items
-						// by name instead of ID
-						if ( elem.id !== match[ 2 ] ) {
-							return rootjQuery.find( selector );
-						}
-
-						// Otherwise, we inject the element directly into the jQuery object
+						// Inject the element directly into the jQuery object
 						this.length = 1;
 						this[ 0 ] = elem;
 					}
@@ -114,7 +108,7 @@ var rootjQuery,
 		// HANDLE: $(function)
 		// Shortcut for document ready
 		} else if ( jQuery.isFunction( selector ) ) {
-			return typeof root.ready !== "undefined" ?
+			return root.ready !== undefined ?
 				root.ready( selector ) :
 
 				// Execute immediately if ready is not present

src/core/parseHTML.js

@@ -5,7 +5,7 @@ define( [
 	"../manipulation/buildFragment"
 ], function( jQuery, document, rsingleTag, buildFragment ) {
 
-// data: string of html
+// Argument "data" should be string of html
 // context (optional): If specified, the fragment will be created in this context,
 // defaults to document
 // keepScripts (optional): If true, will include scripts passed in the html string

src/core/ready.js

@@ -61,33 +61,13 @@ jQuery.extend( {
 	}
 } );
 
-/**
- * Clean-up method for dom ready events
- */
-function detach() {
-	if ( document.addEventListener ) {
-		document.removeEventListener( "DOMContentLoaded", completed );
-		window.removeEventListener( "load", completed );
-
-	} else {
-		document.detachEvent( "onreadystatechange", completed );
-		window.detachEvent( "onload", completed );
-	}
-}
-
 /**
  * The ready event handler and self cleanup method
  */
 function completed() {
-
-	// readyState === "complete" is good enough for us to call the dom ready in oldIE
-	if ( document.addEventListener ||
-		window.event.type === "load" ||
-		document.readyState === "complete" ) {
-
-		detach();
-		jQuery.ready();
-	}
+	document.removeEventListener( "DOMContentLoaded", completed );
+	window.removeEventListener( "load", completed );
+	jQuery.ready();
 }
 
 jQuery.ready.promise = function( obj ) {
@@ -97,7 +77,7 @@ jQuery.ready.promise = function( obj ) {
 
 		// Catch cases where $(document).ready() is called
 		// after the browser event has already occurred.
-		// Support: IE6-10
+		// Support: IE9-10 only
 		// Older IE sometimes signals "interactive" too soon
 		if ( document.readyState === "complete" ||
 			( document.readyState !== "loading" && !document.documentElement.doScroll ) ) {
@@ -105,53 +85,13 @@ jQuery.ready.promise = function( obj ) {
 			// Handle it asynchronously to allow scripts the opportunity to delay ready
 			window.setTimeout( jQuery.ready );
 
-		// Standards-based browsers support DOMContentLoaded
-		} else if ( document.addEventListener ) {
+		} else {
 
 			// Use the handy event callback
 			document.addEventListener( "DOMContentLoaded", completed );
 
 			// A fallback to window.onload, that will always work
 			window.addEventListener( "load", completed );
-
-		// If IE event model is used
-		} else {
-
-			// Ensure firing before onload, maybe late but safe also for iframes
-			document.attachEvent( "onreadystatechange", completed );
-
-			// A fallback to window.onload, that will always work
-			window.attachEvent( "onload", completed );
-
-			// If IE and not a frame
-			// continually check to see if the document is ready
-			var top = false;
-
-			try {
-				top = window.frameElement == null && document.documentElement;
-			} catch ( e ) {}
-
-			if ( top && top.doScroll ) {
-				( function doScrollCheck() {
-					if ( !jQuery.isReady ) {
-
-						try {
-
-							// Use the trick by Diego Perini
-							// http://javascript.nwbox.com/IEContentLoaded/
-							top.doScroll( "left" );
-						} catch ( e ) {
-							return window.setTimeout( doScrollCheck, 50 );
-						}
-
-						// detach all dom ready events
-						detach();
-
-						// and execute any waiting functions
-						jQuery.ready();
-					}
-				} )();
-			}
 		}
 	}
 	return readyList.promise( obj );

src/css.js

@@ -8,32 +8,27 @@ define( [
 	"./css/var/rnumnonpx",
 	"./css/var/cssExpand",
 	"./css/var/isHidden",
+	"./css/var/getStyles",
 	"./css/var/swap",
 	"./css/curCSS",
 	"./css/adjustCSS",
 	"./css/defaultDisplay",
 	"./css/addGetHookIf",
 	"./css/support",
+	"./data/var/dataPriv",
 
 	"./core/init",
 	"./core/ready",
 	"./selector" // contains
-], function( jQuery, pnum, access, rmargin, document, rcssNum, rnumnonpx, cssExpand,
-	isHidden, swap, curCSS, adjustCSS, defaultDisplay, addGetHookIf, support ) {
+], function( jQuery, pnum, access, rmargin, document, rcssNum, rnumnonpx, cssExpand, isHidden,
+	getStyles, swap, curCSS, adjustCSS, defaultDisplay, addGetHookIf, support, dataPriv ) {
 
 var
 
-	// BuildExclude
-	getStyles = curCSS.getStyles,
-	ralpha = /alpha\([^)]*\)/i,
-	ropacity = /opacity\s*=\s*([^)]*)/i,
-
-	// swappable if display is none or starts with table except
-	// "table", "table-cell", or "table-caption"
-	// see here for display values:
-	// https://developer.mozilla.org/en-US/docs/CSS/display
+	// Swappable if display is none or starts with table
+	// except "table", "table-cell", or "table-caption"
+	// See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display
 	rdisplayswap = /^(none|table(?!-c[ea]).+)/,
-	rnumsplit = new RegExp( "^(" + pnum + ")(.*)$", "i" ),
 
 	cssShow = { position: "absolute", visibility: "hidden", display: "block" },
 	cssNormalTransform = {
@@ -44,19 +39,16 @@ var
 	cssPrefixes = [ "Webkit", "O", "Moz", "ms" ],
 	emptyStyle = document.createElement( "div" ).style;
 
-// BuildExclude
-curCSS = curCSS.curCSS;
-
-// return a css property mapped to a potentially vendor prefixed property
+// Return a css property mapped to a potentially vendor prefixed property
 function vendorPropName( name ) {
 
-	// shortcut for names that are not vendor prefixed
+	// Shortcut for names that are not vendor prefixed
 	if ( name in emptyStyle ) {
 		return name;
 	}
 
-	// check for vendor prefixed names
-	var capName = name.charAt( 0 ).toUpperCase() + name.slice( 1 ),
+	// Check for vendor prefixed names
+	var capName = name[ 0 ].toUpperCase() + name.slice( 1 ),
 		i = cssPrefixes.length;
 
 	while ( i-- ) {
@@ -67,69 +59,15 @@ function vendorPropName( name ) {
 	}
 }
 
-function showHide( elements, show ) {
-	var display, elem, hidden,
-		values = [],
-		index = 0,
-		length = elements.length;
-
-	for ( ; index < length; index++ ) {
-		elem = elements[ index ];
-		if ( !elem.style ) {
-			continue;
-		}
-
-		values[ index ] = jQuery._data( elem, "olddisplay" );
-		display = elem.style.display;
-		if ( show ) {
-
-			// Reset the inline display of this element to learn if it is
-			// being hidden by cascaded rules or not
-			if ( !values[ index ] && display === "none" ) {
-				elem.style.display = "";
-			}
-
-			// Set elements which have been overridden with display: none
-			// in a stylesheet to whatever the default browser style is
-			// for such an element
-			if ( elem.style.display === "" && isHidden( elem ) ) {
-				values[ index ] =
-					jQuery._data( elem, "olddisplay", defaultDisplay( elem.nodeName ) );
-			}
-		} else {
-			hidden = isHidden( elem );
-
-			if ( display && display !== "none" || !hidden ) {
-				jQuery._data(
-					elem,
-					"olddisplay",
-					hidden ? display : jQuery.css( elem, "display" )
-				);
-			}
-		}
-	}
-
-	// Set the display of most of the elements in a second loop
-	// to avoid the constant reflow
-	for ( index = 0; index < length; index++ ) {
-		elem = elements[ index ];
-		if ( !elem.style ) {
-			continue;
-		}
-		if ( !show || elem.style.display === "none" || elem.style.display === "" ) {
-			elem.style.display = show ? values[ index ] || "" : "none";
-		}
-	}
-
-	return elements;
-}
-
 function setPositiveNumber( elem, value, subtract ) {
-	var matches = rnumsplit.exec( value );
+
+	// Any relative (+/-) values have already been
+	// normalized at this point
+	var matches = rcssNum.exec( value );
 	return matches ?
 
 		// Guard against undefined "subtract", e.g., when used as in cssHooks
-		Math.max( 0, matches[ 1 ] - ( subtract || 0 ) ) + ( matches[ 2 ] || "px" ) :
+		Math.max( 0, matches[ 2 ] - ( subtract || 0 ) ) + ( matches[ 3 ] || "px" ) :
 		value;
 }
 
@@ -146,7 +84,7 @@ function augmentWidthOrHeight( elem, name, extra, isBorderBox, styles ) {
 
 	for ( ; i < 4; i += 2 ) {
 
-		// both box models exclude margin, so add it if we want it
+		// Both box models exclude margin, so add it if we want it
 		if ( extra === "margin" ) {
 			val += jQuery.css( elem, extra + cssExpand[ i ], true, styles );
 		}
@@ -158,16 +96,16 @@ function augmentWidthOrHeight( elem, name, extra, isBorderBox, styles ) {
 				val -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
 			}
 
-			// at this point, extra isn't border nor margin, so remove border
+			// At this point, extra isn't border nor margin, so remove border
 			if ( extra !== "margin" ) {
 				val -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
 			}
 		} else {
 
-			// at this point, extra isn't content, so add padding
+			// At this point, extra isn't content, so add padding
 			val += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
 
-			// at this point, extra isn't content nor padding, so add border
+			// At this point, extra isn't content nor padding, so add border
 			if ( extra !== "padding" ) {
 				val += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
 			}
@@ -183,8 +121,7 @@ function getWidthOrHeight( elem, name, extra ) {
 	var valueIsBorderBox = true,
 		val = name === "width" ? elem.offsetWidth : elem.offsetHeight,
 		styles = getStyles( elem ),
-		isBorderBox = support.boxSizing &&
-			jQuery.css( elem, "boxSizing", false, styles ) === "border-box";
+		isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box";
 
 	// Support: IE11 only
 	// In IE 11 fullscreen elements inside of an iframe have
@@ -199,7 +136,7 @@ function getWidthOrHeight( elem, name, extra ) {
 		}
 	}
 
-	// some non-html elements return undefined for offsetWidth, so check for null/undefined
+	// Some non-html elements return undefined for offsetWidth, so check for null/undefined
 	// svg - https://bugzilla.mozilla.org/show_bug.cgi?id=649285
 	// MathML - https://bugzilla.mozilla.org/show_bug.cgi?id=491668
 	if ( val <= 0 || val == null ) {
@@ -215,7 +152,7 @@ function getWidthOrHeight( elem, name, extra ) {
 			return val;
 		}
 
-		// we need the check for style in case a browser which returns unreliable values
+		// Check for style in case a browser which returns unreliable values
 		// for getComputedStyle silently falls back to the reliable elem.style
 		valueIsBorderBox = isBorderBox &&
 			( support.boxSizingReliable() || val === elem.style[ name ] );
@@ -224,7 +161,7 @@ function getWidthOrHeight( elem, name, extra ) {
 		val = parseFloat( val ) || 0;
 	}
 
-	// use the active box-sizing model to add/subtract irrelevant styles
+	// Use the active box-sizing model to add/subtract irrelevant styles
 	return ( val +
 		augmentWidthOrHeight(
 			elem,
@@ -236,6 +173,66 @@ function getWidthOrHeight( elem, name, extra ) {
 	) + "px";
 }
 
+function showHide( elements, show ) {
+	var display, elem, hidden,
+		values = [],
+		index = 0,
+		length = elements.length;
+
+	for ( ; index < length; index++ ) {
+		elem = elements[ index ];
+		if ( !elem.style ) {
+			continue;
+		}
+
+		values[ index ] = dataPriv.get( elem, "olddisplay" );
+		display = elem.style.display;
+		if ( show ) {
+
+			// Reset the inline display of this element to learn if it is
+			// being hidden by cascaded rules or not
+			if ( !values[ index ] && display === "none" ) {
+				elem.style.display = "";
+			}
+
+			// Set elements which have been overridden with display: none
+			// in a stylesheet to whatever the default browser style is
+			// for such an element
+			if ( elem.style.display === "" && isHidden( elem ) ) {
+				values[ index ] = dataPriv.access(
+					elem,
+					"olddisplay",
+					defaultDisplay( elem.nodeName )
+				);
+			}
+		} else {
+			hidden = isHidden( elem );
+
+			if ( display !== "none" || !hidden ) {
+				dataPriv.set(
+					elem,
+					"olddisplay",
+					hidden ? display : jQuery.css( elem, "display" )
+				);
+			}
+		}
+	}
+
+	// Set the display of most of the elements in a second loop
+	// to avoid the constant reflow
+	for ( index = 0; index < length; index++ ) {
+		elem = elements[ index ];
+		if ( !elem.style ) {
+			continue;
+		}
+		if ( !show || elem.style.display === "none" || elem.style.display === "" ) {
+			elem.style.display = show ? values[ index ] || "" : "none";
+		}
+	}
+
+	return elements;
+}
+
 jQuery.extend( {
 
 	// Add in style property hooks for overriding the default
@@ -273,9 +270,7 @@ jQuery.extend( {
 	// Add in properties whose names you wish to fix before
 	// setting or getting the value
 	cssProps: {
-
-		// normalize float css property
-		"float": support.cssFloat ? "cssFloat" : "styleFloat"
+		"float": "cssFloat"
 	},
 
 	// Get and set the style property on a DOM Node
@@ -294,8 +289,7 @@ jQuery.extend( {
 		name = jQuery.cssProps[ origName ] ||
 			( jQuery.cssProps[ origName ] = vendorPropName( origName ) || origName );
 
-		// gets hook for the prefixed version
-		// followed by the unprefixed version
+		// Gets hook for the prefixed version, then unprefixed version
 		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];
 
 		// Check if we're setting a value
@@ -310,7 +304,7 @@ jQuery.extend( {
 				type = "number";
 			}
 
-			// Make sure that null and NaN values aren't set. See: #7116
+			// Make sure that null and NaN values aren't set (#7116)
 			if ( value == null || value !== value ) {
 				return;
 			}
@@ -320,9 +314,8 @@ jQuery.extend( {
 				value += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? "" : "px" );
 			}
 
-			// Fixes #8908, it can be done more correctly by specifing setters in cssHooks,
-			// but it would mean to define eight
-			// (for every problematic property) identical functions
+			// Support: IE9-11+
+			// background-* props affect original clone's values
 			if ( !support.clearCloneStyle && value === "" && name.indexOf( "background" ) === 0 ) {
 				style[ name ] = "inherit";
 			}
@@ -331,11 +324,7 @@ jQuery.extend( {
 			if ( !hooks || !( "set" in hooks ) ||
 				( value = hooks.set( elem, value, extra ) ) !== undefined ) {
 
-				// Support: IE
-				// Swallow errors from 'invalid' CSS values (#5509)
-				try {
-					style[ name ] = value;
-				} catch ( e ) {}
+				style[ name ] = value;
 			}
 
 		} else {
@@ -353,15 +342,14 @@ jQuery.extend( {
 	},
 
 	css: function( elem, name, extra, styles ) {
-		var num, val, hooks,
+		var val, num, hooks,
 			origName = jQuery.camelCase( name );
 
 		// Make sure that we're working with the right name
 		name = jQuery.cssProps[ origName ] ||
 			( jQuery.cssProps[ origName ] = vendorPropName( origName ) || origName );
 
-		// gets hook for the prefixed version
-		// followed by the unprefixed version
+		// Try prefixed name followed by the unprefixed name
 		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];
 
 		// If a hook was provided get the computed value from there
@@ -374,12 +362,12 @@ jQuery.extend( {
 			val = curCSS( elem, name, styles );
 		}
 
-		//convert "normal" to computed value
+		// Convert "normal" to computed value
 		if ( val === "normal" && name in cssNormalTransform ) {
 			val = cssNormalTransform[ name ];
 		}
 
-		// Return, converting to number if forced or a qualifier was provided and val looks numeric
+		// Make numeric if forced or a qualifier was provided and val looks numeric
 		if ( extra === "" || extra ) {
 			num = parseFloat( val );
 			return extra === true || isFinite( num ) ? num || 0 : val;
@@ -393,8 +381,8 @@ jQuery.each( [ "height", "width" ], function( i, name ) {
 		get: function( elem, computed, extra ) {
 			if ( computed ) {
 
-				// certain elements can have dimension info if we invisibly show them
-				// however, it must have a current display style that would benefit from this
+				// Certain elements can have dimension info if we invisibly show them
+				// but it must have a current display style that would benefit
 				return rdisplayswap.test( jQuery.css( elem, "display" ) ) &&
 					elem.offsetWidth === 0 ?
 						swap( elem, cssShow, function() {
@@ -405,97 +393,48 @@ jQuery.each( [ "height", "width" ], function( i, name ) {
 		},
 
 		set: function( elem, value, extra ) {
-			var styles = extra && getStyles( elem );
-			return setPositiveNumber( elem, value, extra ?
-				augmentWidthOrHeight(
+			var matches,
+				styles = extra && getStyles( elem ),
+				subtract = extra && augmentWidthOrHeight(
 					elem,
 					name,
 					extra,
-					support.boxSizing &&
-						jQuery.css( elem, "boxSizing", false, styles ) === "border-box",
+					jQuery.css( elem, "boxSizing", false, styles ) === "border-box",
 					styles
-				) : 0
-			);
-		}
-	};
-} );
-
-if ( !support.opacity ) {
-	jQuery.cssHooks.opacity = {
-		get: function( elem, computed ) {
+				);
 
-			// IE uses filters for opacity
-			return ropacity.test( ( computed && elem.currentStyle ?
-				elem.currentStyle.filter :
-				elem.style.filter ) || "" ) ?
-					( 0.01 * parseFloat( RegExp.$1 ) ) + "" :
-					computed ? "1" : "";
-		},
+			// Convert to pixels if value adjustment is needed
+			if ( subtract && ( matches = rcssNum.exec( value ) ) &&
+				( matches[ 3 ] || "px" ) !== "px" ) {
 
-		set: function( elem, value ) {
-			var style = elem.style,
-				currentStyle = elem.currentStyle,
-				opacity = jQuery.isNumeric( value ) ? "alpha(opacity=" + value * 100 + ")" : "",
-				filter = currentStyle && currentStyle.filter || style.filter || "";
-
-			// IE has trouble with opacity if it does not have layout
-			// Force it by setting the zoom level
-			style.zoom = 1;
-
-			// if setting opacity to 1, and no other filters exist -
-			// attempt to remove filter attribute #6652
-			// if value === "", then remove inline opacity #12685
-			if ( ( value >= 1 || value === "" ) &&
-					jQuery.trim( filter.replace( ralpha, "" ) ) === "" &&
-					style.removeAttribute ) {
-
-				// Setting style.filter to null, "" & " " still leave "filter:" in the cssText
-				// if "filter:" is present at all, clearType is disabled, we want to avoid this
-				// style.removeAttribute is IE Only, but so apparently is this code path...
-				style.removeAttribute( "filter" );
-
-				// if there is no filter style applied in a css rule
-				// or unset inline opacity, we are done
-				if ( value === "" || currentStyle && !currentStyle.filter ) {
-					return;
-				}
+				elem.style[ name ] = value;
+				value = jQuery.css( elem, name );
 			}
 
-			// otherwise, set new filter values
-			style.filter = ralpha.test( filter ) ?
-				filter.replace( ralpha, opacity ) :
-				filter + " " + opacity;
+			return setPositiveNumber( elem, value, subtract );
 		}
 	};
-}
+} );
 
-jQuery.cssHooks.marginRight = addGetHookIf( support.reliableMarginRight,
+jQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft,
 	function( elem, computed ) {
 		if ( computed ) {
-			return swap( elem, { "display": "inline-block" },
-				curCSS, [ elem, "marginRight" ] );
+			return ( parseFloat( curCSS( elem, "marginLeft" ) ) ||
+				elem.getBoundingClientRect().left -
+					swap( elem, { marginLeft: 0 }, function() {
+						return elem.getBoundingClientRect().left;
+					} )
+				) + "px";
 		}
 	}
 );
 
-jQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft,
+// Support: Android 2.3
+jQuery.cssHooks.marginRight = addGetHookIf( support.reliableMarginRight,
 	function( elem, computed ) {
 		if ( computed ) {
-			return (
-				parseFloat( curCSS( elem, "marginLeft" ) ) ||
-
-				// Support: IE<=11+
-				// Running getBoundingClientRect on a disconnected node in IE throws an error
-				// Support: IE8 only
-				// getClientRects() errors on disconnected elems
-				( jQuery.contains( elem.ownerDocument, elem ) ?
-					elem.getBoundingClientRect().left -
-						swap( elem, { marginLeft: 0 }, function() {
-							return elem.getBoundingClientRect().left;
-						} ) :
-					0
-				)
-			) + "px";
+			return swap( elem, { "display": "inline-block" },
+				curCSS, [ elem, "marginRight" ] );
 		}
 	}
 );
@@ -511,7 +450,7 @@ jQuery.each( {
 			var i = 0,
 				expanded = {},
 
-				// assumes a single number if not a string
+				// Assumes a single number if not a string
 				parts = typeof value === "string" ? value.split( " " ) : [ value ];
 
 			for ( ; i < 4; i++ ) {

src/css/curCSS.js

 define( [
-	"exports",
 	"../core",
-	"../var/documentElement",
 	"./var/rnumnonpx",
 	"./var/rmargin",
+	"./var/getStyles",
 	"./support",
-	"../selector" // contains
-], function( exports, jQuery, documentElement, rnumnonpx, rmargin, support ) {
-
-var getStyles, curCSS,
-	rposition = /^(top|right|bottom|left)$/;
-
-if ( window.getComputedStyle ) {
-	getStyles = function( elem ) {
-
-		// Support: IE<=11+, Firefox<=30+ (#15098, #14150)
-		// IE throws on elements created in popups
-		// FF meanwhile throws on frame elements through "defaultView.getComputedStyle"
-		var view = elem.ownerDocument.defaultView;
-
-		if ( !view || !view.opener ) {
-			view = window;
-		}
-
-		return view.getComputedStyle( elem );
-	};
-
-	curCSS = function( elem, name, computed ) {
-		var width, minWidth, maxWidth, ret,
-			style = elem.style;
-
-		computed = computed || getStyles( elem );
-
-		// getPropertyValue is only needed for .css('filter') in IE9, see #12537
-		ret = computed ? computed.getPropertyValue( name ) || computed[ name ] : undefined;
-
-		// Support: Opera 12.1x only
-		// Fall back to style even without computed
-		// computed is undefined for elems on document fragments
-		if ( ( ret === "" || ret === undefined ) && !jQuery.contains( elem.ownerDocument, elem ) ) {
-			ret = jQuery.style( elem, name );
-		}
-
-		if ( computed ) {
-
-			// A tribute to the "awesome hack by Dean Edwards"
-			// Chrome < 17 and Safari 5.0 uses "computed value"
-			// instead of "used value" for margin-right
-			// Safari 5.1.7 (at least) returns percentage for a larger set of values,
-			// but width seems to be reliably pixels
-			// this is against the CSSOM draft spec:
-			// http://dev.w3.org/csswg/cssom/#resolved-values
-			if ( !support.pixelMarginRight() && rnumnonpx.test( ret ) && rmargin.test( name ) ) {
-
-				// Remember the original values
-				width = style.width;
-				minWidth = style.minWidth;
-				maxWidth = style.maxWidth;
-
-				// Put in the new values to get a computed value out
-				style.minWidth = style.maxWidth = style.width = ret;
-				ret = computed.width;
-
-				// Revert the changed values
-				style.width = width;
-				style.minWidth = minWidth;
-				style.maxWidth = maxWidth;
-			}
-		}
-
-		// Support: IE
-		// IE returns zIndex value as an integer.
-		return ret === undefined ?
-			ret :
-			ret + "";
-	};
-} else if ( documentElement.currentStyle ) {
-	getStyles = function( elem ) {
-		return elem.currentStyle;
-	};
-
-	curCSS = function( elem, name, computed ) {
-		var left, rs, rsLeft, ret,
-			style = elem.style;
-
-		computed = computed || getStyles( elem );
-		ret = computed ? computed[ name ] : undefined;
-
-		// Avoid setting ret to empty string here
-		// so we don't default to auto
-		if ( ret == null && style && style[ name ] ) {
-			ret = style[ name ];
-		}
-
-		// From the awesome hack by Dean Edwards
-		// http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
-
-		// If we're not dealing with a regular pixel number
-		// but a number that has a weird ending, we need to convert it to pixels
-		// but not position css attributes, as those are
-		// proportional to the parent element instead
-		// and we can't measure the parent instead because it
-		// might trigger a "stacking dolls" problem
-		if ( rnumnonpx.test( ret ) && !rposition.test( name ) ) {
+	"../selector" // Get jQuery.contains
+], function( jQuery, rnumnonpx, rmargin, getStyles, support ) {
+
+function curCSS( elem, name, computed ) {
+	var width, minWidth, maxWidth, ret,
+		style = elem.style;
+
+	computed = computed || getStyles( elem );
+	ret = computed ? computed.getPropertyValue( name ) || computed[ name ] : undefined;
+
+	// Support: Opera 12.1x only
+	// Fall back to style even without computed
+	// computed is undefined for elems on document fragments
+	if ( ( ret === "" || ret === undefined ) && !jQuery.contains( elem.ownerDocument, elem ) ) {
+		ret = jQuery.style( elem, name );
+	}
+
+	// Support: IE9
+	// getPropertyValue is only needed for .css('filter') (#12537)
+	if ( computed ) {
+
+		// A tribute to the "awesome hack by Dean Edwards"
+		// Android Browser returns percentage for some values,
+		// but width seems to be reliably pixels.
+		// This is against the CSSOM draft spec:
+		// http://dev.w3.org/csswg/cssom/#resolved-values
+		if ( !support.pixelMarginRight() && rnumnonpx.test( ret ) && rmargin.test( name ) ) {
 
 			// Remember the original values
-			left = style.left;
-			rs = elem.runtimeStyle;
-			rsLeft = rs && rs.left;
+			width = style.width;
+			minWidth = style.minWidth;
+			maxWidth = style.maxWidth;
 
 			// Put in the new values to get a computed value out
-			if ( rsLeft ) {
-				rs.left = elem.currentStyle.left;
-			}
-			style.left = name === "fontSize" ? "1em" : ret;
-			ret = style.pixelLeft + "px";
+			style.minWidth = style.maxWidth = style.width = ret;
+			ret = computed.width;
 
 			// Revert the changed values
-			style.left = left;
-			if ( rsLeft ) {
-				rs.left = rsLeft;
-			}
+			style.width = width;
+			style.minWidth = minWidth;
+			style.maxWidth = maxWidth;
 		}
+	}
+
+	return ret !== undefined ?
 
-		// Support: IE
+		// Support: IE9-11+
 		// IE returns zIndex value as an integer.
-		return ret === undefined ?
-			ret :
-			ret + "" || "auto";
-	};
+		ret + "" :
+		ret;
 }
 
-exports.getStyles = getStyles;
-exports.curCSS = curCSS;
-
+return curCSS;
 } );

src/css/defaultDisplay.js

@@ -51,7 +51,7 @@ function defaultDisplay( nodeName ) {
 				.appendTo( doc.documentElement );
 
 			// Always write a new HTML skeleton so Webkit and Firefox don't choke on reuse
-			doc = ( iframe[ 0 ].contentWindow || iframe[ 0 ].contentDocument ).document;
+			doc = iframe[ 0 ].contentDocument;
 
 			// Support: IE
 			doc.write();

src/css/hiddenVisibleSelectors.js

 define( [
 	"../core",
-	"./support",
-	"../selector",
-	"../css"
-], function( jQuery, support ) {
-
-function getDisplay( elem ) {
-	return elem.style && elem.style.display || jQuery.css( elem, "display" );
-}
-
-function filterHidden( elem ) {
-	while ( elem && elem.nodeType === 1 ) {
-		if ( getDisplay( elem ) === "none" || elem.type === "hidden" ) {
-			return true;
-		}
-		elem = elem.parentNode;
-	}
-	return false;
-}
+	"../selector"
+], function( jQuery ) {
 
 jQuery.expr.filters.hidden = function( elem ) {
+	return !jQuery.expr.filters.visible( elem );
+};
+jQuery.expr.filters.visible = function( elem ) {
 
 	// Support: Opera <= 12.12
 	// Opera reports offsetWidths and offsetHeights less than zero on some elements
-	return support.reliableHiddenOffsets() ?
-		( elem.offsetWidth <= 0 && elem.offsetHeight <= 0 &&
-			!elem.getClientRects().length ) :
-			filterHidden( elem );
-};
-
-jQuery.expr.filters.visible = function( elem ) {
-	return !jQuery.expr.filters.hidden( elem );
+	// Use OR instead of AND as the element is not visible if either is true
+	// See tickets #10406 and #13132
+	return elem.offsetWidth > 0 || elem.offsetHeight > 0 || elem.getClientRects().length > 0;
 };
 
 } );

src/css/showHide.js

-define( [], function() {
+define( [
+	"../data/var/dataPriv"
+], function( dataPriv ) {
+
 function showHide( elements, show ) {
 	var display, elem,
 		values = [],
@@ -17,14 +20,14 @@ function showHide( elements, show ) {
 			if ( display === "none" ) {
 
 				// Restore a pre-hide() value if we have one
-				values[ index ] = jQuery._data( elem, "display" ) || "";
+				values[ index ] = dataPriv.get( elem, "display" ) || "";
 			}
 		} else {
 			if ( display !== "none" ) {
 				values[ index ] = "none";
 
 				// Remember the value we're replacing
-				jQuery._data( elem, "display", display );
+				dataPriv.set( elem, "display", display );
 			}
 		}
 	}

src/css/support.js

@@ -6,8 +6,7 @@ define( [
 ], function( jQuery, document, documentElement, support ) {
 
 ( function() {
-	var pixelPositionVal, pixelMarginRightVal, boxSizingReliableVal,
-		reliableHiddenOffsetsVal, reliableMarginRightVal, reliableMarginLeftVal,
+	var pixelPositionVal, boxSizingReliableVal, pixelMarginRightVal, reliableMarginLeftVal,
 		container = document.createElement( "div" ),
 		div = document.createElement( "div" );
 
@@ -16,166 +15,105 @@ define( [
 		return;
 	}
 
-	div.style.cssText = "float:left;opacity:.5";
-
-	// Support: IE<9
-	// Make sure that element opacity exists (as opposed to filter)
-	support.opacity = div.style.opacity === "0.5";
-
-	// Verify style float existence
-	// (IE uses styleFloat instead of cssFloat)
-	support.cssFloat = !!div.style.cssFloat;
-
+	// Support: IE9-11+
+	// Style of cloned element affects source element cloned (#8908)
 	div.style.backgroundClip = "content-box";
 	div.cloneNode( true ).style.backgroundClip = "";
 	support.clearCloneStyle = div.style.backgroundClip === "content-box";
 
-	container = document.createElement( "div" );
 	container.style.cssText = "border:0;width:8px;height:0;top:0;left:-9999px;" +
 		"padding:0;margin-top:1px;position:absolute";
-	div.innerHTML = "";
 	container.appendChild( div );
 
-	// Support: Firefox<29, Android 2.3
-	// Vendor-prefix box-sizing
-	support.boxSizing = div.style.boxSizing === "" || div.style.MozBoxSizing === "" ||
-		div.style.WebkitBoxSizing === "";
+	// Executing both pixelPosition & boxSizingReliable tests require only one layout
+	// so they're executed at the same time to save the second computation.
+	function computeStyleTests() {
+		div.style.cssText =
+
+			// Support: Firefox<29, Android 2.3
+			// Vendor-prefix box-sizing
+			"-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;" +
+			"position:relative;display:block;" +
+			"margin:auto;border:1px;padding:1px;" +
+			"top:1%;width:50%";
+		div.innerHTML = "";
+		documentElement.appendChild( container );
+
+		var divStyle = window.getComputedStyle( div );
+		pixelPositionVal = divStyle.top !== "1%";
+		reliableMarginLeftVal = divStyle.marginLeft === "2px";
+		boxSizingReliableVal = divStyle.width === "4px";
+
+		// Support: Android 4.0 - 4.3 only
+		// Some styles come back with percentage values, even though they shouldn't
+		div.style.marginRight = "50%";
+		pixelMarginRightVal = divStyle.marginRight === "4px";
+
+		documentElement.removeChild( container );
+	}
 
 	jQuery.extend( support, {
-		reliableHiddenOffsets: function() {
-			if ( pixelPositionVal == null ) {
-				computeStyleTests();
-			}
-			return reliableHiddenOffsetsVal;
-		},
+		pixelPosition: function() {
 
+			// This test is executed only once but we still do memoizing
+			// since we can use the boxSizingReliable pre-computing.
+			// No need to check if the test was already performed, though.
+			computeStyleTests();
+			return pixelPositionVal;
+		},
 		boxSizingReliable: function() {
-
-			// We're checking for pixelPositionVal here instead of boxSizingReliableVal
-			// since that compresses better and they're computed together anyway.
-			if ( pixelPositionVal == null ) {
+			if ( boxSizingReliableVal == null ) {
 				computeStyleTests();
 			}
 			return boxSizingReliableVal;
 		},
-
 		pixelMarginRight: function() {
 
 			// Support: Android 4.0-4.3
-			if ( pixelPositionVal == null ) {
+			// We're checking for boxSizingReliableVal here instead of pixelMarginRightVal
+			// since that compresses better and they're computed together anyway.
+			if ( boxSizingReliableVal == null ) {
 				computeStyleTests();
 			}
 			return pixelMarginRightVal;
 		},
-
-		pixelPosition: function() {
-			if ( pixelPositionVal == null ) {
-				computeStyleTests();
-			}
-			return pixelPositionVal;
-		},
-
-		reliableMarginRight: function() {
-
-			// Support: Android 2.3
-			if ( pixelPositionVal == null ) {
-				computeStyleTests();
-			}
-			return reliableMarginRightVal;
-		},
-
 		reliableMarginLeft: function() {
 
 			// Support: IE <=8 only, Android 4.0 - 4.3 only, Firefox <=3 - 37
-			if ( pixelPositionVal == null ) {
+			if ( boxSizingReliableVal == null ) {
 				computeStyleTests();
 			}
 			return reliableMarginLeftVal;
-		}
-	} );
-
-	function computeStyleTests() {
-		var contents, divStyle,
-			documentElement = document.documentElement;
-
-		// Setup
-		documentElement.appendChild( container );
-
-		div.style.cssText =
+		},
+		reliableMarginRight: function() {
 
 			// Support: Android 2.3
-			// Vendor-prefix box-sizing
-			"-webkit-box-sizing:border-box;box-sizing:border-box;" +
-			"position:relative;display:block;" +
-			"margin:auto;border:1px;padding:1px;" +
-			"top:1%;width:50%";
-
-		// Support: IE<9
-		// Assume reasonable values in the absence of getComputedStyle
-		pixelPositionVal = boxSizingReliableVal = reliableMarginLeftVal = false;
-		pixelMarginRightVal = reliableMarginRightVal = true;
-
-		// Check for getComputedStyle so that this code is not run in IE<9.
-		if ( window.getComputedStyle ) {
-			divStyle = window.getComputedStyle( div );
-			pixelPositionVal = ( divStyle || {} ).top !== "1%";
-			reliableMarginLeftVal = ( divStyle || {} ).marginLeft === "2px";
-			boxSizingReliableVal = ( divStyle || { width: "4px" } ).width === "4px";
-
-			// Support: Android 4.0 - 4.3 only
-			// Some styles come back with percentage values, even though they shouldn't
-			div.style.marginRight = "50%";
-			pixelMarginRightVal = ( divStyle || { marginRight: "4px" } ).marginRight === "4px";
-
-			// Support: Android 2.3 only
-			// Div with explicit width and no margin-right incorrectly
-			// gets computed margin-right based on width of container (#3333)
+			// Check if div with explicit width and no margin-right incorrectly
+			// gets computed margin-right based on width of container. (#3333)
 			// WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
-			contents = div.appendChild( document.createElement( "div" ) );
+			// This support function is only executed once so no memoizing is needed.
+			var ret,
+				marginDiv = div.appendChild( document.createElement( "div" ) );
 
 			// Reset CSS: box-sizing; display; margin; border; padding
-			contents.style.cssText = div.style.cssText =
+			marginDiv.style.cssText = div.style.cssText =
 
 				// Support: Android 2.3
 				// Vendor-prefix box-sizing
-				"-webkit-box-sizing:content-box;-moz-box-sizing:content-box;" +
-				"box-sizing:content-box;display:block;margin:0;border:0;padding:0";
-			contents.style.marginRight = contents.style.width = "0";
+				"-webkit-box-sizing:content-box;box-sizing:content-box;" +
+				"display:block;margin:0;border:0;padding:0";
+			marginDiv.style.marginRight = marginDiv.style.width = "0";
 			div.style.width = "1px";
+			documentElement.appendChild( container );
 
-			reliableMarginRightVal =
-				!parseFloat( ( window.getComputedStyle( contents ) || {} ).marginRight );
+			ret = !parseFloat( window.getComputedStyle( marginDiv ).marginRight );
 
-			div.removeChild( contents );
-		}
+			documentElement.removeChild( container );
+			div.removeChild( marginDiv );
 
-		// Support: IE6-8
-		// First check that getClientRects works as expected
-		// Check if table cells still have offsetWidth/Height when they are set
-		// to display:none and there are still other visible table cells in a
-		// table row; if so, offsetWidth/Height are not reliable for use when
-		// determining if an element has been hidden directly using
-		// display:none (it is still safe to use offsets if a parent element is
-		// hidden; don safety goggles and see bug #4512 for more information).
-		div.style.display = "none";
-		reliableHiddenOffsetsVal = div.getClientRects().length === 0;
-		if ( reliableHiddenOffsetsVal ) {
-			div.style.display = "";
-			div.innerHTML = "<table><tr><td></td><td>t</td></tr></table>";
-			contents = div.getElementsByTagName( "td" );
-			contents[ 0 ].style.cssText = "margin:0;border:0;padding:0;display:none";
-			reliableHiddenOffsetsVal = contents[ 0 ].offsetHeight === 0;
-			if ( reliableHiddenOffsetsVal ) {
-				contents[ 0 ].style.display = "";
-				contents[ 1 ].style.display = "none";
-				reliableHiddenOffsetsVal = contents[ 0 ].offsetHeight === 0;
-			}
+			return ret;
 		}
-
-		// Teardown
-		documentElement.removeChild( container );
-	}
-
+	} );
 } )();
 
 return support;

src/data.js

 define( [
 	"./core",
-	"./var/deletedIds",
-	"./data/support",
-	"./data/var/acceptData"
-], function( jQuery, deletedIds, support, acceptData ) {
+	"./core/access",
+	"./data/var/dataPriv",
+	"./data/var/dataUser"
+], function( jQuery, access, dataPriv, dataUser ) {
+
+//	Implementation Summary
+//
+//	1. Enforce API surface and semantic compatibility with 1.9.x branch
+//	2. Improve the module's maintainability by reducing the storage
+//		paths to a single mechanism.
+//	3. Use the same single mechanism to support "private" and "user" data.
+//	4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData)
+//	5. Avoid exposing implementation details on user objects (eg. expando properties)
+//	6. Provide a clear path for implementation upgrade to WeakMap in 2014
 
 var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/,
-	rmultiDash = /([A-Z])/g;
+	rmultiDash = /[A-Z]/g;
 
 function dataAttr( elem, key, data ) {
+	var name;
 
 	// If nothing was found internally, try to fetch any
 	// data from the HTML5 data-* attribute
 	if ( data === undefined && elem.nodeType === 1 ) {
-
-		var name = "data-" + key.replace( rmultiDash, "-$1" ).toLowerCase();
-
+		name = "data-" + key.replace( rmultiDash, "-$&" ).toLowerCase();
 		data = elem.getAttribute( name );
 
 		if ( typeof data === "string" ) {
@@ -31,249 +40,35 @@ function dataAttr( elem, key, data ) {
 			} catch ( e ) {}
 
 			// Make sure we set the data so it isn't changed later
-			jQuery.data( elem, key, data );
-
+			dataUser.set( elem, key, data );
 		} else {
 			data = undefined;
 		}
 	}
-
 	return data;
 }
 
-// checks a cache object for emptiness
-function isEmptyDataObject( obj ) {
-	var name;
-	for ( name in obj ) {
-
-		// if the public data object is empty, the private is still empty
-		if ( name === "data" && jQuery.isEmptyObject( obj[ name ] ) ) {
-			continue;
-		}
-		if ( name !== "toJSON" ) {
-			return false;
-		}
-	}
-
-	return true;
-}
-
-function internalData( elem, name, data, pvt /* Internal Use Only */ ) {
-	if ( !acceptData( elem ) ) {
-		return;
-	}
-
-	var ret, thisCache,
-		internalKey = jQuery.expando,
-
-		// We have to handle DOM nodes and JS objects differently because IE6-7
-		// can't GC object references properly across the DOM-JS boundary
-		isNode = elem.nodeType,
-
-		// Only DOM nodes need the global jQuery cache; JS object data is
-		// attached directly to the object so GC can occur automatically
-		cache = isNode ? jQuery.cache : elem,
-
-		// Only defining an ID for JS objects if its cache already exists allows
-		// the code to shortcut on the same path as a DOM node with no cache
-		id = isNode ? elem[ internalKey ] : elem[ internalKey ] && internalKey;
-
-	// Avoid doing any more work than we need to when trying to get data on an
-	// object that has no data at all
-	if ( ( !id || !cache[ id ] || ( !pvt && !cache[ id ].data ) ) &&
-		data === undefined && typeof name === "string" ) {
-		return;
-	}
-
-	if ( !id ) {
-
-		// Only DOM nodes need a new unique ID for each element since their data
-		// ends up in the global cache
-		if ( isNode ) {
-			id = elem[ internalKey ] = deletedIds.pop() || jQuery.guid++;
-		} else {
-			id = internalKey;
-		}
-	}
-
-	if ( !cache[ id ] ) {
-
-		// Avoid exposing jQuery metadata on plain JS objects when the object
-		// is serialized using JSON.stringify
-		cache[ id ] = isNode ? {} : { toJSON: jQuery.noop };
-	}
-
-	// An object can be passed to jQuery.data instead of a key/value pair; this gets
-	// shallow copied over onto the existing cache
-	if ( typeof name === "object" || typeof name === "function" ) {
-		if ( pvt ) {
-			cache[ id ] = jQuery.extend( cache[ id ], name );
-		} else {
-			cache[ id ].data = jQuery.extend( cache[ id ].data, name );
-		}
-	}
-
-	thisCache = cache[ id ];
-
-	// jQuery data() is stored in a separate object inside the object's internal data
-	// cache in order to avoid key collisions between internal data and user-defined
-	// data.
-	if ( !pvt ) {
-		if ( !thisCache.data ) {
-			thisCache.data = {};
-		}
-
-		thisCache = thisCache.data;
-	}
-
-	if ( data !== undefined ) {
-		thisCache[ jQuery.camelCase( name ) ] = data;
-	}
-
-	// Check for both converted-to-camel and non-converted data property names
-	// If a data property was specified
-	if ( typeof name === "string" ) {
-
-		// First Try to find as-is property data
-		ret = thisCache[ name ];
-
-		// Test for null|undefined property data
-		if ( ret == null ) {
-
-			// Try to find the camelCased property
-			ret = thisCache[ jQuery.camelCase( name ) ];
-		}
-	} else {
-		ret = thisCache;
-	}
-
-	return ret;
-}
-
-function internalRemoveData( elem, name, pvt ) {
-	if ( !acceptData( elem ) ) {
-		return;
-	}
-
-	var thisCache, i,
-		isNode = elem.nodeType,
-
-		// See jQuery.data for more information
-		cache = isNode ? jQuery.cache : elem,
-		id = isNode ? elem[ jQuery.expando ] : jQuery.expando;
-
-	// If there is already no cache entry for this object, there is no
-	// purpose in continuing
-	if ( !cache[ id ] ) {
-		return;
-	}
-
-	if ( name ) {
-
-		thisCache = pvt ? cache[ id ] : cache[ id ].data;
-
-		if ( thisCache ) {
-
-			// Support array or space separated string names for data keys
-			if ( !jQuery.isArray( name ) ) {
-
-				// try the string as a key before any manipulation
-				if ( name in thisCache ) {
-					name = [ name ];
-				} else {
-
-					// split the camel cased version by spaces unless a key with the spaces exists
-					name = jQuery.camelCase( name );
-					if ( name in thisCache ) {
-						name = [ name ];
-					} else {
-						name = name.split( " " );
-					}
-				}
-			} else {
-
-				// If "name" is an array of keys...
-				// When data is initially created, via ("key", "val") signature,
-				// keys will be converted to camelCase.
-				// Since there is no way to tell _how_ a key was added, remove
-				// both plain key and camelCase key. #12786
-				// This will only penalize the array argument path.
-				name = name.concat( jQuery.map( name, jQuery.camelCase ) );
-			}
-
-			i = name.length;
-			while ( i-- ) {
-				delete thisCache[ name[ i ] ];
-			}
-
-			// If there is no data left in the cache, we want to continue
-			// and let the cache object itself get destroyed
-			if ( pvt ? !isEmptyDataObject( thisCache ) : !jQuery.isEmptyObject( thisCache ) ) {
-				return;
-			}
-		}
-	}
-
-	// See jQuery.data for more information
-	if ( !pvt ) {
-		delete cache[ id ].data;
-
-		// Don't destroy the parent cache unless the internal data object
-		// had been the only thing left in it
-		if ( !isEmptyDataObject( cache[ id ] ) ) {
-			return;
-		}
-	}
-
-	// Destroy the cache
-	if ( isNode ) {
-		jQuery.cleanData( [ elem ], true );
-
-	// Use delete when supported for expandos or `cache` is not a window per isWindow (#10080)
-	/* jshint eqeqeq: false */
-	} else if ( support.deleteExpando || cache != cache.window ) {
-		/* jshint eqeqeq: true */
-		delete cache[ id ];
-
-	// When all else fails, undefined
-	} else {
-		cache[ id ] = undefined;
-	}
-}
-
 jQuery.extend( {
-	cache: {},
-
-	// The following elements (space-suffixed to avoid Object.prototype collisions)
-	// throw uncatchable exceptions if you attempt to set expando properties
-	noData: {
-		"applet ": true,
-		"embed ": true,
-
-		// ...but Flash objects (which have this classid) *can* handle expandos
-		"object ": "clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
-	},
-
 	hasData: function( elem ) {
-		elem = elem.nodeType ? jQuery.cache[ elem[ jQuery.expando ] ] : elem[ jQuery.expando ];
-		return !!elem && !isEmptyDataObject( elem );
+		return dataUser.hasData( elem ) || dataPriv.hasData( elem );
 	},
 
 	data: function( elem, name, data ) {
-		return internalData( elem, name, data );
+		return dataUser.access( elem, name, data );
 	},
 
 	removeData: function( elem, name ) {
-		return internalRemoveData( elem, name );
+		dataUser.remove( elem, name );
 	},
 
-	// For internal use only.
+	// TODO: Now that all calls to _data and _removeData have been replaced
+	// with direct calls to dataPriv methods, these can be deprecated.
 	_data: function( elem, name, data ) {
-		return internalData( elem, name, data, true );
+		return dataPriv.access( elem, name, data );
 	},
 
 	_removeData: function( elem, name ) {
-		return internalRemoveData( elem, name, true );
+		dataPriv.remove( elem, name );
 	}
 } );
 
@@ -283,15 +78,12 @@ jQuery.fn.extend( {
 			elem = this[ 0 ],
 			attrs = elem && elem.attributes;
 
-		// Special expections of .data basically thwart jQuery.access,
-		// so implement the relevant behavior ourselves
-
 		// Gets all values
 		if ( key === undefined ) {
 			if ( this.length ) {
-				data = jQuery.data( elem );
+				data = dataUser.get( elem );
 
-				if ( elem.nodeType === 1 && !jQuery._data( elem, "parsedAttrs" ) ) {
+				if ( elem.nodeType === 1 && !dataPriv.get( elem, "hasDataAttrs" ) ) {
 					i = attrs.length;
 					while ( i-- ) {
 
@@ -305,7 +97,7 @@ jQuery.fn.extend( {
 							}
 						}
 					}
-					jQuery._data( elem, "parsedAttrs", true );
+					dataPriv.set( elem, "hasDataAttrs", true );
 				}
 			}
 
@@ -315,25 +107,78 @@ jQuery.fn.extend( {
 		// Sets multiple values
 		if ( typeof key === "object" ) {
 			return this.each( function() {
-				jQuery.data( this, key );
+				dataUser.set( this, key );
 			} );
 		}
 
-		return arguments.length > 1 ?
+		return access( this, function( value ) {
+			var data, camelKey;
+
+			// The calling jQuery object (element matches) is not empty
+			// (and therefore has an element appears at this[ 0 ]) and the
+			// `value` parameter was not undefined. An empty jQuery object
+			// will result in `undefined` for elem = this[ 0 ] which will
+			// throw an exception if an attempt to read a data cache is made.
+			if ( elem && value === undefined ) {
+
+				// Attempt to get data from the cache
+				// with the key as-is
+				data = dataUser.get( elem, key ) ||
+
+					// Try to find dashed key if it exists (gh-2779)
+					// This is for 2.2.x only
+					dataUser.get( elem, key.replace( rmultiDash, "-$&" ).toLowerCase() );
+
+				if ( data !== undefined ) {
+					return data;
+				}
 
-			// Sets one value
+				camelKey = jQuery.camelCase( key );
+
+				// Attempt to get data from the cache
+				// with the key camelized
+				data = dataUser.get( elem, camelKey );
+				if ( data !== undefined ) {
+					return data;
+				}
+
+				// Attempt to "discover" the data in
+				// HTML5 custom data-* attrs
+				data = dataAttr( elem, camelKey, undefined );
+				if ( data !== undefined ) {
+					return data;
+				}
+
+				// We tried really hard, but the data doesn't exist.
+				return;
+			}
+
+			// Set the data...
+			camelKey = jQuery.camelCase( key );
 			this.each( function() {
-				jQuery.data( this, key, value );
-			} ) :
 
-			// Gets one value
-			// Try to fetch any internally stored data first
-			elem ? dataAttr( elem, key, jQuery.data( elem, key ) ) : undefined;
+				// First, attempt to store a copy or reference of any
+				// data that might've been store with a camelCased key.
+				var data = dataUser.get( this, camelKey );
+
+				// For HTML5 data-* attribute interop, we have to
+				// store property names with dashes in a camelCase form.
+				// This might not apply to all properties...*
+				dataUser.set( this, camelKey, value );
+
+				// *... In the case of properties that might _actually_
+				// have dashes, we need to also store a copy of that
+				// unchanged property.
+				if ( key.indexOf( "-" ) > -1 && data !== undefined ) {
+					dataUser.set( this, key, value );
+				}
+			} );
+		}, null, value, arguments.length > 1, null, true );
 	},
 
 	removeData: function( key ) {
 		return this.each( function() {
-			jQuery.removeData( this, key );
+			dataUser.remove( this, key );
 		} );
 	}
 } );

src/data/var/acceptData.js

-define( [
-	"../../core"
-], function( jQuery ) {
+define( function() {
 
 /**
  * Determines whether an object can have data
  */
-return function( elem ) {
-	var noData = jQuery.noData[ ( elem.nodeName + " " ).toLowerCase() ],
-		nodeType = +elem.nodeType || 1;
+return function( owner ) {
 
-	// Do not set data on non-element DOM nodes because it will not be cleared (#8335).
-	return nodeType !== 1 && nodeType !== 9 ?
-		false :
-
-		// Nodes accept data unless otherwise specified; rejection can be conditional
-		!noData || noData !== true && elem.getAttribute( "classid" ) === noData;
+	// Accepts only:
+	//  - Node
+	//    - Node.ELEMENT_NODE
+	//    - Node.DOCUMENT_NODE
+	//  - Object
+	//    - Any
+	/* jshint -W018 */
+	return owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType );
 };
 
 } );

src/deferred.js

@@ -120,7 +120,6 @@ jQuery.extend( {
 					values[ i ] = arguments.length > 1 ? slice.call( arguments ) : value;
 					if ( values === progressValues ) {
 						deferred.notifyWith( contexts, values );
-
 					} else if ( !( --remaining ) ) {
 						deferred.resolveWith( contexts, values );
 					}
@@ -129,7 +128,7 @@ jQuery.extend( {
 
 			progressValues, progressContexts, resolveContexts;
 
-		// add listeners to Deferred subordinates; treat others as resolved
+		// Add listeners to Deferred subordinates; treat others as resolved
 		if ( length > 1 ) {
 			progressValues = new Array( length );
 			progressContexts = new Array( length );
@@ -146,7 +145,7 @@ jQuery.extend( {
 			}
 		}
 
-		// if we're not waiting on anything, resolve the master
+		// If we're not waiting on anything, resolve the master
 		if ( !remaining ) {
 			deferred.resolveWith( resolveContexts, resolveValues );
 		}

src/deprecated.js

 define( [
-	"./core",
-	"./traversing"
+	"./core"
 ], function( jQuery ) {
 
 jQuery.fn.extend( {
@@ -21,14 +20,13 @@ jQuery.fn.extend( {
 		return arguments.length === 1 ?
 			this.off( selector, "**" ) :
 			this.off( types, selector || "**", fn );
+	},
+	size: function() {
+		return this.length;
 	}
 } );
 
-// The number of elements contained in the matched element set
-jQuery.fn.size = function() {
-	return this.length;
-};
-
 jQuery.fn.andSelf = jQuery.fn.addBack;
 
 } );
+

src/dimensions.js

@@ -7,9 +7,9 @@ define( [
 // Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods
 jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
 	jQuery.each( { padding: "inner" + name, content: type, "": "outer" + name },
-	function( defaultExtra, funcName ) {
+		function( defaultExtra, funcName ) {
 
-		// margin is only for outerHeight, outerWidth
+		// Margin is only for outerHeight, outerWidth
 		jQuery.fn[ funcName ] = function( margin, value ) {
 			var chainable = arguments.length && ( defaultExtra || typeof margin !== "boolean" ),
 				extra = defaultExtra || ( margin === true || value === true ? "margin" : "border" );
@@ -31,8 +31,6 @@ jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
 
 					// Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height],
 					// whichever is greatest
-					// unfortunately, this causes bug #3838 in IE6/8 only,
-					// but there is currently no good, small way to fix it.
 					return Math.max(
 						elem.body[ "scroll" + name ], doc[ "scroll" + name ],
 						elem.body[ "offset" + name ], doc[ "offset" + name ],

src/effects.js

 define( [
 	"./core",
-	"./effects/support",
+	"./var/document",
 	"./var/rcssNum",
-	"./var/rnotwhite",
 	"./css/var/cssExpand",
+	"./var/rnotwhite",
 	"./css/var/isHidden",
 	"./css/adjustCSS",
 	"./css/defaultDisplay",
+	"./data/var/dataPriv",
 
-	"./var/document",
 	"./core/init",
 	"./effects/Tween",
 	"./queue",
 	"./css",
 	"./deferred",
 	"./traversing"
-], function( jQuery, support, rcssNum, rnotwhite,
-	cssExpand, isHidden, adjustCSS, defaultDisplay ) {
+], function( jQuery, document, rcssNum, cssExpand, rnotwhite,
+	isHidden, adjustCSS, defaultDisplay, dataPriv ) {
 
 var
 	fxNow, timerId,
@@ -34,11 +34,11 @@ function createFxNow() {
 // Generate parameters to create a standard animation
 function genFx( type, includeWidth ) {
 	var which,
-		attrs = { height: type },
-		i = 0;
+		i = 0,
+		attrs = { height: type };
 
-	// if we include width, step value is 1 to do all cssExpand values,
-	// if we don't include width, step value is 2 to skip over Left and Right
+	// If we include width, step value is 1 to do all cssExpand values,
+	// otherwise step value is 2 to skip over Left and Right
 	includeWidth = includeWidth ? 1 : 0;
 	for ( ; i < 4 ; i += 2 - includeWidth ) {
 		which = cssExpand[ i ];
@@ -60,7 +60,7 @@ function createTween( value, prop, animation ) {
 	for ( ; index < length; index++ ) {
 		if ( ( tween = collection[ index ].call( animation, prop, value ) ) ) {
 
-			// we're done with this property
+			// We're done with this property
 			return tween;
 		}
 	}
@@ -73,9 +73,9 @@ function defaultPrefilter( elem, props, opts ) {
 		orig = {},
 		style = elem.style,
 		hidden = elem.nodeType && isHidden( elem ),
-		dataShow = jQuery._data( elem, "fxshow" );
+		dataShow = dataPriv.get( elem, "fxshow" );
 
-	// handle queue: false promises
+	// Handle queue: false promises
 	if ( !opts.queue ) {
 		hooks = jQuery._queueHooks( elem, "fx" );
 		if ( hooks.unqueued == null ) {
@@ -91,8 +91,7 @@ function defaultPrefilter( elem, props, opts ) {
 
 		anim.always( function() {
 
-			// doing this makes sure that the complete handler will be called
-			// before this completes
+			// Ensure the complete handler is called before this completes
 			anim.always( function() {
 				hooks.unqueued--;
 				if ( !jQuery.queue( elem, "fx" ).length ) {
@@ -102,11 +101,11 @@ function defaultPrefilter( elem, props, opts ) {
 		} );
 	}
 
-	// height/width overflow pass
+	// Height/width overflow pass
 	if ( elem.nodeType === 1 && ( "height" in props || "width" in props ) ) {
 
 		// Make sure that nothing sneaks out
-		// Record all 3 overflow attributes because IE does not
+		// Record all 3 overflow attributes because IE9-10 do not
 		// change the overflow attribute when overflowX and
 		// overflowY are set to the same value
 		opts.overflow = [ style.overflow, style.overflowX, style.overflowY ];
@@ -117,29 +116,20 @@ function defaultPrefilter( elem, props, opts ) {
 
 		// Test default display if display is currently "none"
 		checkDisplay = display === "none" ?
-			jQuery._data( elem, "olddisplay" ) || defaultDisplay( elem.nodeName ) : display;
+			dataPriv.get( elem, "olddisplay" ) || defaultDisplay( elem.nodeName ) : display;
 
 		if ( checkDisplay === "inline" && jQuery.css( elem, "float" ) === "none" ) {
-
-			// inline-level elements accept inline-block;
-			// block-level elements need to be inline with layout
-			if ( !support.inlineBlockNeedsLayout || defaultDisplay( elem.nodeName ) === "inline" ) {
-				style.display = "inline-block";
-			} else {
-				style.zoom = 1;
-			}
+			style.display = "inline-block";
 		}
 	}
 
 	if ( opts.overflow ) {
 		style.overflow = "hidden";
-		if ( !support.shrinkWrapBlocks() ) {
-			anim.always( function() {
-				style.overflow = opts.overflow[ 0 ];
-				style.overflowX = opts.overflow[ 1 ];
-				style.overflowY = opts.overflow[ 2 ];
-			} );
-		}
+		anim.always( function() {
+			style.overflow = opts.overflow[ 0 ];
+			style.overflowX = opts.overflow[ 1 ];
+			style.overflowY = opts.overflow[ 2 ];
+		} );
 	}
 
 	// show/hide pass
@@ -172,10 +162,10 @@ function defaultPrefilter( elem, props, opts ) {
 				hidden = dataShow.hidden;
 			}
 		} else {
-			dataShow = jQuery._data( elem, "fxshow", {} );
+			dataShow = dataPriv.access( elem, "fxshow", {} );
 		}
 
-		// store state if its toggle - enables .stop().toggle() to "reverse"
+		// Store state if its toggle - enables .stop().toggle() to "reverse"
 		if ( toggle ) {
 			dataShow.hidden = !hidden;
 		}
@@ -188,7 +178,8 @@ function defaultPrefilter( elem, props, opts ) {
 		}
 		anim.done( function() {
 			var prop;
-			jQuery._removeData( elem, "fxshow" );
+
+			dataPriv.remove( elem, "fxshow" );
 			for ( prop in orig ) {
 				jQuery.style( elem, prop, orig[ prop ] );
 			}
@@ -234,8 +225,8 @@ function propFilter( props, specialEasing ) {
 			value = hooks.expand( value );
 			delete props[ name ];
 
-			// not quite $.extend, this wont overwrite keys already present.
-			// also - reusing 'index' from above because we have the correct "name"
+			// Not quite $.extend, this won't overwrite existing keys.
+			// Reusing 'index' because we have the correct "name"
 			for ( index in value ) {
 				if ( !( index in props ) ) {
 					props[ index ] = value[ index ];
@@ -255,7 +246,7 @@ function Animation( elem, properties, options ) {
 		length = Animation.prefilters.length,
 		deferred = jQuery.Deferred().always( function() {
 
-			// don't match elem in the :animated selector
+			// Don't match elem in the :animated selector
 			delete tick.elem;
 		} ),
 		tick = function() {
@@ -306,7 +297,7 @@ function Animation( elem, properties, options ) {
 			stop: function( gotoEnd ) {
 				var index = 0,
 
-					// if we are going to the end, we want to run all the tweens
+					// If we are going to the end, we want to run all the tweens
 					// otherwise we skip this part
 					length = gotoEnd ? animation.tweens.length : 0;
 				if ( stopped ) {
@@ -317,8 +308,7 @@ function Animation( elem, properties, options ) {
 					animation.tweens[ index ].run( 1 );
 				}
 
-				// resolve when we played the last frame
-				// otherwise, reject
+				// Resolve when we played the last frame; otherwise, reject
 				if ( gotoEnd ) {
 					deferred.notifyWith( elem, [ animation, 1, 0 ] );
 					deferred.resolveWith( elem, [ animation, gotoEnd ] );
@@ -365,7 +355,6 @@ function Animation( elem, properties, options ) {
 }
 
 jQuery.Animation = jQuery.extend( Animation, {
-
 	tweeners: {
 		"*": [ function( prop, value ) {
 			var tween = this.createTween( prop, value );
@@ -412,11 +401,11 @@ jQuery.speed = function( speed, easing, fn ) {
 		easing: fn && easing || easing && !jQuery.isFunction( easing ) && easing
 	};
 
-	opt.duration = jQuery.fx.off ? 0 : typeof opt.duration === "number" ? opt.duration :
-		opt.duration in jQuery.fx.speeds ?
+	opt.duration = jQuery.fx.off ? 0 : typeof opt.duration === "number" ?
+		opt.duration : opt.duration in jQuery.fx.speeds ?
 			jQuery.fx.speeds[ opt.duration ] : jQuery.fx.speeds._default;
 
-	// normalize opt.queue - true/undefined/null -> "fx"
+	// Normalize opt.queue - true/undefined/null -> "fx"
 	if ( opt.queue == null || opt.queue === true ) {
 		opt.queue = "fx";
 	}
@@ -440,10 +429,10 @@ jQuery.speed = function( speed, easing, fn ) {
 jQuery.fn.extend( {
 	fadeTo: function( speed, to, easing, callback ) {
 
-		// show any hidden elements after setting opacity to 0
+		// Show any hidden elements after setting opacity to 0
 		return this.filter( isHidden ).css( "opacity", 0 ).show()
 
-			// animate to the value specified
+			// Animate to the value specified
 			.end().animate( { opacity: to }, speed, easing, callback );
 	},
 	animate: function( prop, speed, easing, callback ) {
@@ -455,7 +444,7 @@ jQuery.fn.extend( {
 				var anim = Animation( this, jQuery.extend( {}, prop ), optall );
 
 				// Empty animations, or finishing resolves immediately
-				if ( empty || jQuery._data( this, "finish" ) ) {
+				if ( empty || dataPriv.get( this, "finish" ) ) {
 					anim.stop( true );
 				}
 			};
@@ -485,7 +474,7 @@ jQuery.fn.extend( {
 			var dequeue = true,
 				index = type != null && type + "queueHooks",
 				timers = jQuery.timers,
-				data = jQuery._data( this );
+				data = dataPriv.get( this );
 
 			if ( index ) {
 				if ( data[ index ] && data[ index ].stop ) {
@@ -509,9 +498,9 @@ jQuery.fn.extend( {
 				}
 			}
 
-			// start the next in the queue if the last step wasn't forced
-			// timers currently will call their complete callbacks, which will dequeue
-			// but only if they were gotoEnd
+			// Start the next in the queue if the last step wasn't forced.
+			// Timers currently will call their complete callbacks, which
+			// will dequeue but only if they were gotoEnd.
 			if ( dequeue || !gotoEnd ) {
 				jQuery.dequeue( this, type );
 			}
@@ -523,23 +512,23 @@ jQuery.fn.extend( {
 		}
 		return this.each( function() {
 			var index,
-				data = jQuery._data( this ),
+				data = dataPriv.get( this ),
 				queue = data[ type + "queue" ],
 				hooks = data[ type + "queueHooks" ],
 				timers = jQuery.timers,
 				length = queue ? queue.length : 0;
 
-			// enable finishing flag on private data
+			// Enable finishing flag on private data
 			data.finish = true;
 
-			// empty the queue first
+			// Empty the queue first
 			jQuery.queue( this, type, [] );
 
 			if ( hooks && hooks.stop ) {
 				hooks.stop.call( this, true );
 			}
 
-			// look for any active animations, and finish them
+			// Look for any active animations, and finish them
 			for ( index = timers.length; index--; ) {
 				if ( timers[ index ].elem === this && timers[ index ].queue === type ) {
 					timers[ index ].anim.stop( true );
@@ -547,14 +536,14 @@ jQuery.fn.extend( {
 				}
 			}
 
-			// look for any animations in the old queue and finish them
+			// Look for any animations in the old queue and finish them
 			for ( index = 0; index < length; index++ ) {
 				if ( queue[ index ] && queue[ index ].finish ) {
 					queue[ index ].finish.call( this );
 				}
 			}
 
-			// turn off finishing flag
+			// Turn off finishing flag
 			delete data.finish;
 		} );
 	}
@@ -586,8 +575,8 @@ jQuery.each( {
 jQuery.timers = [];
 jQuery.fx.tick = function() {
 	var timer,
-		timers = jQuery.timers,
-		i = 0;
+		i = 0,
+		timers = jQuery.timers;
 
 	fxNow = jQuery.now();
 
@@ -616,7 +605,6 @@ jQuery.fx.timer = function( timer ) {
 };
 
 jQuery.fx.interval = 13;
-
 jQuery.fx.start = function() {
 	if ( !timerId ) {
 		timerId = window.setInterval( jQuery.fx.tick, jQuery.fx.interval );
@@ -625,6 +613,7 @@ jQuery.fx.start = function() {
 
 jQuery.fx.stop = function() {
 	window.clearInterval( timerId );
+
 	timerId = null;
 };
 

src/effects/Tween.js

@@ -66,10 +66,10 @@ Tween.propHooks = {
 				return tween.elem[ tween.prop ];
 			}
 
-			// passing an empty string as a 3rd parameter to .css will automatically
-			// attempt a parseFloat and fallback to a string if the parse fails
-			// so, simple values such as "10px" are parsed to Float.
-			// complex values such as "rotate(1rad)" are returned as is.
+			// Passing an empty string as a 3rd parameter to .css will automatically
+			// attempt a parseFloat and fallback to a string if the parse fails.
+			// Simple values such as "10px" are parsed to Float;
+			// complex values such as "rotate(1rad)" are returned as-is.
 			result = jQuery.css( tween.elem, tween.prop, "" );
 
 			// Empty strings, null, undefined and "auto" are converted to 0.
@@ -77,8 +77,9 @@ Tween.propHooks = {
 		},
 		set: function( tween ) {
 
-			// use step hook for back compat - use cssHook if its there - use .style if its
-			// available and use plain properties where available
+			// Use step hook for back compat.
+			// Use cssHook if its there.
+			// Use .style if available and use plain properties where available.
 			if ( jQuery.fx.step[ tween.prop ] ) {
 				jQuery.fx.step[ tween.prop ]( tween );
 			} else if ( tween.elem.nodeType === 1 &&
@@ -92,9 +93,8 @@ Tween.propHooks = {
 	}
 };
 
-// Support: IE <=9
+// Support: IE9
 // Panic based approach to setting things on disconnected nodes
-
 Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {
 	set: function( tween ) {
 		if ( tween.elem.nodeType && tween.elem.parentNode ) {

src/event.js

@@ -2,20 +2,16 @@ define( [
 	"./core",
 	"./var/document",
 	"./var/rnotwhite",
-	"./var/hasOwn",
 	"./var/slice",
-	"./event/support",
-	"./data/var/acceptData",
+	"./data/var/dataPriv",
 
 	"./core/init",
-	"./data",
 	"./selector"
-], function( jQuery, document, rnotwhite, hasOwn, slice, support, acceptData ) {
+], function( jQuery, document, rnotwhite, slice, dataPriv ) {
 
-var rformElems = /^(?:input|select|textarea)$/i,
+var
 	rkeyEvent = /^key/,
 	rmouseEvent = /^(?:mouse|pointer|contextmenu|drag|drop)|click/,
-	rfocusMorph = /^(?:focusinfocus|focusoutblur)$/,
 	rtypenamespace = /^([^.]*)(?:\.(.+)|)/;
 
 function returnTrue() {
@@ -104,10 +100,11 @@ jQuery.event = {
 	global: {},
 
 	add: function( elem, types, handler, data, selector ) {
-		var tmp, events, t, handleObjIn,
-			special, eventHandle, handleObj,
-			handlers, type, namespaces, origType,
-			elemData = jQuery._data( elem );
+
+		var handleObjIn, eventHandle, tmp,
+			events, t, handleObj,
+			special, handlers, type, namespaces, origType,
+			elemData = dataPriv.get( elem );
 
 		// Don't attach events to noData or text/comment nodes (but allow plain objects)
 		if ( !elemData ) {
@@ -135,15 +132,9 @@ jQuery.event = {
 
 				// Discard the second event of a jQuery.event.trigger() and
 				// when an event is called after a page has unloaded
-				return typeof jQuery !== "undefined" &&
-					( !e || jQuery.event.triggered !== e.type ) ?
-					jQuery.event.dispatch.apply( eventHandle.elem, arguments ) :
-					undefined;
+				return typeof jQuery !== "undefined" && jQuery.event.triggered !== e.type ?
+					jQuery.event.dispatch.apply( elem, arguments ) : undefined;
 			};
-
-			// Add elem as a property of the handle fn to prevent a memory leak
-			// with IE non-native events
-			eventHandle.elem = elem;
 		}
 
 		// Handle multiple events separated by a space
@@ -185,16 +176,12 @@ jQuery.event = {
 				handlers = events[ type ] = [];
 				handlers.delegateCount = 0;
 
-				// Only use addEventListener/attachEvent if the special events handler returns false
+				// Only use addEventListener if the special events handler returns false
 				if ( !special.setup ||
 					special.setup.call( elem, data, namespaces, eventHandle ) === false ) {
 
-					// Bind the global event handler to the element
 					if ( elem.addEventListener ) {
-						elem.addEventListener( type, eventHandle, false );
-
-					} else if ( elem.attachEvent ) {
-						elem.attachEvent( "on" + type, eventHandle );
+						elem.addEventListener( type, eventHandle );
 					}
 				}
 			}
@@ -218,17 +205,15 @@ jQuery.event = {
 			jQuery.event.global[ type ] = true;
 		}
 
-		// Nullify elem to prevent memory leaks in IE
-		elem = null;
 	},
 
 	// Detach an event or set of events from an element
 	remove: function( elem, types, handler, selector, mappedTypes ) {
-		var j, handleObj, tmp,
-			origCount, t, events,
-			special, handlers, type,
-			namespaces, origType,
-			elemData = jQuery.hasData( elem ) && jQuery._data( elem );
+
+		var j, origCount, tmp,
+			events, t, handleObj,
+			special, handlers, type, namespaces, origType,
+			elemData = dataPriv.hasData( elem ) && dataPriv.get( elem );
 
 		if ( !elemData || !( events = elemData.events ) ) {
 			return;
@@ -290,161 +275,12 @@ jQuery.event = {
 			}
 		}
 
-		// Remove the expando if it's no longer used
+		// Remove data and the expando if it's no longer used
 		if ( jQuery.isEmptyObject( events ) ) {
-			delete elemData.handle;
-
-			// removeData also checks for emptiness and clears the expando if empty
-			// so use it instead of delete
-			jQuery._removeData( elem, "events" );
+			dataPriv.remove( elem, "handle events" );
 		}
 	},
 
-	trigger: function( event, data, elem, onlyHandlers ) {
-		var handle, ontype, cur,
-			bubbleType, special, tmp, i,
-			eventPath = [ elem || document ],
-			type = hasOwn.call( event, "type" ) ? event.type : event,
-			namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split( "." ) : [];
-
-		cur = tmp = elem = elem || document;
-
-		// Don't do events on text and comment nodes
-		if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
-			return;
-		}
-
-		// focus/blur morphs to focusin/out; ensure we're not firing them right now
-		if ( rfocusMorph.test( type + jQuery.event.triggered ) ) {
-			return;
-		}
-
-		if ( type.indexOf( "." ) > -1 ) {
-
-			// Namespaced trigger; create a regexp to match event type in handle()
-			namespaces = type.split( "." );
-			type = namespaces.shift();
-			namespaces.sort();
-		}
-		ontype = type.indexOf( ":" ) < 0 && "on" + type;
-
-		// Caller can pass in a jQuery.Event object, Object, or just an event type string
-		event = event[ jQuery.expando ] ?
-			event :
-			new jQuery.Event( type, typeof event === "object" && event );
-
-		// Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)
-		event.isTrigger = onlyHandlers ? 2 : 3;
-		event.namespace = namespaces.join( "." );
-		event.rnamespace = event.namespace ?
-			new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ) :
-			null;
-
-		// Clean up the event in case it is being reused
-		event.result = undefined;
-		if ( !event.target ) {
-			event.target = elem;
-		}
-
-		// Clone any incoming data and prepend the event, creating the handler arg list
-		data = data == null ?
-			[ event ] :
-			jQuery.makeArray( data, [ event ] );
-
-		// Allow special events to draw outside the lines
-		special = jQuery.event.special[ type ] || {};
-		if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) {
-			return;
-		}
-
-		// Determine event propagation path in advance, per W3C events spec (#9951)
-		// Bubble up to document, then to window; watch for a global ownerDocument var (#9724)
-		if ( !onlyHandlers && !special.noBubble && !jQuery.isWindow( elem ) ) {
-
-			bubbleType = special.delegateType || type;
-			if ( !rfocusMorph.test( bubbleType + type ) ) {
-				cur = cur.parentNode;
-			}
-			for ( ; cur; cur = cur.parentNode ) {
-				eventPath.push( cur );
-				tmp = cur;
-			}
-
-			// Only add window if we got to document (e.g., not plain obj or detached DOM)
-			if ( tmp === ( elem.ownerDocument || document ) ) {
-				eventPath.push( tmp.defaultView || tmp.parentWindow || window );
-			}
-		}
-
-		// Fire handlers on the event path
-		i = 0;
-		while ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) {
-
-			event.type = i > 1 ?
-				bubbleType :
-				special.bindType || type;
-
-			// jQuery handler
-			handle = ( jQuery._data( cur, "events" ) || {} )[ event.type ] &&
-				jQuery._data( cur, "handle" );
-
-			if ( handle ) {
-				handle.apply( cur, data );
-			}
-
-			// Native handler
-			handle = ontype && cur[ ontype ];
-			if ( handle && handle.apply && acceptData( cur ) ) {
-				event.result = handle.apply( cur, data );
-				if ( event.result === false ) {
-					event.preventDefault();
-				}
-			}
-		}
-		event.type = type;
-
-		// If nobody prevented the default action, do it now
-		if ( !onlyHandlers && !event.isDefaultPrevented() ) {
-
-			if (
-				( !special._default ||
-				 special._default.apply( eventPath.pop(), data ) === false
-				) && acceptData( elem )
-			) {
-
-				// Call a native DOM method on the target with the same name name as the event.
-				// Can't use an .isFunction() check here because IE6/7 fails that test.
-				// Don't do default actions on window, that's where global variables be (#6170)
-				if ( ontype && elem[ type ] && !jQuery.isWindow( elem ) ) {
-
-					// Don't re-trigger an onFOO event when we call its FOO() method
-					tmp = elem[ ontype ];
-
-					if ( tmp ) {
-						elem[ ontype ] = null;
-					}
-
-					// Prevent re-triggering of the same event, since we already bubbled it above
-					jQuery.event.triggered = type;
-					try {
-						elem[ type ]();
-					} catch ( e ) {
-
-						// IE<9 dies on focus/blur to hidden element (#1486,#12518)
-						// only reproducible on winXP IE8 native, not IE9 in IE8 mode
-					}
-					jQuery.event.triggered = undefined;
-
-					if ( tmp ) {
-						elem[ ontype ] = tmp;
-					}
-				}
-			}
-		}
-
-		return event.result;
-	},
-
 	dispatch: function( event ) {
 
 		// Make a writable jQuery.Event from the native event object
@@ -453,7 +289,7 @@ jQuery.event = {
 		var i, j, ret, matched, handleObj,
 			handlerQueue = [],
 			args = slice.call( arguments ),
-			handlers = ( jQuery._data( this, "events" ) || {} )[ event.type ] || [],
+			handlers = ( dataPriv.get( this, "events" ) || {} )[ event.type ] || [],
 			special = jQuery.event.special[ event.type ] || {};
 
 		// Use the fix-ed jQuery.Event rather than the (read-only) native event
@@ -520,9 +356,7 @@ jQuery.event = {
 		if ( delegateCount && cur.nodeType &&
 			( event.type !== "click" || isNaN( event.button ) || event.button < 1 ) ) {
 
-			/* jshint eqeqeq: false */
-			for ( ; cur != this; cur = cur.parentNode || this ) {
-				/* jshint eqeqeq: true */
+			for ( ; cur !== this; cur = cur.parentNode || this ) {
 
 				// Don't check non-elements (#13208)
 				// Don't process clicks on disabled elements (#6911, #8165, #11382, #11764)
@@ -558,52 +392,6 @@ jQuery.event = {
 		return handlerQueue;
 	},
 
-	fix: function( event ) {
-		if ( event[ jQuery.expando ] ) {
-			return event;
-		}
-
-		// Create a writable copy of the event object and normalize some properties
-		var i, prop, copy,
-			type = event.type,
-			originalEvent = event,
-			fixHook = this.fixHooks[ type ];
-
-		if ( !fixHook ) {
-			this.fixHooks[ type ] = fixHook =
-				rmouseEvent.test( type ) ? this.mouseHooks :
-				rkeyEvent.test( type ) ? this.keyHooks :
-				{};
-		}
-		copy = fixHook.props ? this.props.concat( fixHook.props ) : this.props;
-
-		event = new jQuery.Event( originalEvent );
-
-		i = copy.length;
-		while ( i-- ) {
-			prop = copy[ i ];
-			event[ prop ] = originalEvent[ prop ];
-		}
-
-		// Support: IE<9
-		// Fix target property (#1925)
-		if ( !event.target ) {
-			event.target = originalEvent.srcElement || document;
-		}
-
-		// Support: Safari 6-8+
-		// Target should not be a text node (#504, #13143)
-		if ( event.target.nodeType === 3 ) {
-			event.target = event.target.parentNode;
-		}
-
-		// Support: IE<9
-		// For mouse/key events, metaKey==false if it's undefined (#3368, #11328)
-		event.metaKey = !!event.metaKey;
-
-		return fixHook.filter ? fixHook.filter( event, originalEvent ) : event;
-	},
-
 	// Includes some event props shared by KeyEvent and MouseEvent
 	props: ( "altKey bubbles cancelable ctrlKey currentTarget detail eventPhase " +
 		"metaKey relatedTarget shiftKey target timeStamp view which" ).split( " " ),
@@ -624,12 +412,11 @@ jQuery.event = {
 	},
 
 	mouseHooks: {
-		props: ( "button buttons clientX clientY fromElement offsetX offsetY " +
-			"pageX pageY screenX screenY toElement" ).split( " " ),
+		props: ( "button buttons clientX clientY offsetX offsetY pageX pageY " +
+			"screenX screenY toElement" ).split( " " ),
 		filter: function( event, original ) {
-			var body, eventDoc, doc,
-				button = original.button,
-				fromElement = original.fromElement;
+			var eventDoc, doc, body,
+				button = original.button;
 
 			// Calculate pageX/Y if missing and clientX/Y available
 			if ( event.pageX == null && original.clientX != null ) {
@@ -645,13 +432,6 @@ jQuery.event = {
 					( doc && doc.clientTop  || body && body.clientTop  || 0 );
 			}
 
-			// Add relatedTarget, if necessary
-			if ( !event.relatedTarget && fromElement ) {
-				event.relatedTarget = fromElement === event.target ?
-					original.toElement :
-					fromElement;
-			}
-
 			// Add which for click: 1 === left; 2 === middle; 3 === right
 			// Note: button is not normalized, so don't use it
 			if ( !event.which && button !== undefined ) {
@@ -662,6 +442,48 @@ jQuery.event = {
 		}
 	},
 
+	fix: function( event ) {
+		if ( event[ jQuery.expando ] ) {
+			return event;
+		}
+
+		// Create a writable copy of the event object and normalize some properties
+		var i, prop, copy,
+			type = event.type,
+			originalEvent = event,
+			fixHook = this.fixHooks[ type ];
+
+		if ( !fixHook ) {
+			this.fixHooks[ type ] = fixHook =
+				rmouseEvent.test( type ) ? this.mouseHooks :
+				rkeyEvent.test( type ) ? this.keyHooks :
+				{};
+		}
+		copy = fixHook.props ? this.props.concat( fixHook.props ) : this.props;
+
+		event = new jQuery.Event( originalEvent );
+
+		i = copy.length;
+		while ( i-- ) {
+			prop = copy[ i ];
+			event[ prop ] = originalEvent[ prop ];
+		}
+
+		// Support: Cordova 2.5 (WebKit) (#13255)
+		// All events should have a target; Cordova deviceready doesn't
+		if ( !event.target ) {
+			event.target = document;
+		}
+
+		// Support: Safari 6.0+, Chrome<28
+		// Target should not be a text node (#504, #13143)
+		if ( event.target.nodeType === 3 ) {
+			event.target = event.target.parentNode;
+		}
+
+		return fixHook.filter ? fixHook.filter( event, originalEvent ) : event;
+	},
+
 	special: {
 		load: {
 
@@ -673,15 +495,8 @@ jQuery.event = {
 			// Fire native event if possible so blur/focus sequence is correct
 			trigger: function() {
 				if ( this !== safeActiveElement() && this.focus ) {
-					try {
-						this.focus();
-						return false;
-					} catch ( e ) {
-
-						// Support: IE<9
-						// If we error on focus to hidden element (#1486, #12518),
-						// let .trigger() run the handlers
-					}
+					this.focus();
+					return false;
 				}
 			},
 			delegateType: "focusin"
@@ -699,7 +514,7 @@ jQuery.event = {
 
 			// For checkbox, fire native event so checked state will be right
 			trigger: function() {
-				if ( jQuery.nodeName( this, "input" ) && this.type === "checkbox" && this.click ) {
+				if ( this.type === "checkbox" && this.click && jQuery.nodeName( this, "input" ) ) {
 					this.click();
 					return false;
 				}
@@ -721,59 +536,16 @@ jQuery.event = {
 				}
 			}
 		}
-	},
-
-	// Piggyback on a donor event to simulate a different one
-	simulate: function( type, elem, event ) {
-		var e = jQuery.extend(
-			new jQuery.Event(),
-			event,
-			{
-				type: type,
-				isSimulated: true
-
-				// Previously, `originalEvent: {}` was set here, so stopPropagation call
-				// would not be triggered on donor event, since in our own
-				// jQuery.event.stopPropagation function we had a check for existence of
-				// originalEvent.stopPropagation method, so, consequently it would be a noop.
-				//
-				// Guard for simulated events was moved to jQuery.event.stopPropagation function
-				// since `originalEvent` should point to the original event for the
-				// constancy with other events and for more focused logic
-			}
-		);
-
-		jQuery.event.trigger( e, null, elem );
-
-		if ( e.isDefaultPrevented() ) {
-			event.preventDefault();
-		}
 	}
 };
 
-jQuery.removeEvent = document.removeEventListener ?
-	function( elem, type, handle ) {
-
-		// This "if" is needed for plain objects
-		if ( elem.removeEventListener ) {
-			elem.removeEventListener( type, handle );
-		}
-	} :
-	function( elem, type, handle ) {
-		var name = "on" + type;
-
-		if ( elem.detachEvent ) {
-
-			// #8545, #7054, preventing memory leaks for custom events in IE6-8
-			// detachEvent needed property on element, by name of that event,
-			// to properly expose it to GC
-			if ( typeof elem[ name ] === "undefined" ) {
-				elem[ name ] = null;
-			}
+jQuery.removeEvent = function( elem, type, handle ) {
 
-			elem.detachEvent( name, handle );
-		}
-	};
+	// This "if" is needed for plain objects
+	if ( elem.removeEventListener ) {
+		elem.removeEventListener( type, handle );
+	}
+};
 
 jQuery.Event = function( src, props ) {
 
@@ -792,7 +564,7 @@ jQuery.Event = function( src, props ) {
 		this.isDefaultPrevented = src.defaultPrevented ||
 				src.defaultPrevented === undefined &&
 
-				// Support: IE < 9, Android < 4.0
+				// Support: Android<4.0
 				src.returnValue === false ?
 			returnTrue :
 			returnFalse;
@@ -826,18 +598,9 @@ jQuery.Event.prototype = {
 		var e = this.originalEvent;
 
 		this.isDefaultPrevented = returnTrue;
-		if ( !e ) {
-			return;
-		}
 
-		// If preventDefault exists, run it on the original event
-		if ( e.preventDefault ) {
+		if ( e ) {
 			e.preventDefault();
-
-		// Support: IE
-		// Otherwise set the returnValue property of the original event to false
-		} else {
-			e.returnValue = false;
 		}
 	},
 	stopPropagation: function() {
@@ -845,25 +608,16 @@ jQuery.Event.prototype = {
 
 		this.isPropagationStopped = returnTrue;
 
-		if ( !e || this.isSimulated ) {
-			return;
-		}
-
-		// If stopPropagation exists, run it on the original event
-		if ( e.stopPropagation ) {
+		if ( e ) {
 			e.stopPropagation();
 		}
-
-		// Support: IE
-		// Set the cancelBubble property of the original event to true
-		e.cancelBubble = true;
 	},
 	stopImmediatePropagation: function() {
 		var e = this.originalEvent;
 
 		this.isImmediatePropagationStopped = returnTrue;
 
-		if ( e && e.stopImmediatePropagation ) {
+		if ( e ) {
 			e.stopImmediatePropagation();
 		}
 
@@ -907,173 +661,7 @@ jQuery.each( {
 	};
 } );
 
-// IE submit delegation
-if ( !support.submit ) {
-
-	jQuery.event.special.submit = {
-		setup: function() {
-
-			// Only need this for delegated form submit events
-			if ( jQuery.nodeName( this, "form" ) ) {
-				return false;
-			}
-
-			// Lazy-add a submit handler when a descendant form may potentially be submitted
-			jQuery.event.add( this, "click._submit keypress._submit", function( e ) {
-
-				// Node name check avoids a VML-related crash in IE (#9807)
-				var elem = e.target,
-					form = jQuery.nodeName( elem, "input" ) || jQuery.nodeName( elem, "button" ) ?
-
-						// Support: IE <=8
-						// We use jQuery.prop instead of elem.form
-						// to allow fixing the IE8 delegated submit issue (gh-2332)
-						// by 3rd party polyfills/workarounds.
-						jQuery.prop( elem, "form" ) :
-						undefined;
-
-				if ( form && !jQuery._data( form, "submit" ) ) {
-					jQuery.event.add( form, "submit._submit", function( event ) {
-						event._submitBubble = true;
-					} );
-					jQuery._data( form, "submit", true );
-				}
-			} );
-
-			// return undefined since we don't need an event listener
-		},
-
-		postDispatch: function( event ) {
-
-			// If form was submitted by the user, bubble the event up the tree
-			if ( event._submitBubble ) {
-				delete event._submitBubble;
-				if ( this.parentNode && !event.isTrigger ) {
-					jQuery.event.simulate( "submit", this.parentNode, event );
-				}
-			}
-		},
-
-		teardown: function() {
-
-			// Only need this for delegated form submit events
-			if ( jQuery.nodeName( this, "form" ) ) {
-				return false;
-			}
-
-			// Remove delegated handlers; cleanData eventually reaps submit handlers attached above
-			jQuery.event.remove( this, "._submit" );
-		}
-	};
-}
-
-// IE change delegation and checkbox/radio fix
-if ( !support.change ) {
-
-	jQuery.event.special.change = {
-
-		setup: function() {
-
-			if ( rformElems.test( this.nodeName ) ) {
-
-				// IE doesn't fire change on a check/radio until blur; trigger it on click
-				// after a propertychange. Eat the blur-change in special.change.handle.
-				// This still fires onchange a second time for check/radio after blur.
-				if ( this.type === "checkbox" || this.type === "radio" ) {
-					jQuery.event.add( this, "propertychange._change", function( event ) {
-						if ( event.originalEvent.propertyName === "checked" ) {
-							this._justChanged = true;
-						}
-					} );
-					jQuery.event.add( this, "click._change", function( event ) {
-						if ( this._justChanged && !event.isTrigger ) {
-							this._justChanged = false;
-						}
-
-						// Allow triggered, simulated change events (#11500)
-						jQuery.event.simulate( "change", this, event );
-					} );
-				}
-				return false;
-			}
-
-			// Delegated event; lazy-add a change handler on descendant inputs
-			jQuery.event.add( this, "beforeactivate._change", function( e ) {
-				var elem = e.target;
-
-				if ( rformElems.test( elem.nodeName ) && !jQuery._data( elem, "change" ) ) {
-					jQuery.event.add( elem, "change._change", function( event ) {
-						if ( this.parentNode && !event.isSimulated && !event.isTrigger ) {
-							jQuery.event.simulate( "change", this.parentNode, event );
-						}
-					} );
-					jQuery._data( elem, "change", true );
-				}
-			} );
-		},
-
-		handle: function( event ) {
-			var elem = event.target;
-
-			// Swallow native change events from checkbox/radio, we already triggered them above
-			if ( this !== elem || event.isSimulated || event.isTrigger ||
-				( elem.type !== "radio" && elem.type !== "checkbox" ) ) {
-
-				return event.handleObj.handler.apply( this, arguments );
-			}
-		},
-
-		teardown: function() {
-			jQuery.event.remove( this, "._change" );
-
-			return !rformElems.test( this.nodeName );
-		}
-	};
-}
-
-// Support: Firefox
-// Firefox doesn't have focus(in | out) events
-// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787
-//
-// Support: Chrome, Safari
-// focus(in | out) events fire after focus & blur events,
-// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order
-// Related ticket - https://code.google.com/p/chromium/issues/detail?id=449857
-if ( !support.focusin ) {
-	jQuery.each( { focus: "focusin", blur: "focusout" }, function( orig, fix ) {
-
-		// Attach a single capturing handler on the document while someone wants focusin/focusout
-		var handler = function( event ) {
-			jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ) );
-		};
-
-		jQuery.event.special[ fix ] = {
-			setup: function() {
-				var doc = this.ownerDocument || this,
-					attaches = jQuery._data( doc, fix );
-
-				if ( !attaches ) {
-					doc.addEventListener( orig, handler, true );
-				}
-				jQuery._data( doc, fix, ( attaches || 0 ) + 1 );
-			},
-			teardown: function() {
-				var doc = this.ownerDocument || this,
-					attaches = jQuery._data( doc, fix ) - 1;
-
-				if ( !attaches ) {
-					doc.removeEventListener( orig, handler, true );
-					jQuery._removeData( doc, fix );
-				} else {
-					jQuery._data( doc, fix, attaches );
-				}
-			}
-		};
-	} );
-}
-
 jQuery.fn.extend( {
-
 	on: function( types, selector, data, fn ) {
 		return on( this, types, selector, data, fn );
 	},
@@ -1115,18 +703,6 @@ jQuery.fn.extend( {
 		return this.each( function() {
 			jQuery.event.remove( this, types, fn, selector );
 		} );
-	},
-
-	trigger: function( type, data ) {
-		return this.each( function() {
-			jQuery.event.trigger( type, data, this );
-		} );
-	},
-	triggerHandler: function( type, data ) {
-		var elem = this[ 0 ];
-		if ( elem ) {
-			return jQuery.event.trigger( type, data, elem, true );
-		}
 	}
 } );
 

src/event/alias.js

 define( [
 	"../core",
-	"../event"
+
+	"../event",
+	"./trigger"
 ], function( jQuery ) {
 
 jQuery.each( ( "blur focus focusin focusout load resize scroll unload click dblclick " +

src/event/support.js

 define( [
-	"../var/document",
 	"../var/support"
-], function( document, support ) {
+], function( support ) {
 
-( function() {
-	var i, eventName,
-		div = document.createElement( "div" );
-
-	// Support: IE<9 (lack submit/change bubble), Firefox (lack focus(in | out) events)
-	for ( i in { submit: true, change: true, focusin: true } ) {
-		eventName = "on" + i;
-
-		if ( !( support[ i ] = eventName in window ) ) {
-
-			// Beware of CSP restrictions (https://developer.mozilla.org/en/Security/CSP)
-			div.setAttribute( eventName, "t" );
-			support[ i ] = div.attributes[ eventName ].expando === false;
-		}
-	}
-
-	// Null elements to avoid leaks in IE.
-	div = null;
-} )();
+support.focusin = "onfocusin" in window;
 
 return support;
 

src/exports/global.js

@@ -18,8 +18,8 @@ jQuery.noConflict = function( deep ) {
 	return jQuery;
 };
 
-// Expose jQuery and $ identifiers, even in
-// AMD (#7102#comment:10, https://github.com/jquery/jquery/pull/557)
+// Expose jQuery and $ identifiers, even in AMD
+// (#7102#comment:10, https://github.com/jquery/jquery/pull/557)
 // and CommonJS for browser emulators (#13566)
 if ( !noGlobal ) {
 	window.jQuery = window.$ = jQuery;

src/jquery.js

@@ -5,13 +5,13 @@ define( [
 	"./callbacks",
 	"./deferred",
 	"./core/ready",
-	"./support",
 	"./data",
 	"./queue",
 	"./queue/delay",
 	"./attributes",
 	"./event",
 	"./event/alias",
+	"./event/focusin",
 	"./manipulation",
 	"./manipulation/_evalUrl",
 	"./wrap",

src/manipulation.js

 define( [
 	"./core",
-	"./var/document",
 	"./var/concat",
 	"./var/push",
-	"./var/deletedIds",
 	"./core/access",
-
 	"./manipulation/var/rcheckableType",
 	"./manipulation/var/rtagName",
 	"./manipulation/var/rscriptType",
-	"./manipulation/var/rleadingWhitespace",
-	"./manipulation/var/nodeNames",
-	"./manipulation/createSafeFragment",
 	"./manipulation/wrapMap",
 	"./manipulation/getAll",
 	"./manipulation/setGlobalEval",
 	"./manipulation/buildFragment",
 	"./manipulation/support",
+
+	"./data/var/dataPriv",
+	"./data/var/dataUser",
 	"./data/var/acceptData",
 
 	"./core/init",
 	"./traversing",
 	"./selector",
 	"./event"
-], function( jQuery, document, concat, push, deletedIds, access,
-	rcheckableType, rtagName, rscriptType, rleadingWhitespace, nodeNames,
-	createSafeFragment, wrapMap, getAll, setGlobalEval,
-	buildFragment, support, acceptData ) {
+], function( jQuery, concat, push, access,
+	rcheckableType, rtagName, rscriptType,
+	wrapMap, getAll, setGlobalEval, buildFragment, support,
+	dataPriv, dataUser, acceptData ) {
 
-var rinlinejQuery = / jQuery\d+="(?:null|\d+)"/g,
-	rnoshimcache = new RegExp( "<(?:" + nodeNames + ")[\\s/>]", "i" ),
+var
 	rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:-]+)[^>]*)\/>/gi,
 
 	// Support: IE 10-11, Edge 10240+
@@ -40,11 +36,8 @@ var rinlinejQuery = / jQuery\d+="(?:null|\d+)"/g,
 	// checked="checked" or checked
 	rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i,
 	rscriptTypeMasked = /^true\/(.*)/,
-	rcleanScript = /^\s*<!(?:\[CDATA\[|--)|(?:\]\]|--)>\s*$/g,
-	safeFragment = createSafeFragment( document ),
-	fragmentDiv = safeFragment.appendChild( document.createElement( "div" ) );
+	rcleanScript = /^\s*<!(?:\[CDATA\[|--)|(?:\]\]|--)>\s*$/g;
 
-// Support: IE<8
 // Manipulating tables requires a tbody
 function manipulationTarget( elem, content ) {
 	return jQuery.nodeName( elem, "table" ) &&
@@ -57,109 +50,64 @@ function manipulationTarget( elem, content ) {
 
 // Replace/restore the type attribute of script elements for safe DOM manipulation
 function disableScript( elem ) {
-	elem.type = ( jQuery.find.attr( elem, "type" ) !== null ) + "/" + elem.type;
+	elem.type = ( elem.getAttribute( "type" ) !== null ) + "/" + elem.type;
 	return elem;
 }
 function restoreScript( elem ) {
 	var match = rscriptTypeMasked.exec( elem.type );
+
 	if ( match ) {
 		elem.type = match[ 1 ];
 	} else {
 		elem.removeAttribute( "type" );
 	}
+
 	return elem;
 }
 
 function cloneCopyEvent( src, dest ) {
-	if ( dest.nodeType !== 1 || !jQuery.hasData( src ) ) {
-		return;
-	}
-
-	var type, i, l,
-		oldData = jQuery._data( src ),
-		curData = jQuery._data( dest, oldData ),
-		events = oldData.events;
-
-	if ( events ) {
-		delete curData.handle;
-		curData.events = {};
-
-		for ( type in events ) {
-			for ( i = 0, l = events[ type ].length; i < l; i++ ) {
-				jQuery.event.add( dest, type, events[ type ][ i ] );
-			}
-		}
-	}
-
-	// make the cloned public data object a copy from the original
-	if ( curData.data ) {
-		curData.data = jQuery.extend( {}, curData.data );
-	}
-}
-
-function fixCloneNodeIssues( src, dest ) {
-	var nodeName, e, data;
+	var i, l, type, pdataOld, pdataCur, udataOld, udataCur, events;
 
-	// We do not need to do anything for non-Elements
 	if ( dest.nodeType !== 1 ) {
 		return;
 	}
 
-	nodeName = dest.nodeName.toLowerCase();
+	// 1. Copy private data: events, handlers, etc.
+	if ( dataPriv.hasData( src ) ) {
+		pdataOld = dataPriv.access( src );
+		pdataCur = dataPriv.set( dest, pdataOld );
+		events = pdataOld.events;
 
-	// IE6-8 copies events bound via attachEvent when using cloneNode.
-	if ( !support.noCloneEvent && dest[ jQuery.expando ] ) {
-		data = jQuery._data( dest );
+		if ( events ) {
+			delete pdataCur.handle;
+			pdataCur.events = {};
 
-		for ( e in data.events ) {
-			jQuery.removeEvent( dest, e, data.handle );
+			for ( type in events ) {
+				for ( i = 0, l = events[ type ].length; i < l; i++ ) {
+					jQuery.event.add( dest, type, events[ type ][ i ] );
+				}
+			}
 		}
-
-		// Event data gets referenced instead of copied if the expando gets copied too
-		dest.removeAttribute( jQuery.expando );
 	}
 
-	// IE blanks contents when cloning scripts, and tries to evaluate newly-set text
-	if ( nodeName === "script" && dest.text !== src.text ) {
-		disableScript( dest ).text = src.text;
-		restoreScript( dest );
-
-	// IE6-10 improperly clones children of object elements using classid.
-	// IE10 throws NoModificationAllowedError if parent is null, #12132.
-	} else if ( nodeName === "object" ) {
-		if ( dest.parentNode ) {
-			dest.outerHTML = src.outerHTML;
-		}
-
-		// This path appears unavoidable for IE9. When cloning an object
-		// element in IE9, the outerHTML strategy above is not sufficient.
-		// If the src has innerHTML and the destination does not,
-		// copy the src.innerHTML into the dest.innerHTML. #10324
-		if ( support.html5Clone && ( src.innerHTML && !jQuery.trim( dest.innerHTML ) ) ) {
-			dest.innerHTML = src.innerHTML;
-		}
-
-	} else if ( nodeName === "input" && rcheckableType.test( src.type ) ) {
-
-		// IE6-8 fails to persist the checked state of a cloned checkbox
-		// or radio button. Worse, IE6-7 fail to give the cloned element
-		// a checked appearance if the defaultChecked value isn't also set
+	// 2. Copy user data
+	if ( dataUser.hasData( src ) ) {
+		udataOld = dataUser.access( src );
+		udataCur = jQuery.extend( {}, udataOld );
 
-		dest.defaultChecked = dest.checked = src.checked;
+		dataUser.set( dest, udataCur );
+	}
+}
 
-		// IE6-7 get confused and end up setting the value of a cloned
-		// checkbox/radio button to an empty string instead of "on"
-		if ( dest.value !== src.value ) {
-			dest.value = src.value;
-		}
+// Fix IE bugs, see support tests
+function fixInput( src, dest ) {
+	var nodeName = dest.nodeName.toLowerCase();
 
-	// IE6-8 fails to return the selected option to the default selected
-	// state when cloning options
-	} else if ( nodeName === "option" ) {
-		dest.defaultSelected = dest.selected = src.defaultSelected;
+	// Fails to persist the checked state of a cloned checkbox or radio button.
+	if ( nodeName === "input" && rcheckableType.test( src.type ) ) {
+		dest.checked = src.checked;
 
-	// IE6-8 fails to set the defaultValue to the correct value when
-	// cloning other types of input fields
+	// Fails to return the selected option to the default selected state when cloning options
 	} else if ( nodeName === "input" || nodeName === "textarea" ) {
 		dest.defaultValue = src.defaultValue;
 	}
@@ -170,8 +118,7 @@ function domManip( collection, args, callback, ignored ) {
 	// Flatten any nested arrays
 	args = concat.apply( [], args );
 
-	var first, node, hasScripts,
-		scripts, doc, fragment,
+	var fragment, first, scripts, hasScripts, node, doc,
 		i = 0,
 		l = collection.length,
 		iNoClone = l - 1,
@@ -235,7 +182,7 @@ function domManip( collection, args, callback, ignored ) {
 				for ( i = 0; i < hasScripts; i++ ) {
 					node = scripts[ i ];
 					if ( rscriptType.test( node.type || "" ) &&
-						!jQuery._data( node, "globalEval" ) &&
+						!dataPriv.access( node, "globalEval" ) &&
 						jQuery.contains( doc, node ) ) {
 
 						if ( node.src ) {
@@ -245,17 +192,11 @@ function domManip( collection, args, callback, ignored ) {
 								jQuery._evalUrl( node.src );
 							}
 						} else {
-							jQuery.globalEval(
-								( node.text || node.textContent || node.innerHTML || "" )
-									.replace( rcleanScript, "" )
-							);
+							jQuery.globalEval( node.textContent.replace( rcleanScript, "" ) );
 						}
 					}
 				}
 			}
-
-			// Fix #11809: Avoid leaking memory
-			fragment = first = null;
 		}
 	}
 
@@ -264,11 +205,10 @@ function domManip( collection, args, callback, ignored ) {
 
 function remove( elem, selector, keepData ) {
 	var node,
-		elems = selector ? jQuery.filter( selector, elem ) : elem,
+		nodes = selector ? jQuery.filter( selector, elem ) : elem,
 		i = 0;
 
-	for ( ; ( node = elems[ i ] ) != null; i++ ) {
-
+	for ( ; ( node = nodes[ i ] ) != null; i++ ) {
 		if ( !keepData && node.nodeType === 1 ) {
 			jQuery.cleanData( getAll( node ) );
 		}
@@ -290,34 +230,20 @@ jQuery.extend( {
 	},
 
 	clone: function( elem, dataAndEvents, deepDataAndEvents ) {
-		var destElements, node, clone, i, srcElements,
+		var i, l, srcElements, destElements,
+			clone = elem.cloneNode( true ),
 			inPage = jQuery.contains( elem.ownerDocument, elem );
 
-		if ( support.html5Clone || jQuery.isXMLDoc( elem ) ||
-			!rnoshimcache.test( "<" + elem.nodeName + ">" ) ) {
-
-			clone = elem.cloneNode( true );
-
-		// IE<=8 does not properly clone detached, unknown element nodes
-		} else {
-			fragmentDiv.innerHTML = elem.outerHTML;
-			fragmentDiv.removeChild( clone = fragmentDiv.firstChild );
-		}
-
-		if ( ( !support.noCloneEvent || !support.noCloneChecked ) &&
-				( elem.nodeType === 1 || elem.nodeType === 11 ) && !jQuery.isXMLDoc( elem ) ) {
+		// Fix IE cloning issues
+		if ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) &&
+				!jQuery.isXMLDoc( elem ) ) {
 
 			// We eschew Sizzle here for performance reasons: http://jsperf.com/getall-vs-sizzle/2
 			destElements = getAll( clone );
 			srcElements = getAll( elem );
 
-			// Fix all IE cloning issues
-			for ( i = 0; ( node = srcElements[ i ] ) != null; ++i ) {
-
-				// Ensure that the destination node is not null; Fixes #9587
-				if ( destElements[ i ] ) {
-					fixCloneNodeIssues( node, destElements[ i ] );
-				}
+			for ( i = 0, l = srcElements.length; i < l; i++ ) {
+				fixInput( srcElements[ i ], destElements[ i ] );
 			}
 		}
 
@@ -327,8 +253,8 @@ jQuery.extend( {
 				srcElements = srcElements || getAll( elem );
 				destElements = destElements || getAll( clone );
 
-				for ( i = 0; ( node = srcElements[ i ] ) != null; i++ ) {
-					cloneCopyEvent( node, destElements[ i ] );
+				for ( i = 0, l = srcElements.length; i < l; i++ ) {
+					cloneCopyEvent( srcElements[ i ], destElements[ i ] );
 				}
 			} else {
 				cloneCopyEvent( elem, clone );
@@ -341,27 +267,18 @@ jQuery.extend( {
 			setGlobalEval( destElements, !inPage && getAll( elem, "script" ) );
 		}
 
-		destElements = srcElements = node = null;
-
 		// Return the cloned set
 		return clone;
 	},
 
-	cleanData: function( elems, /* internal */ forceAcceptData ) {
-		var elem, type, id, data,
-			i = 0,
-			internalKey = jQuery.expando,
-			cache = jQuery.cache,
-			attributes = support.attributes,
-			special = jQuery.event.special;
-
-		for ( ; ( elem = elems[ i ] ) != null; i++ ) {
-			if ( forceAcceptData || acceptData( elem ) ) {
-
-				id = elem[ internalKey ];
-				data = id && cache[ id ];
+	cleanData: function( elems ) {
+		var data, elem, type,
+			special = jQuery.event.special,
+			i = 0;
 
-				if ( data ) {
+		for ( ; ( elem = elems[ i ] ) !== undefined; i++ ) {
+			if ( acceptData( elem ) ) {
+				if ( ( data = elem[ dataPriv.expando ] ) ) {
 					if ( data.events ) {
 						for ( type in data.events ) {
 							if ( special[ type ] ) {
@@ -374,27 +291,15 @@ jQuery.extend( {
 						}
 					}
 
-					// Remove cache only if it was not already removed by jQuery.event.remove
-					if ( cache[ id ] ) {
-
-						delete cache[ id ];
-
-						// Support: IE<9
-						// IE does not allow us to delete expando properties from nodes
-						// IE creates expando attributes along with the property
-						// IE does not have a removeAttribute function on Document nodes
-						if ( !attributes && typeof elem.removeAttribute !== "undefined" ) {
-							elem.removeAttribute( internalKey );
-
-						// Webkit & Blink performance suffers when deleting properties
-						// from DOM nodes, so set to undefined instead
-						// https://code.google.com/p/chromium/issues/detail?id=378607
-						} else {
-							elem[ internalKey ] = undefined;
-						}
+					// Support: Chrome <= 35-45+
+					// Assign undefined instead of using delete, see Data#remove
+					elem[ dataPriv.expando ] = undefined;
+				}
+				if ( elem[ dataUser.expando ] ) {
 
-						deletedIds.push( id );
-					}
+					// Support: Chrome <= 35-45+
+					// Assign undefined instead of using delete, see Data#remove
+					elem[ dataUser.expando ] = undefined;
 				}
 			}
 		}
@@ -418,9 +323,11 @@ jQuery.fn.extend( {
 		return access( this, function( value ) {
 			return value === undefined ?
 				jQuery.text( this ) :
-				this.empty().append(
-					( this[ 0 ] && this[ 0 ].ownerDocument || document ).createTextNode( value )
-				);
+				this.empty().each( function() {
+					if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
+						this.textContent = value;
+					}
+				} );
 		}, null, value, arguments.length );
 	},
 
@@ -463,21 +370,13 @@ jQuery.fn.extend( {
 			i = 0;
 
 		for ( ; ( elem = this[ i ] ) != null; i++ ) {
-
-			// Remove element nodes and prevent memory leaks
 			if ( elem.nodeType === 1 ) {
-				jQuery.cleanData( getAll( elem, false ) );
-			}
 
-			// Remove any remaining nodes
-			while ( elem.firstChild ) {
-				elem.removeChild( elem.firstChild );
-			}
+				// Prevent memory leaks
+				jQuery.cleanData( getAll( elem, false ) );
 
-			// If this is a select, ensure that it displays empty (#12336)
-			// Support: IE<9
-			if ( elem.options && jQuery.nodeName( elem, "select" ) ) {
-				elem.options.length = 0;
+				// Remove any remaining nodes
+				elem.textContent = "";
 			}
 		}
 
@@ -499,25 +398,21 @@ jQuery.fn.extend( {
 				i = 0,
 				l = this.length;
 
-			if ( value === undefined ) {
-				return elem.nodeType === 1 ?
-					elem.innerHTML.replace( rinlinejQuery, "" ) :
-					undefined;
+			if ( value === undefined && elem.nodeType === 1 ) {
+				return elem.innerHTML;
 			}
 
 			// See if we can take a shortcut and just use innerHTML
 			if ( typeof value === "string" && !rnoInnerhtml.test( value ) &&
-				( support.htmlSerialize || !rnoshimcache.test( value )  ) &&
-				( support.leadingWhitespace || !rleadingWhitespace.test( value ) ) &&
 				!wrapMap[ ( rtagName.exec( value ) || [ "", "" ] )[ 1 ].toLowerCase() ] ) {
 
 				value = jQuery.htmlPrefilter( value );
 
 				try {
 					for ( ; i < l; i++ ) {
+						elem = this[ i ] || {};
 
 						// Remove element nodes and prevent memory leaks
-						elem = this[ i ] || {};
 						if ( elem.nodeType === 1 ) {
 							jQuery.cleanData( getAll( elem, false ) );
 							elem.innerHTML = value;
@@ -564,16 +459,17 @@ jQuery.each( {
 }, function( name, original ) {
 	jQuery.fn[ name ] = function( selector ) {
 		var elems,
-			i = 0,
 			ret = [],
 			insert = jQuery( selector ),
-			last = insert.length - 1;
+			last = insert.length - 1,
+			i = 0;
 
 		for ( ; i <= last; i++ ) {
 			elems = i === last ? this : this.clone( true );
 			jQuery( insert[ i ] )[ original ]( elems );
 
-			// Modern browsers can apply jQuery collections as arrays, but oldIE needs a .get()
+			// Support: QtWebKit
+			// .get() because push.apply(_, arraylike) throws
 			push.apply( ret, elems.get() );
 		}
 

src/manipulation/_evalUrl.js

@@ -9,7 +9,6 @@ jQuery._evalUrl = function( url ) {
 		// Make this explicit, since user can override this through ajaxSetup (#11264)
 		type: "GET",
 		dataType: "script",
-		cache: true,
 		async: false,
 		global: false,
 		"throws": true

src/manipulation/buildFragment.js

 define( [
 	"../core",
-	"./var/rcheckableType",
 	"./var/rtagName",
 	"./var/rscriptType",
-	"./var/rleadingWhitespace",
-	"./createSafeFragment",
 	"./wrapMap",
 	"./getAll",
-	"./setGlobalEval",
-	"./support"
-], function( jQuery, rcheckableType, rtagName, rscriptType, rleadingWhitespace,
-	createSafeFragment, wrapMap, getAll, setGlobalEval, support ) {
+	"./setGlobalEval"
+], function( jQuery, rtagName, rscriptType, wrapMap, getAll, setGlobalEval ) {
 
-var rhtml = /<|&#?\w+;/,
-	rtbody = /<tbody/i;
-
-function fixDefaultChecked( elem ) {
-	if ( rcheckableType.test( elem.type ) ) {
-		elem.defaultChecked = elem.checked;
-	}
-}
+var rhtml = /<|&#?\w+;/;
 
 function buildFragment( elems, context, scripts, selection, ignored ) {
-	var j, elem, contains,
-		tmp, tag, tbody, wrap,
-		l = elems.length,
-
-		// Ensure a safe fragment
-		safe = createSafeFragment( context ),
-
+	var elem, tmp, tag, wrap, contains, j,
+		fragment = context.createDocumentFragment(),
 		nodes = [],
-		i = 0;
+		i = 0,
+		l = elems.length;
 
 	for ( ; i < l; i++ ) {
 		elem = elems[ i ];
@@ -39,6 +23,9 @@ function buildFragment( elems, context, scripts, selection, ignored ) {
 
 			// Add nodes directly
 			if ( jQuery.type( elem ) === "object" ) {
+
+				// Support: Android<4.1, PhantomJS<2
+				// push.apply(_, arraylike) throws on ancient WebKit
 				jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem );
 
 			// Convert non-html into a text node
@@ -47,12 +34,11 @@ function buildFragment( elems, context, scripts, selection, ignored ) {
 
 			// Convert html into DOM nodes
 			} else {
-				tmp = tmp || safe.appendChild( context.createElement( "div" ) );
+				tmp = tmp || fragment.appendChild( context.createElement( "div" ) );
 
 				// Deserialize a standard representation
 				tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase();
 				wrap = wrapMap[ tag ] || wrapMap._default;
-
 				tmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ];
 
 				// Descend through wrappers to the right content
@@ -61,59 +47,21 @@ function buildFragment( elems, context, scripts, selection, ignored ) {
 					tmp = tmp.lastChild;
 				}
 
-				// Manually add leading whitespace removed by IE
-				if ( !support.leadingWhitespace && rleadingWhitespace.test( elem ) ) {
-					nodes.push( context.createTextNode( rleadingWhitespace.exec( elem )[ 0 ] ) );
-				}
-
-				// Remove IE's autoinserted <tbody> from table fragments
-				if ( !support.tbody ) {
-
-					// String was a <table>, *may* have spurious <tbody>
-					elem = tag === "table" && !rtbody.test( elem ) ?
-						tmp.firstChild :
-
-						// String was a bare <thead> or <tfoot>
-						wrap[ 1 ] === "<table>" && !rtbody.test( elem ) ?
-							tmp :
-							0;
-
-					j = elem && elem.childNodes.length;
-					while ( j-- ) {
-						if ( jQuery.nodeName( ( tbody = elem.childNodes[ j ] ), "tbody" ) &&
-							!tbody.childNodes.length ) {
-
-							elem.removeChild( tbody );
-						}
-					}
-				}
-
+				// Support: Android<4.1, PhantomJS<2
+				// push.apply(_, arraylike) throws on ancient WebKit
 				jQuery.merge( nodes, tmp.childNodes );
 
-				// Fix #12392 for WebKit and IE > 9
-				tmp.textContent = "";
-
-				// Fix #12392 for oldIE
-				while ( tmp.firstChild ) {
-					tmp.removeChild( tmp.firstChild );
-				}
+				// Remember the top-level container
+				tmp = fragment.firstChild;
 
-				// Remember the top-level container for proper cleanup
-				tmp = safe.lastChild;
+				// Ensure the created nodes are orphaned (#12392)
+				tmp.textContent = "";
 			}
 		}
 	}
 
-	// Fix #11356: Clear elements from fragment
-	if ( tmp ) {
-		safe.removeChild( tmp );
-	}
-
-	// Reset defaultChecked for any radios and checkboxes
-	// about to be appended to the DOM in IE 6/7 (#8060)
-	if ( !support.appendChecked ) {
-		jQuery.grep( getAll( nodes, "input" ), fixDefaultChecked );
-	}
+	// Remove wrapper from fragment
+	fragment.textContent = "";
 
 	i = 0;
 	while ( ( elem = nodes[ i++ ] ) ) {
@@ -123,14 +71,13 @@ function buildFragment( elems, context, scripts, selection, ignored ) {
 			if ( ignored ) {
 				ignored.push( elem );
 			}
-
 			continue;
 		}
 
 		contains = jQuery.contains( elem.ownerDocument, elem );
 
 		// Append to fragment
-		tmp = getAll( safe.appendChild( elem ), "script" );
+		tmp = getAll( fragment.appendChild( elem ), "script" );
 
 		// Preserve script evaluation history
 		if ( contains ) {
@@ -148,9 +95,7 @@ function buildFragment( elems, context, scripts, selection, ignored ) {
 		}
 	}
 
-	tmp = null;
-
-	return safe;
+	return fragment;
 }
 
 return buildFragment;

src/manipulation/getAll.js

@@ -3,30 +3,18 @@ define( [
 ], function( jQuery ) {
 
 function getAll( context, tag ) {
-	var elems, elem,
-		i = 0,
-		found = typeof context.getElementsByTagName !== "undefined" ?
+
+	// Support: IE9-11+
+	// Use typeof to avoid zero-argument method invocation on host objects (#15151)
+	var ret = typeof context.getElementsByTagName !== "undefined" ?
 			context.getElementsByTagName( tag || "*" ) :
 			typeof context.querySelectorAll !== "undefined" ?
 				context.querySelectorAll( tag || "*" ) :
-				undefined;
-
-	if ( !found ) {
-		for ( found = [], elems = context.childNodes || context;
-			( elem = elems[ i ] ) != null;
-			i++
-		) {
-			if ( !tag || jQuery.nodeName( elem, tag ) ) {
-				found.push( elem );
-			} else {
-				jQuery.merge( found, getAll( elem, tag ) );
-			}
-		}
-	}
+			[];
 
 	return tag === undefined || tag && jQuery.nodeName( context, tag ) ?
-		jQuery.merge( [ context ], found ) :
-		found;
+		jQuery.merge( [ context ], ret ) :
+		ret;
 }
 
 return getAll;

src/manipulation/setGlobalEval.js

 define( [
-	"../core"
-], function( jQuery ) {
+	"../data/var/dataPriv"
+], function( dataPriv ) {
 
 // Mark scripts as having already been evaluated
 function setGlobalEval( elems, refElements ) {
-	var elem,
-		i = 0;
-	for ( ; ( elem = elems[ i ] ) != null; i++ ) {
-		jQuery._data(
-			elem,
+	var i = 0,
+		l = elems.length;
+
+	for ( ; i < l; i++ ) {
+		dataPriv.set(
+			elems[ i ],
 			"globalEval",
-			!refElements || jQuery._data( refElements[ i ], "globalEval" )
+			!refElements || dataPriv.get( refElements[ i ], "globalEval" )
 		);
 	}
 }

src/manipulation/support.js

 define( [
-	"../core",
 	"../var/document",
 	"../var/support"
-], function( jQuery, document, support ) {
+], function( document, support ) {
 
 ( function() {
-	var div = document.createElement( "div" ),
-		fragment = document.createDocumentFragment(),
+	var fragment = document.createDocumentFragment(),
+		div = fragment.appendChild( document.createElement( "div" ) ),
 		input = document.createElement( "input" );
 
-	// Setup
-	div.innerHTML = "  <link/><table></table><a href='/a'>a</a><input type='checkbox'/>";
-
-	// IE strips leading whitespace when .innerHTML is used
-	support.leadingWhitespace = div.firstChild.nodeType === 3;
-
-	// Make sure that tbody elements aren't automatically inserted
-	// IE will insert them into empty tables
-	support.tbody = !div.getElementsByTagName( "tbody" ).length;
-
-	// Make sure that link elements get serialized correctly by innerHTML
-	// This requires a wrapper element in IE
-	support.htmlSerialize = !!div.getElementsByTagName( "link" ).length;
-
-	// Makes sure cloning an html5 element does not cause problems
-	// Where outerHTML is undefined, this still works
-	support.html5Clone =
-		document.createElement( "nav" ).cloneNode( true ).outerHTML !== "<:nav></:nav>";
-
-	// Check if a disconnected checkbox will retain its checked
-	// value of true after appended to the DOM (IE6/7)
-	input.type = "checkbox";
-	input.checked = true;
-	fragment.appendChild( input );
-	support.appendChecked = input.checked;
-
-	// Make sure textarea (and checkbox) defaultValue is properly cloned
-	// Support: IE6-IE11+
-	div.innerHTML = "<textarea>x</textarea>";
-	support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue;
-
-	// #11217 - WebKit loses check when the name is after the checked attribute
-	fragment.appendChild( div );
-
+	// Support: Android 4.0-4.3, Safari<=5.1
+	// Check state lost if the name is set (#11217)
 	// Support: Windows Web Apps (WWA)
 	// `name` and `type` must use .setAttribute for WWA (#14901)
-	input = document.createElement( "input" );
 	input.setAttribute( "type", "radio" );
 	input.setAttribute( "checked", "checked" );
 	input.setAttribute( "name", "t" );
 
 	div.appendChild( input );
 
-	// Support: Safari 5.1, iOS 5.1, Android 4.x, Android 2.3
-	// old WebKit doesn't clone checked state correctly in fragments
+	// Support: Safari<=5.1, Android<4.2
+	// Older WebKit doesn't clone checked state correctly in fragments
 	support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked;
 
-	// Support: IE<9
-	// Cloned elements keep attachEvent handlers, we use addEventListener on IE9+
-	support.noCloneEvent = !!div.addEventListener;
-
-	// Support: IE<9
-	// Since attributes and properties are the same in IE,
-	// cleanData must set properties to undefined rather than use removeAttribute
-	div[ jQuery.expando ] = 1;
-	support.attributes = !div.getAttribute( jQuery.expando );
+	// Support: IE<=11+
+	// Make sure textarea (and checkbox) defaultValue is properly cloned
+	div.innerHTML = "<textarea>x</textarea>";
+	support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue;
 } )();
 
 return support;

src/manipulation/wrapMap.js

-define( [
-	"./support"
-], function( support ) {
+define( function() {
 
 // We have to close these tags to support XHTML (#13200)
 var wrapMap = {
+
+	// Support: IE9
 	option: [ 1, "<select multiple='multiple'>", "</select>" ],
-	legend: [ 1, "<fieldset>", "</fieldset>" ],
-	area: [ 1, "<map>", "</map>" ],
 
-	// Support: IE8
-	param: [ 1, "<object>", "</object>" ],
+	// XHTML parsers do not magically insert elements in the
+	// same way that tag soup parsers do. So we cannot shorten
+	// this by omitting <tbody> or other required elements.
 	thead: [ 1, "<table>", "</table>" ],
+	col: [ 2, "<table><colgroup>", "</colgroup></table>" ],
 	tr: [ 2, "<table><tbody>", "</tbody></table>" ],
-	col: [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ],
 	td: [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ],
 
-	// IE6-8 can't serialize link, script, style, or any html5 (NoScope) tags,
-	// unless wrapped in a div with non-breaking characters in front of it.
-	_default: support.htmlSerialize ? [ 0, "", "" ] : [ 1, "X<div>", "</div>" ]
+	_default: [ 0, "", "" ]
 };
 
-// Support: IE8-IE9
+// Support: IE9
 wrapMap.optgroup = wrapMap.option;
 
 wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;

src/offset.js

@@ -13,18 +13,11 @@ define( [
 	"./selector" // contains
 ], function( jQuery, access, document, documentElement, rnumnonpx, curCSS, addGetHookIf, support ) {
 
-// BuildExclude
-curCSS = curCSS.curCSS;
-
 /**
  * Gets a window from an element
  */
 function getWindow( elem ) {
-	return jQuery.isWindow( elem ) ?
-		elem :
-		elem.nodeType === 9 ?
-			elem.defaultView || elem.parentWindow :
-			false;
+	return jQuery.isWindow( elem ) ? elem : elem.nodeType === 9 && elem.defaultView;
 }
 
 jQuery.offset = {
@@ -34,7 +27,7 @@ jQuery.offset = {
 			curElem = jQuery( elem ),
 			props = {};
 
-		// set position first, in-case top/left are set even on static elem
+		// Set position first, in-case top/left are set even on static elem
 		if ( position === "static" ) {
 			elem.style.position = "relative";
 		}
@@ -43,14 +36,15 @@ jQuery.offset = {
 		curCSSTop = jQuery.css( elem, "top" );
 		curCSSLeft = jQuery.css( elem, "left" );
 		calculatePosition = ( position === "absolute" || position === "fixed" ) &&
-			jQuery.inArray( "auto", [ curCSSTop, curCSSLeft ] ) > -1;
+			( curCSSTop + curCSSLeft ).indexOf( "auto" ) > -1;
 
-		// need to be able to calculate position if either top or left
-		// is auto and position is either absolute or fixed
+		// Need to be able to calculate position if either
+		// top or left is auto and position is either absolute or fixed
 		if ( calculatePosition ) {
 			curPosition = curElem.position();
 			curTop = curPosition.top;
 			curLeft = curPosition.left;
+
 		} else {
 			curTop = parseFloat( curCSSTop ) || 0;
 			curLeft = parseFloat( curCSSLeft ) || 0;
@@ -71,6 +65,7 @@ jQuery.offset = {
 
 		if ( "using" in options ) {
 			options.using.call( elem, props );
+
 		} else {
 			curElem.css( props );
 		}
@@ -88,8 +83,8 @@ jQuery.fn.extend( {
 		}
 
 		var docElem, win,
-			box = { top: 0, left: 0 },
 			elem = this[ 0 ],
+			box = { top: 0, left: 0 },
 			doc = elem && elem.ownerDocument;
 
 		if ( !doc ) {
@@ -103,15 +98,11 @@ jQuery.fn.extend( {
 			return box;
 		}
 
-		// If we don't have gBCR, just use 0,0 rather than error
-		// BlackBerry 5, iOS 3 (original iPhone)
-		if ( typeof elem.getBoundingClientRect !== "undefined" ) {
-			box = elem.getBoundingClientRect();
-		}
+		box = elem.getBoundingClientRect();
 		win = getWindow( doc );
 		return {
-			top: box.top  + ( win.pageYOffset || docElem.scrollTop )  - ( docElem.clientTop  || 0 ),
-			left: box.left + ( win.pageXOffset || docElem.scrollLeft ) - ( docElem.clientLeft || 0 )
+			top: box.top + win.pageYOffset - docElem.clientTop,
+			left: box.left + win.pageXOffset - docElem.clientLeft
 		};
 	},
 
@@ -121,15 +112,16 @@ jQuery.fn.extend( {
 		}
 
 		var offsetParent, offset,
-			parentOffset = { top: 0, left: 0 },
-			elem = this[ 0 ];
+			elem = this[ 0 ],
+			parentOffset = { top: 0, left: 0 };
 
 		// Fixed elements are offset from window (parentOffset = {top:0, left: 0},
 		// because it is its only offset parent
 		if ( jQuery.css( elem, "position" ) === "fixed" ) {
 
-			// we assume that getBoundingClientRect is available when computed position is fixed
+			// Assume getBoundingClientRect is there when computed position is fixed
 			offset = elem.getBoundingClientRect();
+
 		} else {
 
 			// Get *real* offsetParent
@@ -142,27 +134,35 @@ jQuery.fn.extend( {
 			}
 
 			// Add offsetParent borders
-			parentOffset.top  += jQuery.css( offsetParent[ 0 ], "borderTopWidth", true );
+			parentOffset.top += jQuery.css( offsetParent[ 0 ], "borderTopWidth", true );
 			parentOffset.left += jQuery.css( offsetParent[ 0 ], "borderLeftWidth", true );
 		}
 
 		// Subtract parent offsets and element margins
-		// note: when an element has margin: auto the offsetLeft and marginLeft
-		// are the same in Safari causing offset.left to incorrectly be 0
 		return {
-			top:  offset.top  - parentOffset.top - jQuery.css( elem, "marginTop", true ),
+			top: offset.top - parentOffset.top - jQuery.css( elem, "marginTop", true ),
 			left: offset.left - parentOffset.left - jQuery.css( elem, "marginLeft", true )
 		};
 	},
 
+	// This method will return documentElement in the following cases:
+	// 1) For the element inside the iframe without offsetParent, this method will return
+	//    documentElement of the parent window
+	// 2) For the hidden or detached element
+	// 3) For body or html element, i.e. in case of the html node - it will return itself
+	//
+	// but those exceptions were never presented as a real life use-cases
+	// and might be considered as more preferable results.
+	//
+	// This logic, however, is not guaranteed and can change at any point in the future
 	offsetParent: function() {
 		return this.map( function() {
 			var offsetParent = this.offsetParent;
 
-			while ( offsetParent && ( !jQuery.nodeName( offsetParent, "html" ) &&
-				jQuery.css( offsetParent, "position" ) === "static" ) ) {
+			while ( offsetParent && jQuery.css( offsetParent, "position" ) === "static" ) {
 				offsetParent = offsetParent.offsetParent;
 			}
+
 			return offsetParent || documentElement;
 		} );
 	}
@@ -170,43 +170,42 @@ jQuery.fn.extend( {
 
 // Create scrollLeft and scrollTop methods
 jQuery.each( { scrollLeft: "pageXOffset", scrollTop: "pageYOffset" }, function( method, prop ) {
-	var top = /Y/.test( prop );
+	var top = "pageYOffset" === prop;
 
 	jQuery.fn[ method ] = function( val ) {
 		return access( this, function( elem, method, val ) {
 			var win = getWindow( elem );
 
 			if ( val === undefined ) {
-				return win ? ( prop in win ) ? win[ prop ] :
-					win.document.documentElement[ method ] :
-					elem[ method ];
+				return win ? win[ prop ] : elem[ method ];
 			}
 
 			if ( win ) {
 				win.scrollTo(
-					!top ? val : jQuery( win ).scrollLeft(),
-					top ? val : jQuery( win ).scrollTop()
+					!top ? val : win.pageXOffset,
+					top ? val : win.pageYOffset
 				);
 
 			} else {
 				elem[ method ] = val;
 			}
-		}, method, val, arguments.length, null );
+		}, method, val, arguments.length );
 	};
 } );
 
 // Support: Safari<7-8+, Chrome<37-44+
 // Add the top/left cssHooks using jQuery.fn.position
 // Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084
-// getComputedStyle returns percent when specified for top/left/bottom/right
-// rather than make the css module depend on the offset module, we just check for it here
+// Blink bug: https://code.google.com/p/chromium/issues/detail?id=229280
+// getComputedStyle returns percent when specified for top/left/bottom/right;
+// rather than make the css module depend on the offset module, just check for it here
 jQuery.each( [ "top", "left" ], function( i, prop ) {
 	jQuery.cssHooks[ prop ] = addGetHookIf( support.pixelPosition,
 		function( elem, computed ) {
 			if ( computed ) {
 				computed = curCSS( elem, prop );
 
-				// if curCSS returns percentage, fallback to offset
+				// If curCSS returns percentage, fallback to offset
 				return rnumnonpx.test( computed ) ?
 					jQuery( elem ).position()[ prop ] + "px" :
 					computed;

src/queue.js

 define( [
 	"./core",
+	"./data/var/dataPriv",
 	"./deferred",
 	"./callbacks"
-], function( jQuery ) {
+], function( jQuery, dataPriv ) {
 
 jQuery.extend( {
 	queue: function( elem, type, data ) {
@@ -10,12 +11,12 @@ jQuery.extend( {
 
 		if ( elem ) {
 			type = ( type || "fx" ) + "queue";
-			queue = jQuery._data( elem, type );
+			queue = dataPriv.get( elem, type );
 
 			// Speed up dequeue by getting out quickly if this is just a lookup
 			if ( data ) {
 				if ( !queue || jQuery.isArray( data ) ) {
-					queue = jQuery._data( elem, type, jQuery.makeArray( data ) );
+					queue = dataPriv.access( elem, type, jQuery.makeArray( data ) );
 				} else {
 					queue.push( data );
 				}
@@ -49,7 +50,7 @@ jQuery.extend( {
 				queue.unshift( "inprogress" );
 			}
 
-			// clear up the last queue stop function
+			// Clear up the last queue stop function
 			delete hooks.stop;
 			fn.call( elem, next, hooks );
 		}
@@ -59,14 +60,12 @@ jQuery.extend( {
 		}
 	},
 
-	// not intended for public consumption - generates a queueHooks object,
-	// or returns the current one
+	// Not public - generate a queueHooks object, or return the current one
 	_queueHooks: function( elem, type ) {
 		var key = type + "queueHooks";
-		return jQuery._data( elem, key ) || jQuery._data( elem, key, {
+		return dataPriv.get( elem, key ) || dataPriv.access( elem, key, {
 			empty: jQuery.Callbacks( "once memory" ).add( function() {
-				jQuery._removeData( elem, type + "queue" );
-				jQuery._removeData( elem, key );
+				dataPriv.remove( elem, [ type + "queue", key ] );
 			} )
 		} );
 	}
@@ -91,7 +90,7 @@ jQuery.fn.extend( {
 			this.each( function() {
 				var queue = jQuery.queue( this, type, data );
 
-				// ensure a hooks for this queue
+				// Ensure a hooks for this queue
 				jQuery._queueHooks( this, type );
 
 				if ( type === "fx" && queue[ 0 ] !== "inprogress" ) {
@@ -129,7 +128,7 @@ jQuery.fn.extend( {
 		type = type || "fx";
 
 		while ( i-- ) {
-			tmp = jQuery._data( elements[ i ], type + "queueHooks" );
+			tmp = dataPriv.get( elements[ i ], type + "queueHooks" );
 			if ( tmp && tmp.empty ) {
 				count++;
 				tmp.empty.add( resolve );

src/serialize.js

@@ -102,7 +102,7 @@ jQuery.fn.extend( {
 		.filter( function() {
 			var type = this.type;
 
-			// Use .is(":disabled") so that fieldset[disabled] works
+			// Use .is( ":disabled" ) so that fieldset[disabled] works
 			return this.name && !jQuery( this ).is( ":disabled" ) &&
 				rsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) &&
 				( this.checked || !rcheckableType.test( type ) );

src/traversing.js

 define( [
 	"./core",
+	"./var/indexOf",
 	"./traversing/var/dir",
 	"./traversing/var/siblings",
 	"./traversing/var/rneedsContext",
 	"./core/init",
 	"./traversing/findFilter",
 	"./selector"
-], function( jQuery, dir, siblings, rneedsContext ) {
+], function( jQuery, indexOf, dir, siblings, rneedsContext ) {
 
 var rparentsprev = /^(?:parents|prev(?:Until|All))/,
 
-	// methods guaranteed to produce a unique set when starting from a unique set
+	// Methods guaranteed to produce a unique set when starting from a unique set
 	guaranteedUnique = {
 		children: true,
 		contents: true,
@@ -20,12 +21,12 @@ var rparentsprev = /^(?:parents|prev(?:Until|All))/,
 
 jQuery.fn.extend( {
 	has: function( target ) {
-		var i,
-			targets = jQuery( target, this ),
-			len = targets.length;
+		var targets = jQuery( target, this ),
+			l = targets.length;
 
 		return this.filter( function() {
-			for ( i = 0; i < len; i++ ) {
+			var i = 0;
+			for ( ; i < l; i++ ) {
 				if ( jQuery.contains( this, targets[ i ] ) ) {
 					return true;
 				}
@@ -62,8 +63,7 @@ jQuery.fn.extend( {
 		return this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched );
 	},
 
-	// Determine the position of an element within
-	// the matched set of elements
+	// Determine the position of an element within the set
 	index: function( elem ) {
 
 		// No argument, return index in parent
@@ -71,16 +71,17 @@ jQuery.fn.extend( {
 			return ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1;
 		}
 
-		// index in selector
+		// Index in selector
 		if ( typeof elem === "string" ) {
-			return jQuery.inArray( this[ 0 ], jQuery( elem ) );
+			return indexOf.call( jQuery( elem ), this[ 0 ] );
 		}
 
 		// Locate the position of the desired element
-		return jQuery.inArray(
+		return indexOf.call( this,
 
 			// If it receives a jQuery object, the first element is used
-			elem.jquery ? elem[ 0 ] : elem, this );
+			elem.jquery ? elem[ 0 ] : elem
+		);
 	},
 
 	add: function( selector, context ) {
@@ -99,10 +100,7 @@ jQuery.fn.extend( {
 } );
 
 function sibling( cur, dir ) {
-	do {
-		cur = cur[ dir ];
-	} while ( cur && cur.nodeType !== 1 );
-
+	while ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {}
 	return cur;
 }
 
@@ -142,36 +140,34 @@ jQuery.each( {
 		return siblings( elem.firstChild );
 	},
 	contents: function( elem ) {
-		return jQuery.nodeName( elem, "iframe" ) ?
-			elem.contentDocument || elem.contentWindow.document :
-			jQuery.merge( [], elem.childNodes );
+		return elem.contentDocument || jQuery.merge( [], elem.childNodes );
 	}
 }, function( name, fn ) {
 	jQuery.fn[ name ] = function( until, selector ) {
-		var ret = jQuery.map( this, fn, until );
+		var matched = jQuery.map( this, fn, until );
 
 		if ( name.slice( -5 ) !== "Until" ) {
 			selector = until;
 		}
 
 		if ( selector && typeof selector === "string" ) {
-			ret = jQuery.filter( selector, ret );
+			matched = jQuery.filter( selector, matched );
 		}
 
 		if ( this.length > 1 ) {
 
 			// Remove duplicates
 			if ( !guaranteedUnique[ name ] ) {
-				ret = jQuery.uniqueSort( ret );
+				jQuery.uniqueSort( matched );
 			}
 
 			// Reverse order for parents* and prev-derivatives
 			if ( rparentsprev.test( name ) ) {
-				ret = ret.reverse();
+				matched.reverse();
 			}
 		}
 
-		return this.pushStack( ret );
+		return this.pushStack( matched );
 	};
 } );
 

src/traversing/findFilter.js

@@ -33,7 +33,7 @@ function winnow( elements, qualifier, not ) {
 	}
 
 	return jQuery.grep( elements, function( elem ) {
-		return ( jQuery.inArray( elem, qualifier ) > -1 ) !== not;
+		return ( indexOf.call( qualifier, elem ) > -1 ) !== not;
 	} );
 }
 
@@ -54,9 +54,9 @@ jQuery.filter = function( expr, elems, not ) {
 jQuery.fn.extend( {
 	find: function( selector ) {
 		var i,
+			len = this.length,
 			ret = [],
-			self = this,
-			len = self.length;
+			self = this;
 
 		if ( typeof selector !== "string" ) {
 			return this.pushStack( jQuery( selector ).filter( function() {

src/var/concat.js

 define( [
-	"./deletedIds"
-], function( deletedIds ) {
-	return deletedIds.concat;
+	"./arr"
+], function( arr ) {
+	return arr.concat;
 } );

src/var/indexOf.js

 define( [
-	"./deletedIds"
-], function( deletedIds ) {
-	return deletedIds.indexOf;
+	"./arr"
+], function( arr ) {
+	return arr.indexOf;
 } );

src/var/push.js

 define( [
-	"./deletedIds"
-], function( deletedIds ) {
-	return deletedIds.push;
+	"./arr"
+], function( arr ) {
+	return arr.push;
 } );

src/var/slice.js

 define( [
-	"./deletedIds"
-], function( deletedIds ) {
-	return deletedIds.slice;
+	"./arr"
+], function( arr ) {
+	return arr.slice;
 } );

src/wrap.js

@@ -7,6 +7,8 @@ define( [
 
 jQuery.fn.extend( {
 	wrapAll: function( html ) {
+		var wrap;
+
 		if ( jQuery.isFunction( html ) ) {
 			return this.each( function( i ) {
 				jQuery( this ).wrapAll( html.call( this, i ) );
@@ -16,7 +18,7 @@ jQuery.fn.extend( {
 		if ( this[ 0 ] ) {
 
 			// The elements to wrap the target around
-			var wrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true );
+			wrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true );
 
 			if ( this[ 0 ].parentNode ) {
 				wrap.insertBefore( this[ 0 ] );
@@ -25,8 +27,8 @@ jQuery.fn.extend( {
 			wrap.map( function() {
 				var elem = this;
 
-				while ( elem.firstChild && elem.firstChild.nodeType === 1 ) {
-					elem = elem.firstChild;
+				while ( elem.firstElementChild ) {
+					elem = elem.firstElementChild;
 				}
 
 				return elem;