Release 3.0.0-rc1

AUTHORS.txt

@@ -272,7 +272,24 @@ Christian Grete <webmaster@christiangrete.com>
 Liza Ramo <liza.h.ramo@gmail.com>
 Julian Alexander Murillo <julian.alexander.murillo@gmail.com>
 Joelle Fleurantin <joasqueeniebee@gmail.com>
+Jae Sung Park <alberto.park@gmail.com>
 Jun Sun <klsforever@gmail.com>
+Josh Soref <apache@soref.com>
+Henry Wong <henryw4k@gmail.com>
+Jon Dufresne <jon.dufresne@gmail.com>
+Martijn W. van der Lee <martijn@vanderlee.com>
 Devin Wilson <dwilson6.github@gmail.com>
-Todor Prikumov <tono_pr@abv.bg>
+Steve Mao <maochenyan@gmail.com>
 Zack Hall <zackhall@outlook.com>
+Bernhard M. Wiedemann <jquerybmw@lsmod.de>
+Todor Prikumov <tono_pr@abv.bg>
+Jha Naman <createnaman@gmail.com>
+William Robinet <william.robinet@conostix.com>
+Alexander Lisianoi <all3fox@gmail.com>
+Vitaliy Terziev <vitaliyterziev@gmail.com>
+Joe Trumbull <trumbull.j@gmail.com>
+Alexander K <xpyro@ya.ru>
+Damian Senn <jquery@topaxi.codes>
+Ralin Chimev <ralin.chimev@gmail.com>
+Felipe Sateler <fsateler@gmail.com>
+Christophe Tafani-Dereeper <christophetd@hotmail.fr>

package.json

@@ -2,12 +2,12 @@
   "name": "jquery",
   "title": "jQuery",
   "description": "JavaScript library for DOM operations",
-  "version": "2.2.4",
+  "version": "3.0.0-rc1",
   "main": "dist/jquery.js",
-  "homepage": "http://jquery.com",
+  "homepage": "https://jquery.com",
   "author": {
     "name": "jQuery Foundation and other contributors",
-    "url": "https://github.com/jquery/jquery/blob/2.2.4/AUTHORS.txt"
+    "url": "https://github.com/jquery/jquery/blob/3.0.0-rc1/AUTHORS.txt"
   },
   "repository": {
     "type": "git",
@@ -25,41 +25,50 @@
   "license": "MIT",
   "dependencies": {},
   "devDependencies": {
-    "commitplease": "2.0.0",
-    "core-js": "0.9.17",
-    "grunt": "0.4.5",
-    "grunt-babel": "5.0.1",
-    "grunt-cli": "0.1.13",
-    "grunt-compare-size": "0.4.0",
-    "grunt-contrib-jshint": "0.11.2",
-    "grunt-contrib-uglify": "0.9.2",
-    "grunt-contrib-watch": "0.6.1",
-    "grunt-git-authors": "2.0.1",
-    "grunt-jscs": "2.1.0",
-    "grunt-jsonlint": "1.0.4",
+    "babel-preset-es2015": "6.6.0",
+    "commitplease": "2.3.1",
+    "core-js": "2.2.2",
+    "cross-spawn": "2.2.3",
+    "grunt": "1.0.1",
+    "grunt-babel": "6.0.0",
+    "grunt-cli": "1.2.0",
+    "grunt-compare-size": "0.4.2",
+    "grunt-contrib-jshint": "1.0.0",
+    "grunt-contrib-uglify": "1.0.1",
+    "grunt-contrib-watch": "1.0.0",
+    "grunt-git-authors": "3.2.0",
+    "grunt-jscs": "2.8.0",
+    "grunt-jsonlint": "1.0.7",
+    "grunt-newer": "1.2.0",
     "grunt-npmcopy": "0.1.0",
     "gzip-js": "0.3.2",
+    "husky": "0.11.4",
+    "insight": "0.8.1",
     "jsdom": "5.6.1",
-    "load-grunt-tasks": "1.0.0",
-    "qunitjs": "1.17.1",
+    "load-grunt-tasks": "3.5.0",
+    "native-promise-only": "0.8.1",
+    "promises-aplus-tests": "2.1.1",
+    "q": "1.4.1",
     "qunit-assert-step": "1.0.3",
-    "requirejs": "2.1.17",
-    "sinon": "1.10.3",
-    "sizzle": "2.2.1",
-    "strip-json-comments": "1.0.3",
-    "testswarm": "1.1.0",
-    "win-spawn": "2.0.0"
+    "qunitjs": "1.23.1",
+    "requirejs": "2.2.0",
+    "sinon": "1.17.3",
+    "sizzle": "2.3.0",
+    "strip-json-comments": "2.0.1",
+    "testswarm": "1.1.0"
   },
   "scripts": {
     "build": "npm install && grunt",
     "start": "grunt watch",
-    "test": "grunt && grunt test"
+    "test": "grunt && grunt test",
+    "precommit": "grunt precommit_lint"
   },
   "commitplease": {
     "components": [
       "Docs",
       "Tests",
       "Build",
+      "Support",
       "Release",
       "Core",
       "Ajax",

src/.jshintrc

@@ -7,12 +7,13 @@
 	"immed": true,
 	"noarg": true,
 	"quotmark": "double",
+	"strict": true,
 	"undef": true,
 	"unused": true,
 
 	"sub": true,
 
-	// Support: IE < 10, Android < 4.1
+	// Support: IE <=9 only, Android <=4.0 only
 	// The above browsers are failing a lot of tests in the ES5
 	// test suite at http://test262.ecmascript.org.
 	"es3": true,

src/ajax.js

@@ -7,13 +7,16 @@ define( [
 	"./ajax/var/rquery",
 
 	"./core/init",
-	"./ajax/parseJSON",
 	"./ajax/parseXML",
 	"./event/trigger",
-	"./deferred"
+	"./deferred",
+	"./serialize" // jQuery.param
 ], function( jQuery, document, rnotwhite, location, nonce, rquery ) {
 
+"use strict";
+
 var
+	r20 = /%20/g,
 	rhash = /#.*$/,
 	rts = /([?&])_=[^&]*/,
 	rheaders = /^(.*?):[ \t]*([^\r\n]*)$/mg,
@@ -346,7 +349,7 @@ jQuery.extend( {
 			"text html": true,
 
 			// Evaluate text as a json expression
-			"text json": jQuery.parseJSON,
+			"text json": JSON.parse,
 
 			// Parse text as xml
 			"text xml": jQuery.parseXML
@@ -405,12 +408,18 @@ jQuery.extend( {
 			// Url cleanup var
 			urlAnchor,
 
+			// Request state (becomes false upon send and true upon completion)
+			completed,
+
 			// To know if global events are to be dispatched
 			fireGlobals,
 
 			// Loop variable
 			i,
 
+			// uncached part of the url
+			uncached,
+
 			// Create the final options object
 			s = jQuery.ajaxSetup( {}, options ),
 
@@ -434,9 +443,6 @@ jQuery.extend( {
 			requestHeaders = {},
 			requestHeadersNames = {},
 
-			// The jqXHR state
-			state = 0,
-
 			// Default abort message
 			strAbort = "canceled",
 
@@ -447,7 +453,7 @@ jQuery.extend( {
 				// Builds headers hashtable if needed
 				getResponseHeader: function( key ) {
 					var match;
-					if ( state === 2 ) {
+					if ( completed ) {
 						if ( !responseHeaders ) {
 							responseHeaders = {};
 							while ( ( match = rheaders.exec( responseHeadersString ) ) ) {
@@ -461,14 +467,14 @@ jQuery.extend( {
 
 				// Raw string
 				getAllResponseHeaders: function() {
-					return state === 2 ? responseHeadersString : null;
+					return completed ? responseHeadersString : null;
 				},
 
 				// Caches the header
 				setRequestHeader: function( name, value ) {
-					var lname = name.toLowerCase();
-					if ( !state ) {
-						name = requestHeadersNames[ lname ] = requestHeadersNames[ lname ] || name;
+					if ( completed == null ) {
+						name = requestHeadersNames[ name.toLowerCase() ] =
+							requestHeadersNames[ name.toLowerCase() ] || name;
 						requestHeaders[ name ] = value;
 					}
 					return this;
@@ -476,7 +482,7 @@ jQuery.extend( {
 
 				// Overrides response content-type header
 				overrideMimeType: function( type ) {
-					if ( !state ) {
+					if ( completed == null ) {
 						s.mimeType = type;
 					}
 					return this;
@@ -486,16 +492,16 @@ jQuery.extend( {
 				statusCode: function( map ) {
 					var code;
 					if ( map ) {
-						if ( state < 2 ) {
-							for ( code in map ) {
-
-								// Lazy-add the new callback in a way that preserves old ones
-								statusCode[ code ] = [ statusCode[ code ], map[ code ] ];
-							}
-						} else {
+						if ( completed ) {
 
 							// Execute the appropriate callbacks
 							jqXHR.always( map[ jqXHR.status ] );
+						} else {
+
+							// Lazy-add the new callbacks in a way that preserves old ones
+							for ( code in map ) {
+								statusCode[ code ] = [ statusCode[ code ], map[ code ] ];
+							}
 						}
 					}
 					return this;
@@ -513,33 +519,31 @@ jQuery.extend( {
 			};
 
 		// Attach deferreds
-		deferred.promise( jqXHR ).complete = completeDeferred.add;
-		jqXHR.success = jqXHR.done;
-		jqXHR.error = jqXHR.fail;
+		deferred.promise( jqXHR );
 
-		// Remove hash character (#7531: and string promotion)
 		// 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 || location.href ) + "" ).replace( rhash, "" )
+		s.url = ( ( url || s.url || location.href ) + "" )
 			.replace( rprotocol, location.protocol + "//" );
 
 		// Alias method option to type as per ticket #12004
 		s.type = options.method || options.type || s.method || s.type;
 
 		// Extract dataTypes list
-		s.dataTypes = jQuery.trim( s.dataType || "*" ).toLowerCase().match( rnotwhite ) || [ "" ];
+		s.dataTypes = ( s.dataType || "*" ).toLowerCase().match( rnotwhite ) || [ "" ];
 
 		// A cross-domain request is in order when the origin doesn't match the current origin.
 		if ( s.crossDomain == null ) {
 			urlAnchor = document.createElement( "a" );
 
-			// Support: IE8-11+
-			// IE throws exception if url is malformed, e.g. http://example.com:80x/
+			// Support: IE <=8 - 11, Edge 12 - 13
+			// IE throws exception on accessing the href property if url is malformed,
+			// e.g. http://example.com:80x/
 			try {
 				urlAnchor.href = s.url;
 
-				// Support: IE8-11+
+				// Support: IE <=8 - 11 only
 				// Anchor's host property isn't correctly set when s.url is relative
 				urlAnchor.href = urlAnchor.href;
 				s.crossDomain = originAnchor.protocol + "//" + originAnchor.host !==
@@ -561,7 +565,7 @@ jQuery.extend( {
 		inspectPrefiltersOrTransports( prefilters, s, options, jqXHR );
 
 		// If request was aborted inside a prefilter, stop there
-		if ( state === 2 ) {
+		if ( completed ) {
 			return jqXHR;
 		}
 
@@ -582,29 +586,36 @@ jQuery.extend( {
 
 		// Save the URL in case we're toying with the If-Modified-Since
 		// and/or If-None-Match header later on
-		cacheURL = s.url;
+		// Remove hash to simplify url manipulation
+		cacheURL = s.url.replace( rhash, "" );
 
 		// More options handling for requests with no content
 		if ( !s.hasContent ) {
 
+			// Remember the hash so we can put it back
+			uncached = s.url.slice( cacheURL.length );
+
 			// If data is available, append data to url
 			if ( s.data ) {
-				cacheURL = ( s.url += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data );
+				cacheURL += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data;
 
 				// #9682: remove data so that it's not used in an eventual retry
 				delete s.data;
 			}
 
-			// Add anti-cache in url if needed
+			// Add anti-cache in uncached url if needed
 			if ( s.cache === false ) {
-				s.url = rts.test( cacheURL ) ?
+				cacheURL = cacheURL.replace( rts, "" );
+				uncached = ( rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + ( nonce++ ) + uncached;
+			}
 
-					// If there is already a '_' parameter, set its value
-					cacheURL.replace( rts, "$1_=" + nonce++ ) :
+			// Put hash and anti-cache on the URL that will be requested (gh-1732)
+			s.url = cacheURL + uncached;
 
-					// Otherwise add one to the end
-					cacheURL + ( rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + nonce++;
-			}
+		// Change '%20' to '+' if this is encoded form body content (gh-2658)
+		} else if ( s.data && s.processData &&
+			( s.contentType || "" ).indexOf( "application/x-www-form-urlencoded" ) === 0 ) {
+			s.data = s.data.replace( r20, "+" );
 		}
 
 		// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
@@ -638,7 +649,7 @@ jQuery.extend( {
 
 		// Allow custom headers/mimetypes and early abort
 		if ( s.beforeSend &&
-			( s.beforeSend.call( callbackContext, jqXHR, s ) === false || state === 2 ) ) {
+			( s.beforeSend.call( callbackContext, jqXHR, s ) === false || completed ) ) {
 
 			// Abort if not done already and return
 			return jqXHR.abort();
@@ -648,9 +659,9 @@ jQuery.extend( {
 		strAbort = "abort";
 
 		// Install callbacks on deferreds
-		for ( i in { success: 1, error: 1, complete: 1 } ) {
-			jqXHR[ i ]( s[ i ] );
-		}
+		completeDeferred.add( s.complete );
+		jqXHR.done( s.success );
+		jqXHR.fail( s.error );
 
 		// Get transport
 		transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR );
@@ -667,7 +678,7 @@ jQuery.extend( {
 			}
 
 			// If request was aborted inside ajaxSend, stop there
-			if ( state === 2 ) {
+			if ( completed ) {
 				return jqXHR;
 			}
 
@@ -679,18 +690,17 @@ jQuery.extend( {
 			}
 
 			try {
-				state = 1;
+				completed = false;
 				transport.send( requestHeaders, done );
 			} catch ( e ) {
 
-				// Propagate exception as error if not done
-				if ( state < 2 ) {
-					done( -1, e );
-
-				// Simply rethrow otherwise
-				} else {
+				// Rethrow post-completion exceptions
+				if ( completed ) {
 					throw e;
 				}
+
+				// Propagate others as results
+				done( -1, e );
 			}
 		}
 
@@ -699,13 +709,12 @@ jQuery.extend( {
 			var isSuccess, success, error, response, modified,
 				statusText = nativeStatusText;
 
-			// Called once
-			if ( state === 2 ) {
+			// Ignore repeat invocations
+			if ( completed ) {
 				return;
 			}
 
-			// State is "done" now
-			state = 2;
+			completed = true;
 
 			// Clear timeout if it exists
 			if ( timeoutTimer ) {

src/ajax/jsonp.js

@@ -5,6 +5,8 @@ define( [
 	"../ajax"
 ], function( jQuery, nonce, rquery ) {
 
+"use strict";
+
 var oldCallbacks = [],
 	rjsonp = /(=)\?(?=&|$)|\?\?/;
 

src/ajax/load.js

@@ -4,23 +4,15 @@ define( [
 	"../ajax",
 	"../traversing",
 	"../manipulation",
-	"../selector",
-
-	// Optional event/alias dependency
-	"../event/alias"
+	"../selector"
 ], function( jQuery ) {
 
-// Keep a copy of the old load method
-var _load = jQuery.fn.load;
+"use strict";
 
 /**
  * Load a url into a page
  */
 jQuery.fn.load = function( url, params, callback ) {
-	if ( typeof url !== "string" && _load ) {
-		return _load.apply( this, arguments );
-	}
-
 	var selector, type, response,
 		self = this,
 		off = url.indexOf( " " );

src/ajax/parseJSON.js

-define( [
-	"../core"
-], function( jQuery ) {
-
-// Support: Android 2.3
-// Workaround failure to string-cast null input
-jQuery.parseJSON = function( data ) {
-	return JSON.parse( data + "" );
-};
-
-return jQuery.parseJSON;
-
-} );

src/ajax/parseXML.js

@@ -2,6 +2,8 @@ define( [
 	"../core"
 ], function( jQuery ) {
 
+"use strict";
+
 // Cross-browser xml parsing
 jQuery.parseXML = function( data ) {
 	var xml;
@@ -9,7 +11,8 @@ jQuery.parseXML = function( data ) {
 		return null;
 	}
 
-	// Support: IE9
+	// Support: IE 9 - 11 only
+	// IE throws on parseFromString with invalid input.
 	try {
 		xml = ( new window.DOMParser() ).parseFromString( data, "text/xml" );
 	} catch ( e ) {

src/ajax/script.js

@@ -4,6 +4,15 @@ define( [
 	"../ajax"
 ], function( jQuery, document ) {
 
+"use strict";
+
+// Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432)
+jQuery.ajaxPrefilter( function( s ) {
+	if ( s.crossDomain ) {
+		s.contents.script = false;
+	}
+} );
+
 // Install script dataType
 jQuery.ajaxSetup( {
 	accepts: {

src/ajax/var/location.js

 define( function() {
+	"use strict";
+
 	return window.location;
 } );

src/ajax/var/nonce.js

 define( [
 	"../../core"
 ], function( jQuery ) {
+	"use strict";
+
 	return jQuery.now();
 } );

src/ajax/var/rquery.js

 define( function() {
+	"use strict";
+
 	return ( /\?/ );
 } );

src/ajax/xhr.js

@@ -4,6 +4,8 @@ define( [
 	"../ajax"
 ], function( jQuery, support ) {
 
+"use strict";
+
 jQuery.ajaxSettings.xhr = function() {
 	try {
 		return new window.XMLHttpRequest();
@@ -15,7 +17,7 @@ var xhrSuccessStatus = {
 		// File protocol always yields status code 0, assume 200
 		0: 200,
 
-		// Support: IE9
+		// Support: IE <=9 only
 		// #1450: sometimes IE returns 1223 when it should be 204
 		1223: 204
 	},
@@ -79,7 +81,7 @@ jQuery.ajaxTransport( function( options ) {
 								xhr.abort();
 							} else if ( type === "error" ) {
 
-								// Support: IE9
+								// Support: IE <=9 only
 								// On a manual native abort, IE9 throws
 								// errors on any property access that is not readyState
 								if ( typeof xhr.status !== "number" ) {
@@ -97,7 +99,7 @@ jQuery.ajaxTransport( function( options ) {
 									xhrSuccessStatus[ xhr.status ] || xhr.status,
 									xhr.statusText,
 
-									// Support: IE9 only
+									// Support: IE <=9 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"  ||
@@ -115,7 +117,7 @@ jQuery.ajaxTransport( function( options ) {
 				xhr.onload = callback();
 				errorCallback = xhr.onerror = callback( "error" );
 
-				// Support: IE9
+				// Support: IE 9 only
 				// Use onreadystatechange to replace onabort
 				// to handle uncaught aborts
 				if ( xhr.onabort !== undefined ) {

src/attributes.js

@@ -6,6 +6,8 @@ define( [
 	"./attributes/val"
 ], function( jQuery ) {
 
+"use strict";
+
 // Return jQuery for attributes-only inclusion
 return jQuery;
 } );

src/attributes/attr.js

@@ -6,6 +6,8 @@ define( [
 	"../selector"
 ], function( jQuery, access, support, rnotwhite ) {
 
+"use strict";
+
 var boolHook,
 	attrHandle = jQuery.expr.attrHandle;
 
@@ -39,8 +41,7 @@ jQuery.extend( {
 		// All attributes are lowercase
 		// Grab necessary hook if one is defined
 		if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {
-			name = name.toLowerCase();
-			hooks = jQuery.attrHooks[ name ] ||
+			hooks = jQuery.attrHooks[ name.toLowerCase() ] ||
 				( jQuery.expr.match.bool.test( name ) ? boolHook : undefined );
 		}
 
@@ -86,21 +87,12 @@ jQuery.extend( {
 	},
 
 	removeAttr: function( elem, value ) {
-		var name, propName,
+		var name,
 			i = 0,
 			attrNames = value && value.match( rnotwhite );
 
 		if ( attrNames && elem.nodeType === 1 ) {
 			while ( ( name = attrNames[ i++ ] ) ) {
-				propName = jQuery.propFix[ name ] || name;
-
-				// Boolean attributes get special treatment (#10870)
-				if ( jQuery.expr.match.bool.test( name ) ) {
-
-					// Set corresponding property to false
-					elem[ propName ] = false;
-				}
-
 				elem.removeAttribute( name );
 			}
 		}
@@ -120,6 +112,7 @@ boolHook = {
 		return name;
 	}
 };
+
 jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( i, name ) {
 	var getter = attrHandle[ name ] || jQuery.find.attr;
 

src/attributes/classes.js

@@ -5,6 +5,8 @@ define( [
 	"../core/init"
 ], function( jQuery, rnotwhite, dataPriv ) {
 
+"use strict";
+
 var rclass = /[\t\r\n\f]/g;
 
 function getClass( elem ) {

src/attributes/prop.js

@@ -5,6 +5,8 @@ define( [
 	"../selector"
 ], function( jQuery, access, support ) {
 
+"use strict";
+
 var rfocusable = /^(?:input|select|textarea|button)$/i,
 	rclickable = /^(?:a|area)$/i;
 
@@ -57,9 +59,10 @@ jQuery.extend( {
 		tabIndex: {
 			get: function( elem ) {
 
+				// Support: IE <=9 - 11 only
 				// elem.tabIndex doesn't always return the
 				// correct value when it hasn't been explicitly set
-				// http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
+				// https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
 				// Use proper attribute retrieval(#12072)
 				var tabindex = jQuery.find.attr( elem, "tabindex" );
 

src/attributes/support.js

@@ -3,6 +3,8 @@ define( [
 	"../var/support"
 ], function( document, support ) {
 
+"use strict";
+
 ( function() {
 	var input = document.createElement( "input" ),
 		select = document.createElement( "select" ),
@@ -10,20 +12,15 @@ define( [
 
 	input.type = "checkbox";
 
-	// Support: iOS<=5.1, Android<=4.2+
+	// Support: Android <=4.3 only
 	// Default value for a checkbox should be "on"
 	support.checkOn = input.value !== "";
 
-	// Support: IE<=11+
+	// Support: IE <=11 only
 	// Must access selectedIndex to make default options select
 	support.optSelected = opt.selected;
 
-	// Support: Android<=2.3
-	// Options inside disabled selects are incorrectly marked as disabled
-	select.disabled = true;
-	support.optDisabled = !opt.disabled;
-
-	// Support: IE<=11+
+	// Support: IE <=11 only
 	// An input loses its value after becoming a radio
 	input = document.createElement( "input" );
 	input.value = "t";

src/attributes/val.js

@@ -4,6 +4,8 @@ define( [
 	"../core/init"
 ], function( jQuery, support ) {
 
+"use strict";
+
 var rreturn = /\r/g,
 	rspaces = /[\x20\t\r\n\f]+/g;
 
@@ -85,7 +87,7 @@ jQuery.extend( {
 				return val != null ?
 					val :
 
-					// Support: IE10-11+
+					// Support: IE <=10 - 11 only
 					// option.text throws exceptions (#14686, #14858)
 					// Strip and collapse whitespace
 					// https://html.spec.whatwg.org/#strip-and-collapse-whitespace
@@ -97,7 +99,7 @@ jQuery.extend( {
 				var value, option,
 					options = elem.options,
 					index = elem.selectedIndex,
-					one = elem.type === "select-one" || index < 0,
+					one = elem.type === "select-one",
 					values = one ? null : [],
 					max = one ? index + 1 : options.length,
 					i = index < 0 ?
@@ -108,12 +110,12 @@ jQuery.extend( {
 				for ( ; i < max; i++ ) {
 					option = options[ i ];
 
+					// Support: IE <=9 only
 					// 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.parentNode.disabled ||
 								!jQuery.nodeName( option.parentNode, "optgroup" ) ) ) {
 

src/callbacks.js

@@ -3,6 +3,8 @@ define( [
 	"./var/rnotwhite"
 ], function( jQuery, rnotwhite ) {
 
+"use strict";
+
 // Convert String-formatted options into Object-formatted ones
 function createOptions( options ) {
 	var object = {};
@@ -191,7 +193,7 @@ jQuery.Callbacks = function( options ) {
 			// Abort any pending executions
 			lock: function() {
 				locked = queue = [];
-				if ( !memory ) {
+				if ( !memory && !firing ) {
 					list = memory = "";
 				}
 				return this;

src/core.js

 define( [
 	"./var/arr",
 	"./var/document",
+	"./var/getProto",
 	"./var/slice",
 	"./var/concat",
 	"./var/push",
@@ -8,11 +9,18 @@ define( [
 	"./var/class2type",
 	"./var/toString",
 	"./var/hasOwn",
-	"./var/support"
-], function( arr, document, slice, concat, push, indexOf, class2type, toString, hasOwn, support ) {
+	"./var/fnToString",
+	"./var/ObjectFunctionString",
+	"./var/support",
+	"./core/DOMEval"
+], function( arr, document, getProto, slice, concat, push, indexOf,
+	class2type, toString, hasOwn, fnToString, ObjectFunctionString,
+	support, DOMEval ) {
+
+"use strict";
 
 var
-	version = "@VERSION",
+	version = "3.0.0-rc1",
 
 	// Define a local copy of jQuery
 	jQuery = function( selector, context ) {
@@ -22,13 +30,13 @@ var
 		return new jQuery.fn.init( selector, context );
 	},
 
-	// Support: Android<4.1
+	// Support: Android <=4.0 only
 	// Make sure we trim BOM and NBSP
 	rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,
 
 	// Matches dashed string for camelizing
 	rmsPrefix = /^-ms-/,
-	rdashAlpha = /-([\da-z])/gi,
+	rdashAlpha = /-([a-z])/g,
 
 	// Used by jQuery.camelCase as callback to replace()
 	fcamelCase = function( all, letter ) {
@@ -42,9 +50,6 @@ jQuery.fn = jQuery.prototype = {
 
 	constructor: jQuery,
 
-	// Start with an empty selector
-	selector: "",
-
 	// The default length of a jQuery object is 0
 	length: 0,
 
@@ -73,7 +78,6 @@ jQuery.fn = jQuery.prototype = {
 
 		// Add the old object onto the stack (as a reference)
 		ret.prevObject = this;
-		ret.context = this.context;
 
 		// Return the newly-formed element set
 		return ret;
@@ -214,37 +218,37 @@ jQuery.extend( {
 
 	isNumeric: function( obj ) {
 
-		// parseFloat NaNs numeric-cast false positives (null|true|false|"")
+		// As of jQuery 3.0, isNumeric is limited to
+		// strings and numbers (primitives or objects)
+		// that can be coerced to finite numbers (gh-2662)
+		var type = jQuery.type( obj );
+		return ( type === "number" || type === "string" ) &&
+
+			// parseFloat NaNs numeric-cast false positives ("")
 			// ...but misinterprets leading-number strings, particularly hex literals ("0x...")
 			// subtraction forces infinities to NaN
-		// adding 1 corrects loss of precision from parseFloat (#15100)
-		var realStringObj = obj && obj.toString();
-		return !jQuery.isArray( obj ) && ( realStringObj - parseFloat( realStringObj ) + 1 ) >= 0;
+			!isNaN( obj - parseFloat( obj ) );
 	},
 
 	isPlainObject: function( obj ) {
-		var key;
+		var proto, Ctor;
 
-		// 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 ) ) {
+		// Detect obvious negatives
+		// Use toString instead of jQuery.type to catch host objects
+		if ( !obj || toString.call( obj ) !== "[object Object]" ) {
 			return false;
 		}
 
-		// Not own constructor property must be Object
-		if ( obj.constructor &&
-				!hasOwn.call( obj, "constructor" ) &&
-				!hasOwn.call( obj.constructor.prototype || {}, "isPrototypeOf" ) ) {
-			return false;
-		}
+		proto = getProto( obj );
 
-		// Own properties are enumerated firstly, so to speed up,
-		// if last one is own, then all properties are own
-		for ( key in obj ) {}
+		// Objects with no prototype (e.g., `Object.create( null )`) are plain
+		if ( !proto ) {
+			return true;
+		}
 
-		return key === undefined || hasOwn.call( obj, key );
+		// Objects with prototype are plain iff they were constructed by a global Object function
+		Ctor = hasOwn.call( proto, "constructor" ) && proto.constructor;
+		return typeof Ctor === "function" && fnToString.call( Ctor ) === ObjectFunctionString;
 	},
 
 	isEmptyObject: function( obj ) {
@@ -260,7 +264,7 @@ jQuery.extend( {
 			return obj + "";
 		}
 
-		// Support: Android<4.0, iOS<6 (functionish RegExp)
+		// Support: Android <=2.3 only (functionish RegExp)
 		return typeof obj === "object" || typeof obj === "function" ?
 			class2type[ toString.call( obj ) ] || "object" :
 			typeof obj;
@@ -268,32 +272,11 @@ jQuery.extend( {
 
 	// 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 );
-			}
-		}
+		DOMEval( code );
 	},
 
 	// Convert dashed to camelCase; used by the css and data modules
-	// Support: IE9-11+
+	// Support: IE <=9 - 11, Edge 12 - 13
 	// Microsoft forgot to hump their vendor prefix (#9572)
 	camelCase: function( string ) {
 		return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase );
@@ -324,7 +307,7 @@ jQuery.extend( {
 		return obj;
 	},
 
-	// Support: Android<4.1
+	// Support: Android <=4.0 only
 	trim: function( text ) {
 		return text == null ?
 			"" :
@@ -353,6 +336,8 @@ jQuery.extend( {
 		return arr == null ? -1 : indexOf.call( arr, elem, i );
 	},
 
+	// Support: Android <=4.0 only, PhantomJS 1 only
+	// push.apply(_, arraylike) throws on ancient WebKit
 	merge: function( first, second ) {
 		var len = +second.length,
 			j = 0,
@@ -475,7 +460,7 @@ function( i, name ) {
 
 function isArrayLike( obj ) {
 
-	// Support: iOS 8.2 (not reproducible in simulator)
+	// Support: real iOS 8.2 only (not reproducible in simulator)
 	// `in` check used to prevent JIT error (gh-2145)
 	// hasOwn isn't used here due to false negatives
 	// regarding Nodelist length in IE

src/core/DOMEval.js

+define( [
+	"../var/document"
+], function( document ) {
+	"use strict";
+
+	function DOMEval( code, doc ) {
+		doc = doc || document;
+
+		var script = doc.createElement( "script" );
+
+		script.text = code;
+		doc.head.appendChild( script ).parentNode.removeChild( script );
+	}
+
+	return DOMEval;
+} );

src/core/access.js

@@ -2,6 +2,8 @@ define( [
 	"../core"
 ], function( jQuery ) {
 
+"use strict";
+
 // Multifunctional method to get and set values of a collection
 // The value/s can optionally be executed if it's a function
 var access = function( elems, fn, key, value, chainable, emptyGet, raw ) {

src/core/init.js

@@ -6,13 +6,16 @@ define( [
 	"../traversing/findFilter"
 ], function( jQuery, document, rsingleTag ) {
 
+"use strict";
+
 // A central reference to the root jQuery(document)
 var rootjQuery,
 
 	// A simple way to check for HTML strings
 	// Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
 	// Strict HTML recognition (#11290: must start with <)
-	rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]*))$/,
+	// Shortcut simple #id case for speed
+	rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/,
 
 	init = jQuery.fn.init = function( selector, context, root ) {
 		var match, elem;
@@ -75,17 +78,12 @@ var rootjQuery,
 				} else {
 					elem = document.getElementById( match[ 2 ] );
 
-					// Support: Blackberry 4.6
-					// gEBID returns nodes no longer in the document (#6963)
-					if ( elem && elem.parentNode ) {
+					if ( elem ) {
 
 						// Inject the element directly into the jQuery object
-						this.length = 1;
 						this[ 0 ] = elem;
+						this.length = 1;
 					}
-
-					this.context = document;
-					this.selector = selector;
 					return this;
 				}
 
@@ -101,7 +99,7 @@ var rootjQuery,
 
 		// HANDLE: $(DOMElement)
 		} else if ( selector.nodeType ) {
-			this.context = this[ 0 ] = selector;
+			this[ 0 ] = selector;
 			this.length = 1;
 			return this;
 
@@ -115,11 +113,6 @@ var rootjQuery,
 				selector( jQuery );
 		}
 
-		if ( selector.selector !== undefined ) {
-			this.selector = selector.selector;
-			this.context = selector.context;
-		}
-
 		return jQuery.makeArray( selector, this );
 	};
 

src/core/parseHTML.js

@@ -2,24 +2,48 @@ define( [
 	"../core",
 	"../var/document",
 	"./var/rsingleTag",
-	"../manipulation/buildFragment"
-], function( jQuery, document, rsingleTag, buildFragment ) {
+	"../manipulation/buildFragment",
+
+	// This is the only module that needs core/support
+	"./support"
+], function( jQuery, document, rsingleTag, buildFragment, support ) {
+
+"use strict";
 
 // 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
 jQuery.parseHTML = function( data, context, keepScripts ) {
-	if ( !data || typeof data !== "string" ) {
-		return null;
+	if ( typeof data !== "string" ) {
+		return [];
 	}
 	if ( typeof context === "boolean" ) {
 		keepScripts = context;
 		context = false;
 	}
-	context = context || document;
 
-	var parsed = rsingleTag.exec( data ),
+	var base, parsed, scripts;
+
+	if ( !context ) {
+
+		// Stop scripts or inline event handlers from being executed immediately
+		// by using document.implementation
+		if ( support.createHTMLDocument ) {
+			context = document.implementation.createHTMLDocument( "" );
+
+			// Set the base href for the created document
+			// so any parsed elements with URLs
+			// are based on the document's URL (gh-2965)
+			base = context.createElement( "base" );
+			base.href = document.location.href;
+			context.head.appendChild( base );
+		} else {
+			context = document;
+		}
+	}
+
+	parsed = rsingleTag.exec( data );
 	scripts = !keepScripts && [];
 
 	// Single tag

src/core/ready-no-deferred.js

+define( [
+	"../core",
+	"../var/document"
+], function( jQuery, document ) {
+
+"use strict";
+
+var readyCallbacks = [],
+	readyFiring = false,
+	whenReady = function( fn ) {
+		readyCallbacks.push( fn );
+	},
+	executeReady = function( fn ) {
+
+		// Prevent errors from freezing future callback execution (gh-1823)
+		// Not backwards-compatible as this does not execute sync
+		window.setTimeout( function() {
+			fn.call( document, jQuery );
+		} );
+	};
+
+jQuery.fn.ready = function( fn ) {
+	whenReady( fn );
+	return this;
+};
+
+jQuery.extend( {
+
+	// Is the DOM ready to be used? Set to true once it occurs.
+	isReady: false,
+
+	// A counter to track how many items to wait for before
+	// the ready event fires. See #6781
+	readyWait: 1,
+
+	// Hold (or release) the ready event
+	holdReady: function( hold ) {
+		if ( hold ) {
+			jQuery.readyWait++;
+		} else {
+			jQuery.ready( true );
+		}
+	},
+
+	ready: function( wait ) {
+
+		// Abort if there are pending holds or we're already ready
+		if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {
+			return;
+		}
+
+		// Remember that the DOM is ready
+		jQuery.isReady = true;
+
+		// If a normal DOM Ready event fired, decrement, and wait if need be
+		if ( wait !== true && --jQuery.readyWait > 0 ) {
+			return;
+		}
+
+		whenReady = function( fn ) {
+			readyCallbacks.push( fn );
+
+			if ( !readyFiring ) {
+				readyFiring = true;
+
+				while ( readyCallbacks.length ) {
+					fn = readyCallbacks.shift();
+					if ( jQuery.isFunction( fn ) ) {
+						executeReady( fn );
+					}
+				}
+				readyFiring = false;
+			}
+		};
+
+		whenReady();
+	}
+} );
+
+// Make jQuery.ready Promise consumable (gh-1778)
+jQuery.ready.then = jQuery.fn.ready;
+
+/**
+ * The ready event handler and self cleanup method
+ */
+function completed() {
+	document.removeEventListener( "DOMContentLoaded", completed );
+	window.removeEventListener( "load", completed );
+	jQuery.ready();
+}
+
+// Catch cases where $(document).ready() is called
+// after the browser event has already occurred.
+// Support: IE9-10 only
+// Older IE sometimes signals "interactive" too soon
+if ( document.readyState === "complete" ||
+	( document.readyState !== "loading" && !document.documentElement.doScroll ) ) {
+
+	// Handle it asynchronously to allow scripts the opportunity to delay ready
+	window.setTimeout( jQuery.ready );
+
+} else {
+
+	// Use the handy event callback
+	document.addEventListener( "DOMContentLoaded", completed );
+
+	// A fallback to window.onload, that will always work
+	window.addEventListener( "load", completed );
+}
+
+} );

src/core/ready.js

 define( [
 	"../core",
 	"../var/document",
-	"../core/init",
 	"../deferred"
 ], function( jQuery, document ) {
 
+"use strict";
+
 // The deferred used on DOM ready
-var readyList;
+var readyList = jQuery.Deferred();
 
 jQuery.fn.ready = function( fn ) {
 
-	// Add the callback
-	jQuery.ready.promise().done( fn );
+	readyList.then( fn );
 
 	return this;
 };
@@ -52,52 +52,35 @@ jQuery.extend( {
 
 		// If there are functions bound, to execute
 		readyList.resolveWith( document, [ jQuery ] );
-
-		// Trigger any bound ready events
-		if ( jQuery.fn.triggerHandler ) {
-			jQuery( document ).triggerHandler( "ready" );
-			jQuery( document ).off( "ready" );
-		}
 	}
 } );
 
-/**
- * The ready event handler and self cleanup method
- */
+jQuery.ready.then = readyList.then;
+
+// The ready event handler and self cleanup method
 function completed() {
 	document.removeEventListener( "DOMContentLoaded", completed );
 	window.removeEventListener( "load", completed );
 	jQuery.ready();
 }
 
-jQuery.ready.promise = function( obj ) {
-	if ( !readyList ) {
-
-		readyList = jQuery.Deferred();
-
-		// Catch cases where $(document).ready() is called
-		// after the browser event has already occurred.
-		// Support: IE9-10 only
-		// Older IE sometimes signals "interactive" too soon
-		if ( document.readyState === "complete" ||
+// Catch cases where $(document).ready() is called
+// after the browser event has already occurred.
+// Support: IE <=9 - 10 only
+// Older IE sometimes signals "interactive" too soon
+if ( document.readyState === "complete" ||
 	( document.readyState !== "loading" && !document.documentElement.doScroll ) ) {
 
 	// Handle it asynchronously to allow scripts the opportunity to delay ready
 	window.setTimeout( jQuery.ready );
 
-		} else {
+} else {
 
 	// Use the handy event callback
 	document.addEventListener( "DOMContentLoaded", completed );
 
 	// A fallback to window.onload, that will always work
 	window.addEventListener( "load", completed );
-		}
-	}
-	return readyList.promise( obj );
-};
-
-// Kick off the DOM ready check even if the user does not
-jQuery.ready.promise();
+}
 
 } );

src/core/support.js

+define( [
+	"../var/document",
+	"../var/support"
+], function( document, support ) {
+
+"use strict";
+
+// Support: Safari 8 only
+// In Safari 8 documents created via document.implementation.createHTMLDocument
+// collapse sibling forms: the second one becomes a child of the first one.
+// Because of that, this security measure has to be disabled in Safari 8.
+// https://bugs.webkit.org/show_bug.cgi?id=137337
+support.createHTMLDocument = ( function() {
+	var body = document.implementation.createHTMLDocument( "" ).body;
+	body.innerHTML = "<form></form><form></form>";
+	return body.childNodes.length === 2;
+} )();
+
+return support;
+} );

src/core/var/rsingleTag.js

 define( function() {
+	"use strict";
 
 	// Match a standalone tag
-	return ( /^<([\w-]+)\s*\/?>(?:<\/\1>|)$/ );
+	return ( /^<([a-z][^\/\0>:\x20\t\r\n\f]*)[\x20\t\r\n\f]*\/?>(?:<\/\1>|)$/i );
 } );

src/css.js

@@ -7,21 +7,20 @@ define( [
 	"./var/rcssNum",
 	"./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,
-	getStyles, swap, curCSS, adjustCSS, defaultDisplay, addGetHookIf, support, dataPriv ) {
+], function( jQuery, pnum, access, rmargin, document, rcssNum, rnumnonpx, cssExpand,
+	getStyles, swap, curCSS, adjustCSS, addGetHookIf, support ) {
+
+"use strict";
 
 var
 
@@ -29,14 +28,13 @@ var
 	// 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]).+)/,
-
 	cssShow = { position: "absolute", visibility: "hidden", display: "block" },
 	cssNormalTransform = {
 		letterSpacing: "0",
 		fontWeight: "400"
 	},
 
-	cssPrefixes = [ "Webkit", "O", "Moz", "ms" ],
+	cssPrefixes = [ "Webkit", "Moz", "ms" ],
 	emptyStyle = document.createElement( "div" ).style;
 
 // Return a css property mapped to a potentially vendor prefixed property
@@ -118,11 +116,18 @@ function augmentWidthOrHeight( elem, name, extra, isBorderBox, styles ) {
 function getWidthOrHeight( elem, name, extra ) {
 
 	// Start with offset property, which is equivalent to the border-box value
-	var valueIsBorderBox = true,
-		val = name === "width" ? elem.offsetWidth : elem.offsetHeight,
+	var val,
+		valueIsBorderBox = true,
 		styles = getStyles( elem ),
 		isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box";
 
+	// Support: IE <=11 only
+	// Running getBoundingClientRect on a disconnected node
+	// in IE throws an error.
+	if ( elem.getClientRects().length ) {
+		val = elem.getBoundingClientRect()[ name ];
+	}
+
 	// 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
@@ -160,66 +165,6 @@ 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
@@ -301,7 +246,6 @@ jQuery.extend( {
 				value += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? "" : "px" );
 			}
 
-			// Support: IE9-11+
 			// background-* props affect original clone's values
 			if ( !support.clearCloneStyle && value === "" && name.indexOf( "background" ) === 0 ) {
 				style[ name ] = "inherit";
@@ -371,7 +315,14 @@ jQuery.each( [ "height", "width" ], function( i, name ) {
 				// 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 ?
+
+					// Support: Safari 8+
+					// Table columns in Safari have non-zero offsetWidth & zero
+					// getBoundingClientRect().width unless display is changed.
+					// Support: IE <=11 only
+					// Running getBoundingClientRect on a disconnected node
+					// in IE throws an error.
+					( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ?
 						swap( elem, cssShow, function() {
 							return getWidthOrHeight( elem, name, extra );
 						} ) :
@@ -416,16 +367,6 @@ jQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft,
 	}
 );
 
-// Support: Android 2.3
-jQuery.cssHooks.marginRight = addGetHookIf( support.reliableMarginRight,
-	function( elem, computed ) {
-		if ( computed ) {
-			return swap( elem, { "display": "inline-block" },
-				curCSS, [ elem, "marginRight" ] );
-		}
-	}
-);
-
 // These hooks are used by animate to expand properties
 jQuery.each( {
 	margin: "",
@@ -476,25 +417,6 @@ jQuery.fn.extend( {
 				jQuery.style( elem, name, value ) :
 				jQuery.css( elem, name );
 		}, name, value, arguments.length > 1 );
-	},
-	show: function() {
-		return showHide( this, true );
-	},
-	hide: function() {
-		return showHide( this );
-	},
-	toggle: function( state ) {
-		if ( typeof state === "boolean" ) {
-			return state ? this.show() : this.hide();
-		}
-
-		return this.each( function() {
-			if ( isHidden( this ) ) {
-				jQuery( this ).show();
-			} else {
-				jQuery( this ).hide();
-			}
-		} );
 	}
 } );
 

src/css/addGetHookIf.js

 define( function() {
 
+"use strict";
+
 function addGetHookIf( conditionFn, hookFn ) {
 
 	// Define the hook, we'll check on the first run if it's really needed.

src/css/adjustCSS.js

@@ -3,6 +3,8 @@ define( [
 	"../var/rcssNum"
 ], function( jQuery, rcssNum ) {
 
+"use strict";
+
 function adjustCSS( elem, prop, valueParts, tween ) {
 	var adjusted,
 		scale = 1,

src/css/curCSS.js

@@ -7,29 +7,28 @@ define( [
 	"../selector" // Get jQuery.contains
 ], function( jQuery, rnumnonpx, rmargin, getStyles, support ) {
 
+"use strict";
+
 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
+	// Support: IE <=9 only
 	// getPropertyValue is only needed for .css('filter') (#12537)
 	if ( computed ) {
+		ret = computed.getPropertyValue( name ) || computed[ name ];
+
+		if ( ret === "" && !jQuery.contains( elem.ownerDocument, elem ) ) {
+			ret = jQuery.style( elem, name );
+		}
 
 		// 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
+		// https://drafts.csswg.org/cssom/#resolved-values
 		if ( !support.pixelMarginRight() && rnumnonpx.test( ret ) && rmargin.test( name ) ) {
 
 			// Remember the original values
@@ -50,7 +49,7 @@ function curCSS( elem, name, computed ) {
 
 	return ret !== undefined ?
 
-		// Support: IE9-11+
+		// Support: IE <=9 - 11 only
 		// IE returns zIndex value as an integer.
 		ret + "" :
 		ret;

src/css/defaultDisplay.js

-define( [
-	"../core",
-	"../var/document",
-	"../manipulation" // appendTo
-], function( jQuery, document ) {
-
-var iframe,
-	elemdisplay = {
-
-		// Support: Firefox
-		// We have to pre-define these values for FF (#10227)
-		HTML: "block",
-		BODY: "block"
-	};
-
-/**
- * Retrieve the actual display of a element
- * @param {String} name nodeName of the element
- * @param {Object} doc Document object
- */
-
-// Called only from within defaultDisplay
-function actualDisplay( name, doc ) {
-	var elem = jQuery( doc.createElement( name ) ).appendTo( doc.body ),
-
-		display = jQuery.css( elem[ 0 ], "display" );
-
-	// We don't have any data stored on the element,
-	// so use "detach" method as fast way to get rid of the element
-	elem.detach();
-
-	return display;
-}
-
-/**
- * Try to determine the default display value of an element
- * @param {String} nodeName
- */
-function defaultDisplay( nodeName ) {
-	var doc = document,
-		display = elemdisplay[ nodeName ];
-
-	if ( !display ) {
-		display = actualDisplay( nodeName, doc );
-
-		// If the simple way fails, read from inside an iframe
-		if ( display === "none" || !display ) {
-
-			// Use the already-created iframe if possible
-			iframe = ( iframe || jQuery( "<iframe frameborder='0' width='0' height='0'/>" ) )
-				.appendTo( doc.documentElement );
-
-			// Always write a new HTML skeleton so Webkit and Firefox don't choke on reuse
-			doc = iframe[ 0 ].contentDocument;
-
-			// Support: IE
-			doc.write();
-			doc.close();
-
-			display = actualDisplay( nodeName, doc );
-			iframe.detach();
-		}
-
-		// Store the correct default display
-		elemdisplay[ nodeName ] = display;
-	}
-
-	return display;
-}
-
-return defaultDisplay;
-} );

src/css/hiddenVisibleSelectors.js

@@ -3,16 +3,13 @@ define( [
 	"../selector"
 ], function( jQuery ) {
 
-jQuery.expr.filters.hidden = function( elem ) {
-	return !jQuery.expr.filters.visible( elem );
-};
-jQuery.expr.filters.visible = function( elem ) {
+"use strict";
 
-	// Support: Opera <= 12.12
-	// Opera reports offsetWidths and offsetHeights less than zero on some elements
-	// 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;
+jQuery.expr.pseudos.hidden = function( elem ) {
+	return !jQuery.expr.pseudos.visible( elem );
+};
+jQuery.expr.pseudos.visible = function( elem ) {
+	return !!( elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length );
 };
 
 } );

src/css/showHide.js

 define( [
-	"../data/var/dataPriv"
-], function( dataPriv ) {
+	"../core",
+	"../data/var/dataPriv",
+	"../css/var/isHiddenWithinTree"
+], function( jQuery, dataPriv, isHiddenWithinTree ) {
+
+"use strict";
+
+var defaultDisplayMap = {};
+
+function getDefaultDisplay( elem ) {
+	var temp,
+		doc = elem.ownerDocument,
+		nodeName = elem.nodeName,
+		display = defaultDisplayMap[ nodeName ];
+
+	if ( display ) {
+		return display;
+	}
+
+	temp = doc.body.appendChild( doc.createElement( nodeName ) ),
+	display = jQuery.css( temp, "display" );
+
+	temp.parentNode.removeChild( temp );
+
+	if ( display === "none" ) {
+		display = "block";
+	}
+	defaultDisplayMap[ nodeName ] = display;
+
+	return display;
+}
 
 function showHide( elements, show ) {
 	var display, elem,
@@ -17,23 +46,30 @@ function showHide( elements, show ) {
 
 		display = elem.style.display;
 		if ( show ) {
-			if ( display === "none" ) {
 
-				// Restore a pre-hide() value if we have one
-				values[ index ] = dataPriv.get( elem, "display" ) || "";
+			// Since we force visibility upon cascade-hidden elements, an immediate (and slow)
+			// check is required in this first loop unless we have a nonempty display value (either
+			// inline or about-to-be-restored)
+			if ( display === "none" ) {
+				values[ index ] = dataPriv.get( elem, "display" ) || null;
+				if ( !values[ index ] ) {
+					elem.style.display = "";
+				}
+			}
+			if ( elem.style.display === "" && isHiddenWithinTree( elem ) ) {
+				values[ index ] = getDefaultDisplay( elem );
 			}
 		} else {
 			if ( display !== "none" ) {
 				values[ index ] = "none";
 
-				// Remember the value we're replacing
+				// Remember what we're overwriting
 				dataPriv.set( elem, "display", display );
 			}
 		}
 	}
 
-	// Set the display of the elements in a second loop
-	// to avoid the constant reflow
+	// Set the display of the elements in a second loop to avoid constant reflow
 	for ( index = 0; index < length; index++ ) {
 		if ( values[ index ] != null ) {
 			elements[ index ].style.display = values[ index ];
@@ -43,6 +79,27 @@ function showHide( elements, show ) {
 	return elements;
 }
 
-return showHide;
+jQuery.fn.extend( {
+	show: function() {
+		return showHide( this, true );
+	},
+	hide: function() {
+		return showHide( this );
+	},
+	toggle: function( state ) {
+		if ( typeof state === "boolean" ) {
+			return state ? this.show() : this.hide();
+		}
 
+		return this.each( function() {
+			if ( isHiddenWithinTree( this ) ) {
+				jQuery( this ).show();
+			} else {
+				jQuery( this ).hide();
+			}
+		} );
+	}
+} );
+
+return showHide;
 } );

src/css/support.js

@@ -5,34 +5,21 @@ define( [
 	"../var/support"
 ], function( jQuery, document, documentElement, support ) {
 
-( function() {
-	var pixelPositionVal, boxSizingReliableVal, pixelMarginRightVal, reliableMarginLeftVal,
-		container = document.createElement( "div" ),
-		div = document.createElement( "div" );
-
-	// Finish early in limited (non-browser) environments
-	if ( !div.style ) {
-		return;
-	}
-
-	// 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";
+"use strict";
 
-	container.style.cssText = "border:0;width:8px;height:0;top:0;left:-9999px;" +
-		"padding:0;margin-top:1px;position:absolute";
-	container.appendChild( div );
+( function() {
 
 	// 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;" +
+		// This is a singleton, we need to execute it only once
+		if ( !div ) {
+			return;
+		}
+
+		div.style.cssText =
+			"box-sizing:border-box;" +
 			"position:relative;display:block;" +
 			"margin:auto;border:1px;padding:1px;" +
 			"top:1%;width:50%";
@@ -41,6 +28,8 @@ define( [
 
 		var divStyle = window.getComputedStyle( div );
 		pixelPositionVal = divStyle.top !== "1%";
+
+		// Support: Android 4.0 - 4.3 only, Firefox <=3 - 44
 		reliableMarginLeftVal = divStyle.marginLeft === "2px";
 		boxSizingReliableVal = divStyle.width === "4px";
 
@@ -50,68 +39,47 @@ define( [
 		pixelMarginRightVal = divStyle.marginRight === "4px";
 
 		documentElement.removeChild( container );
+
+		// Nullify the div so it wouldn't be stored in the memory and
+		// it will also be a sign that checks already performed
+		div = null;
 	}
 
+	var pixelPositionVal, boxSizingReliableVal, pixelMarginRightVal, reliableMarginLeftVal,
+		container = document.createElement( "div" ),
+		div = document.createElement( "div" );
+
+	// Finish early in limited (non-browser) environments
+	if ( !div.style ) {
+		return;
+	}
+
+	// Support: IE <=9 - 11 only
+	// 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.style.cssText = "border:0;width:8px;height:0;top:0;left:-9999px;" +
+		"padding:0;margin-top:1px;position:absolute";
+	container.appendChild( div );
+
 	jQuery.extend( support, {
 		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() {
-			if ( boxSizingReliableVal == null ) {
 			computeStyleTests();
-			}
 			return boxSizingReliableVal;
 		},
 		pixelMarginRight: function() {
-
-			// Support: Android 4.0-4.3
-			// 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;
 		},
 		reliableMarginLeft: function() {
-
-			// Support: IE <=8 only, Android 4.0 - 4.3 only, Firefox <=3 - 37
-			if ( boxSizingReliableVal == null ) {
 			computeStyleTests();
-			}
 			return reliableMarginLeftVal;
-		},
-		reliableMarginRight: function() {
-
-			// Support: Android 2.3
-			// 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
-			// 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
-			marginDiv.style.cssText = div.style.cssText =
-
-				// Support: Android 2.3
-				// Vendor-prefix box-sizing
-				"-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 );
-
-			ret = !parseFloat( window.getComputedStyle( marginDiv ).marginRight );
-
-			documentElement.removeChild( container );
-			div.removeChild( marginDiv );
-
-			return ret;
 		}
 	} );
 } )();

src/css/var/cssExpand.js

 define( function() {
+	"use strict";
+
 	return [ "Top", "Right", "Bottom", "Left" ];
 } );

src/css/var/getStyles.js

 define( function() {
+	"use strict";
+
 	return function( elem ) {
 
-		// Support: IE<=11+, Firefox<=30+ (#15098, #14150)
+		// Support: IE <=11 only, 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;

src/css/var/isHidden.js

-define( [
-	"../../core",
-	"../../selector"
-
-	// css is assumed
-], function( jQuery ) {
-
-	return function( elem, el ) {
-
-		// isHidden might be called from jQuery#filter function;
-		// in that case, element will be second argument
-		elem = el || elem;
-		return jQuery.css( elem, "display" ) === "none" ||
-			!jQuery.contains( elem.ownerDocument, elem );
-	};
-} );

src/css/var/isHiddenWithinTree.js

+define( [
+	"../../core",
+	"../../selector"
+
+	// css is assumed
+], function( jQuery ) {
+	"use strict";
+
+	// isHiddenWithinTree reports if an element has a non-"none" display style (inline and/or
+	// through the CSS cascade), which is useful in deciding whether or not to make it visible.
+	// It differs from the :hidden selector (jQuery.expr.pseudos.hidden) in two important ways:
+	// * A hidden ancestor does not force an element to be classified as hidden.
+	// * Being disconnected from the document does not force an element to be classified as hidden.
+	// These differences improve the behavior of .toggle() et al. when applied to elements that are
+	// detached or contained within hidden ancestors (gh-2404, gh-2863).
+	return function( elem, el ) {
+
+		// isHiddenWithinTree might be called from jQuery#filter function;
+		// in that case, element will be second argument
+		elem = el || elem;
+
+		// Inline style trumps all
+		return elem.style.display === "none" ||
+			elem.style.display === "" &&
+
+			// Otherwise, check computed style
+			// Support: Firefox <=43 - 45
+			// Disconnected elements can have computed display: none, so first confirm that elem is
+			// in the document.
+			jQuery.contains( elem.ownerDocument, elem ) &&
+
+			jQuery.css( elem, "display" ) === "none";
+	};
+} );

src/css/var/rmargin.js

 define( function() {
+	"use strict";
+
 	return ( /^margin/ );
 } );

src/css/var/rnumnonpx.js

 define( [
 	"../../var/pnum"
 ], function( pnum ) {
+	"use strict";
+
 	return new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" );
 } );

src/css/var/swap.js

 define( function() {
 
+"use strict";
+
 // A method for quickly swapping in/out CSS properties to get correct calculations.
 return function( elem, options, callback, args ) {
 	var ret, name,

src/data.js

@@ -5,6 +5,8 @@ define( [
 	"./data/var/dataUser"
 ], function( jQuery, access, dataPriv, dataUser ) {
 
+"use strict";
+
 //	Implementation Summary
 //
 //	1. Enforce API surface and semantic compatibility with 1.9.x branch
@@ -35,7 +37,7 @@ function dataAttr( elem, key, data ) {
 
 					// Only convert to a number if it doesn't change the string
 					+data + "" === data ? +data :
-					rbrace.test( data ) ? jQuery.parseJSON( data ) :
+					rbrace.test( data ) ? JSON.parse( data ) :
 					data;
 			} catch ( e ) {}
 
@@ -87,7 +89,7 @@ jQuery.fn.extend( {
 					i = attrs.length;
 					while ( i-- ) {
 
-						// Support: IE11+
+						// Support: IE 11 only
 						// The attrs elements can be null (#14894)
 						if ( attrs[ i ] ) {
 							name = attrs[ i ].name;
@@ -112,7 +114,7 @@ jQuery.fn.extend( {
 		}
 
 		return access( this, function( value ) {
-			var data, camelKey;
+			var data;
 
 			// The calling jQuery object (element matches) is not empty
 			// (and therefore has an element appears at this[ 0 ]) and the
@@ -122,29 +124,15 @@ jQuery.fn.extend( {
 			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;
-				}
-
-				camelKey = jQuery.camelCase( key );
-
-				// Attempt to get data from the cache
-				// with the key camelized
-				data = dataUser.get( elem, camelKey );
+				// The key will always be camelCased in Data
+				data = dataUser.get( elem, key );
 				if ( data !== undefined ) {
 					return data;
 				}
 
 				// Attempt to "discover" the data in
 				// HTML5 custom data-* attrs
-				data = dataAttr( elem, camelKey, undefined );
+				data = dataAttr( elem, key );
 				if ( data !== undefined ) {
 					return data;
 				}
@@ -154,24 +142,10 @@ jQuery.fn.extend( {
 			}
 
 			// Set the data...
-			camelKey = jQuery.camelCase( key );
 			this.each( function() {
 
-				// 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 ) {
+				// We always store the camelCased key
 				dataUser.set( this, key, value );
-				}
 			} );
 		}, null, value, arguments.length > 1, null, true );
 	},

src/data/Data.js

@@ -4,6 +4,8 @@ define( [
 	"./var/acceptData"
 ], function( jQuery, rnotwhite, acceptData ) {
 
+"use strict";
+
 function Data() {
 	this.expando = jQuery.expando + Data.uid++;
 }
@@ -12,35 +14,8 @@ Data.uid = 1;
 
 Data.prototype = {
 
-	register: function( owner, initial ) {
-		var value = initial || {};
-
-		// If it is a node unlikely to be stringify-ed or looped over
-		// use plain assignment
-		if ( owner.nodeType ) {
-			owner[ this.expando ] = value;
-
-		// Otherwise secure it in a non-enumerable, non-writable property
-		// configurability must be true to allow the property to be
-		// deleted with the delete operator
-		} else {
-			Object.defineProperty( owner, this.expando, {
-				value: value,
-				writable: true,
-				configurable: true
-			} );
-		}
-		return owner[ this.expando ];
-	},
 	cache: function( owner ) {
 
-		// We can accept data for non-element nodes in modern browsers,
-		// but we should not, see #8335.
-		// Always return an empty object.
-		if ( !acceptData( owner ) ) {
-			return {};
-		}
-
 		// Check if the owner object already has a cache
 		var value = owner[ this.expando ];
 
@@ -77,15 +52,16 @@ Data.prototype = {
 			cache = this.cache( owner );
 
 		// Handle: [ owner, key, value ] args
+		// Always use camelCase key (gh-2257)
 		if ( typeof data === "string" ) {
-			cache[ data ] = value;
+			cache[ jQuery.camelCase( data ) ] = value;
 
 		// Handle: [ owner, { properties } ] args
 		} else {
 
 			// Copy the properties one-by-one to the cache object
 			for ( prop in data ) {
-				cache[ prop ] = data[ prop ];
+				cache[ jQuery.camelCase( prop ) ] = data[ prop ];
 			}
 		}
 		return cache;
@@ -93,10 +69,11 @@ Data.prototype = {
 	get: function( owner, key ) {
 		return key === undefined ?
 			this.cache( owner ) :
-			owner[ this.expando ] && owner[ this.expando ][ key ];
+
+			// Always use camelCase key (gh-2257)
+			owner[ this.expando ] && owner[ this.expando ][ jQuery.camelCase( key ) ];
 	},
 	access: function( owner, key, value ) {
-		var stored;
 
 		// In cases where either:
 		//
@@ -112,10 +89,7 @@ Data.prototype = {
 		if ( key === undefined ||
 				( ( key && typeof key === "string" ) && value === undefined ) ) {
 
-			stored = this.get( owner, key );
-
-			return stored !== undefined ?
-				stored : this.get( owner, jQuery.camelCase( key ) );
+			return this.get( owner, key );
 		}
 
 		// When the key is not a string, or both a key and value
@@ -131,58 +105,45 @@ Data.prototype = {
 		return value !== undefined ? value : key;
 	},
 	remove: function( owner, key ) {
-		var i, name, camel,
+		var i,
 			cache = owner[ this.expando ];
 
 		if ( cache === undefined ) {
 			return;
 		}
 
-		if ( key === undefined ) {
-			this.register( owner );
-
-		} else {
+		if ( key !== undefined ) {
 
 			// Support array or space separated string of keys
 			if ( jQuery.isArray( key ) ) {
 
-				// 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 = key.concat( key.map( jQuery.camelCase ) );
-			} else {
-				camel = jQuery.camelCase( key );
-
-				// Try the string as a key before any manipulation
-				if ( key in cache ) {
-					name = [ key, camel ];
+				// If key is an array of keys...
+				// We always set camelCase keys, so remove that.
+				key = key.map( jQuery.camelCase );
 			} else {
+				key = jQuery.camelCase( key );
 
 				// If a key with the spaces exists, use it.
 				// Otherwise, create an array by matching non-whitespace
-					name = camel;
-					name = name in cache ?
-						[ name ] : ( name.match( rnotwhite ) || [] );
-				}
+				key = key in cache ?
+					[ key ] :
+					( key.match( rnotwhite ) || [] );
 			}
 
-			i = name.length;
+			i = key.length;
 
 			while ( i-- ) {
-				delete cache[ name[ i ] ];
+				delete cache[ key[ i ] ];
 			}
 		}
 
 		// Remove the expando if there's no more data
 		if ( key === undefined || jQuery.isEmptyObject( cache ) ) {
 
-			// Support: Chrome <= 35-45+
+			// Support: Chrome <=35 - 45
 			// 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
+			// https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted)
 			if ( owner.nodeType ) {
 				owner[ this.expando ] = undefined;
 			} else {

src/data/var/acceptData.js

 define( function() {
 
+"use strict";
+
 /**
  * Determines whether an object can have data
  */

src/data/var/dataPriv.js

 define( [
 	"../Data"
 ], function( Data ) {
+	"use strict";
+
 	return new Data();
 } );

src/data/var/dataUser.js

 define( [
 	"../Data"
 ], function( Data ) {
+	"use strict";
+
 	return new Data();
 } );

src/deferred/exceptionHook.js

+define( [
+	"../core",
+	"../deferred"
+], function( jQuery ) {
+
+"use strict";
+
+// These usually indicate a programmer mistake during development,
+// warn about them ASAP rather than swallowing them by default.
+var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/;
+
+jQuery.Deferred.exceptionHook = function( error, stack ) {
+
+	// Support: IE 8 - 9 only
+	// Console exists when dev tools are open, which can happen at any time
+	if ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) {
+		window.console.warn( "jQuery.Deferred exception: " + error.message, error.stack, stack );
+	}
+};
+
+} );

src/deprecated.js

@@ -2,6 +2,8 @@ define( [
 	"./core"
 ], function( jQuery ) {
 
+"use strict";
+
 jQuery.fn.extend( {
 
 	bind: function( types, data, fn ) {
@@ -20,13 +22,9 @@ jQuery.fn.extend( {
 		return arguments.length === 1 ?
 			this.off( selector, "**" ) :
 			this.off( types, selector || "**", fn );
-	},
-	size: function() {
-		return this.length;
 	}
 } );
 
-jQuery.fn.andSelf = jQuery.fn.addBack;
+jQuery.parseJSON = JSON.parse;
 
 } );
-

src/dimensions.js

@@ -4,6 +4,8 @@ define( [
 	"./css"
 ], function( jQuery, access ) {
 
+"use strict";
+
 // 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 },
@@ -19,10 +21,10 @@ jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
 
 				if ( jQuery.isWindow( elem ) ) {
 
-					// As of 5/8/2012 this will yield incorrect results for Mobile Safari, but there
-					// isn't a whole lot we can do. See pull request at this URL for discussion:
-					// https://github.com/jquery/jquery/pull/764
-					return elem.document.documentElement[ "client" + name ];
+					// $( window ).outerWidth/Height return w/h including scrollbars (gh-1729)
+					return funcName.indexOf( "outer" ) === 0 ?
+						elem[ "inner" + name ] :
+						elem.document.documentElement[ "client" + name ];
 				}
 
 				// Get document width or height
@@ -45,7 +47,7 @@ jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
 
 					// Set width or height on the element
 					jQuery.style( elem, type, value, extra );
-			}, type, chainable ? margin : undefined, chainable, null );
+			}, type, chainable ? margin : undefined, chainable );
 		};
 	} );
 } );

src/effects.js

@@ -2,27 +2,38 @@ define( [
 	"./core",
 	"./var/document",
 	"./var/rcssNum",
-	"./css/var/cssExpand",
 	"./var/rnotwhite",
-	"./css/var/isHidden",
+	"./css/var/cssExpand",
+	"./css/var/isHiddenWithinTree",
+	"./css/var/swap",
 	"./css/adjustCSS",
-	"./css/defaultDisplay",
 	"./data/var/dataPriv",
+	"./css/showHide",
 
 	"./core/init",
-	"./effects/Tween",
 	"./queue",
-	"./css",
 	"./deferred",
-	"./traversing"
-], function( jQuery, document, rcssNum, cssExpand, rnotwhite,
-	isHidden, adjustCSS, defaultDisplay, dataPriv ) {
+	"./traversing",
+	"./manipulation",
+	"./css",
+	"./effects/Tween"
+], function( jQuery, document, rcssNum, rnotwhite, cssExpand, isHiddenWithinTree, swap,
+	adjustCSS, dataPriv, showHide ) {
+
+"use strict";
 
 var
 	fxNow, timerId,
 	rfxtypes = /^(?:toggle|show|hide)$/,
 	rrun = /queueHooks$/;
 
+function raf() {
+	if ( timerId ) {
+		window.requestAnimationFrame( raf );
+		jQuery.fx.tick();
+	}
+}
+
 // Animations created synchronously will run synchronously
 function createFxNow() {
 	window.setTimeout( function() {
@@ -68,14 +79,15 @@ function createTween( value, prop, animation ) {
 
 function defaultPrefilter( elem, props, opts ) {
 	/* jshint validthis: true */
-	var prop, value, toggle, tween, hooks, oldfire, display, checkDisplay,
+	var prop, value, toggle, hooks, oldfire, propTween, restoreDisplay, display,
+		isBox = "width" in props || "height" in props,
 		anim = this,
 		orig = {},
 		style = elem.style,
-		hidden = elem.nodeType && isHidden( elem ),
+		hidden = elem.nodeType && isHiddenWithinTree( elem ),
 		dataShow = dataPriv.get( elem, "fxshow" );
 
-	// Handle queue: false promises
+	// Queue-skipping animations hijack the fx hooks
 	if ( !opts.queue ) {
 		hooks = jQuery._queueHooks( elem, "fx" );
 		if ( hooks.unqueued == null ) {
@@ -101,27 +113,79 @@ function defaultPrefilter( elem, props, opts ) {
 		} );
 	}
 
-	// Height/width overflow pass
-	if ( elem.nodeType === 1 && ( "height" in props || "width" in props ) ) {
+	// Detect show/hide animations
+	for ( prop in props ) {
+		value = props[ prop ];
+		if ( rfxtypes.test( value ) ) {
+			delete props[ prop ];
+			toggle = toggle || value === "toggle";
+			if ( value === ( hidden ? "hide" : "show" ) ) {
+
+				// Pretend to be hidden if this is a "show" and
+				// there is still data from a stopped show/hide
+				if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) {
+					hidden = true;
+
+				// Ignore all other no-op show/hide data
+				} else {
+					continue;
+				}
+			}
+			orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop );
+		}
+	}
+
+	// Bail out if this is a no-op like .hide().hide()
+	propTween = !jQuery.isEmptyObject( props );
+	if ( !propTween && jQuery.isEmptyObject( orig ) ) {
+		return;
+	}
+
+	// Restrict "overflow" and "display" styles during box animations
+	if ( isBox && elem.nodeType === 1 ) {
 
-		// Make sure that nothing sneaks out
-		// Record all 3 overflow attributes because IE9-10 do not
-		// change the overflow attribute when overflowX and
-		// overflowY are set to the same value
+		// Support: IE <=9 - 11, Edge 12 - 13
+		// Record all 3 overflow attributes because IE does not infer the shorthand
+		// from identically-valued overflowX and overflowY
 		opts.overflow = [ style.overflow, style.overflowX, style.overflowY ];
 
-		// Set display property to inline-block for height/width
-		// animations on inline elements that are having width/height animated
+		// Identify a display type, preferring old show/hide data over the CSS cascade
+		restoreDisplay = dataShow && dataShow.display;
+		if ( restoreDisplay == null ) {
+			restoreDisplay = dataPriv.get( elem, "display" );
+		}
 		display = jQuery.css( elem, "display" );
+		if ( display === "none" ) {
+			if ( restoreDisplay ) {
+				display = restoreDisplay;
+			} else {
 
-		// Test default display if display is currently "none"
-		checkDisplay = display === "none" ?
-			dataPriv.get( elem, "olddisplay" ) || defaultDisplay( elem.nodeName ) : display;
+				// Get nonempty value(s) by temporarily forcing visibility
+				showHide( [ elem ], true );
+				restoreDisplay = elem.style.display || restoreDisplay;
+				display = jQuery.css( elem, "display" );
+				showHide( [ elem ] );
+			}
+		}
 
-		if ( checkDisplay === "inline" && jQuery.css( elem, "float" ) === "none" ) {
+		// Animate inline elements as inline-block
+		if ( display === "inline" || display === "inline-block" && restoreDisplay != null ) {
+			if ( jQuery.css( elem, "float" ) === "none" ) {
+
+				// Restore the original display value at the end of pure show/hide animations
+				if ( !propTween ) {
+					anim.done( function() {
+						style.display = restoreDisplay;
+					} );
+					if ( restoreDisplay == null ) {
+						display = style.display;
+						restoreDisplay = display === "none" ? "" : display;
+					}
+				}
 				style.display = "inline-block";
 			}
 		}
+	}
 
 	if ( opts.overflow ) {
 		style.overflow = "hidden";
@@ -132,73 +196,53 @@ function defaultPrefilter( elem, props, opts ) {
 		} );
 	}
 
-	// show/hide pass
-	for ( prop in props ) {
-		value = props[ prop ];
-		if ( rfxtypes.exec( value ) ) {
-			delete props[ prop ];
-			toggle = toggle || value === "toggle";
-			if ( value === ( hidden ? "hide" : "show" ) ) {
-
-				// If there is dataShow left over from a stopped hide or show
-				// and we are going to proceed with show, we should pretend to be hidden
-				if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) {
-					hidden = true;
-				} else {
-					continue;
-				}
-			}
-			orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop );
-
-		// Any non-fx value stops us from restoring the original display value
-		} else {
-			display = undefined;
-		}
-	}
+	// Implement show/hide animations
+	propTween = false;
+	for ( prop in orig ) {
 
-	if ( !jQuery.isEmptyObject( orig ) ) {
+		// General show/hide setup for this element animation
+		if ( !propTween ) {
 			if ( dataShow ) {
 				if ( "hidden" in dataShow ) {
 					hidden = dataShow.hidden;
 				}
 			} else {
-			dataShow = dataPriv.access( elem, "fxshow", {} );
+				dataShow = dataPriv.access( elem, "fxshow", { display: restoreDisplay } );
 			}
 
-		// Store state if its toggle - enables .stop().toggle() to "reverse"
+			// Store hidden/visible for toggle so `.stop().toggle()` "reverses"
 			if ( toggle ) {
 				dataShow.hidden = !hidden;
 			}
+
+			// Show elements before animating them
 			if ( hidden ) {
-			jQuery( elem ).show();
-		} else {
-			anim.done( function() {
-				jQuery( elem ).hide();
-			} );
+				showHide( [ elem ], true );
 			}
+
+			/* jshint -W083 */
 			anim.done( function() {
-			var prop;
 
+				// The final step of a "hide" animation is actually hiding the element
+				if ( !hidden ) {
+					showHide( [ elem ] );
+				}
 				dataPriv.remove( elem, "fxshow" );
 				for ( prop in orig ) {
 					jQuery.style( elem, prop, orig[ prop ] );
 				}
 			} );
-		for ( prop in orig ) {
-			tween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim );
+		}
 
+		// Per-property setup
+		propTween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim );
 		if ( !( prop in dataShow ) ) {
-				dataShow[ prop ] = tween.start;
+			dataShow[ prop ] = propTween.start;
 			if ( hidden ) {
-					tween.end = tween.start;
-					tween.start = prop === "width" || prop === "height" ? 1 : 0;
-				}
+				propTween.end = propTween.start;
+				propTween.start = 0;
 			}
 		}
-
-	// If this is a noop like .hide().hide(), restore an overwritten display value
-	} else if ( ( display === "none" ? defaultDisplay( elem.nodeName ) : display ) === "inline" ) {
-		style.display = display;
 	}
 }
 
@@ -256,7 +300,7 @@ function Animation( elem, properties, options ) {
 			var currentTime = fxNow || createFxNow(),
 				remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ),
 
-				// Support: Android 2.3
+				// Support: Android 2.3 only
 				// Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (#12497)
 				temp = remaining / animation.duration || 0,
 				percent = 1 - temp,
@@ -355,6 +399,7 @@ function Animation( elem, properties, options ) {
 }
 
 jQuery.Animation = jQuery.extend( Animation, {
+
 	tweeners: {
 		"*": [ function( prop, value ) {
 			var tween = this.createTween( prop, value );
@@ -401,9 +446,15 @@ jQuery.speed = function( speed, easing, fn ) {
 		easing: fn && easing || easing && !jQuery.isFunction( easing ) && easing
 	};
 
-	opt.duration = jQuery.fx.off ? 0 : typeof opt.duration === "number" ?
+	// Go to the end state if fx are off or if document is hidden
+	if ( jQuery.fx.off || document.hidden ) {
+		opt.duration = 0;
+
+	} else {
+		opt.duration = 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"
 	if ( opt.queue == null || opt.queue === true ) {
@@ -430,7 +481,7 @@ jQuery.fn.extend( {
 	fadeTo: function( speed, to, easing, callback ) {
 
 		// Show any hidden elements after setting opacity to 0
-		return this.filter( isHidden ).css( "opacity", 0 ).show()
+		return this.filter( isHiddenWithinTree ).css( "opacity", 0 ).show()
 
 			// Animate to the value specified
 			.end().animate( { opacity: to }, speed, easing, callback );
@@ -607,12 +658,18 @@ jQuery.fx.timer = function( timer ) {
 jQuery.fx.interval = 13;
 jQuery.fx.start = function() {
 	if ( !timerId ) {
-		timerId = window.setInterval( jQuery.fx.tick, jQuery.fx.interval );
+		timerId = window.requestAnimationFrame ?
+			window.requestAnimationFrame( raf ) :
+			window.setInterval( jQuery.fx.tick, jQuery.fx.interval );
 	}
 };
 
 jQuery.fx.stop = function() {
+	if ( window.cancelAnimationFrame ) {
+		window.cancelAnimationFrame( timerId );
+	} else {
 		window.clearInterval( timerId );
+	}
 
 	timerId = null;
 };

src/effects/Tween.js

@@ -3,6 +3,8 @@ define( [
 	"../css"
 ], function( jQuery ) {
 
+"use strict";
+
 function Tween( elem, options, prop, end, easing ) {
 	return new Tween.prototype.init( elem, options, prop, end, easing );
 }
@@ -93,7 +95,7 @@ Tween.propHooks = {
 	}
 };
 
-// Support: IE9
+// Support: IE <=9 only
 // Panic based approach to setting things on disconnected nodes
 Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {
 	set: function( tween ) {
@@ -115,7 +117,7 @@ jQuery.easing = {
 
 jQuery.fx = Tween.prototype.init;
 
-// Back Compat <1.8 extension point
+// Back compat <1.8 extension point
 jQuery.fx.step = {};
 
 } );

src/effects/animatedSelector.js

@@ -4,7 +4,9 @@ define( [
 	"../effects"
 ], function( jQuery ) {
 
-jQuery.expr.filters.animated = function( elem ) {
+"use strict";
+
+jQuery.expr.pseudos.animated = function( elem ) {
 	return jQuery.grep( jQuery.timers, function( fn ) {
 		return elem === fn.elem;
 	} ).length;

src/event.js

 define( [
 	"./core",
 	"./var/document",
+	"./var/documentElement",
 	"./var/rnotwhite",
 	"./var/slice",
 	"./data/var/dataPriv",
 
 	"./core/init",
 	"./selector"
-], function( jQuery, document, rnotwhite, slice, dataPriv ) {
+], function( jQuery, document, documentElement, rnotwhite, slice, dataPriv ) {
+
+"use strict";
 
 var
 	rkeyEvent = /^key/,
@@ -22,7 +25,7 @@ function returnFalse() {
 	return false;
 }
 
-// Support: IE9
+// Support: IE <=9 only
 // See #13393 for more info
 function safeActiveElement() {
 	try {
@@ -118,6 +121,12 @@ jQuery.event = {
 			selector = handleObjIn.selector;
 		}
 
+		// Ensure that invalid selectors throw exceptions at attach time
+		// Evaluate against documentElement in case elem is a non-element node (e.g., document)
+		if ( selector ) {
+			jQuery.find.matchesSelector( documentElement, selector );
+		}
+
 		// Make sure that the handler has a unique ID, used to find/remove it later
 		if ( !handler.guid ) {
 			handler.guid = jQuery.guid++;
@@ -281,19 +290,23 @@ jQuery.event = {
 		}
 	},
 
-	dispatch: function( event ) {
+	dispatch: function( nativeEvent ) {
 
 		// Make a writable jQuery.Event from the native event object
-		event = jQuery.event.fix( event );
+		var event = jQuery.event.fix( nativeEvent );
 
-		var i, j, ret, matched, handleObj,
-			handlerQueue = [],
-			args = slice.call( arguments ),
+		var i, j, ret, matched, handleObj, handlerQueue,
+			args = new Array( arguments.length ),
 			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
 		args[ 0 ] = event;
+
+		for ( i = 1; i < arguments.length; i++ ) {
+			args[ i ] = arguments[ i ];
+		}
+
 		event.delegateTarget = this;
 
 		// Call the preDispatch hook for the mapped type, and let it bail if desired
@@ -347,11 +360,11 @@ jQuery.event = {
 			delegateCount = handlers.delegateCount,
 			cur = event.target;
 
-		// Support (at least): Chrome, IE9
+		// Support: IE <=9
 		// Find delegate handlers
 		// Black-hole SVG <use> instance trees (#13180)
 		//
-		// Support: Firefox<=42+
+		// Support: Firefox <=42
 		// Avoid non-left-click in FF but don't block IE radio events (#3861, gh-2343)
 		if ( delegateCount && cur.nodeType &&
 			( event.type !== "click" || isNaN( event.button ) || event.button < 1 ) ) {
@@ -392,96 +405,38 @@ jQuery.event = {
 		return handlerQueue;
 	},
 
-	// 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( " " ),
-
-	fixHooks: {},
+	addProp: function( name, hook ) {
+		Object.defineProperty( jQuery.Event.prototype, name, {
+			enumerable: true,
+			configurable: true,
 
-	keyHooks: {
-		props: "char charCode key keyCode".split( " " ),
-		filter: function( event, original ) {
-
-			// Add which for key events
-			if ( event.which == null ) {
-				event.which = original.charCode != null ? original.charCode : original.keyCode;
+			get: jQuery.isFunction( hook ) ?
+				function() {
+					if ( this.originalEvent ) {
+							return hook( this.originalEvent );
 					}
-
-			return event;
+				} :
+				function() {
+					if ( this.originalEvent ) {
+							return this.originalEvent[ name ];
 					}
 				},
 
-	mouseHooks: {
-		props: ( "button buttons clientX clientY offsetX offsetY pageX pageY " +
-			"screenX screenY toElement" ).split( " " ),
-		filter: function( event, original ) {
-			var eventDoc, doc, body,
-				button = original.button;
-
-			// Calculate pageX/Y if missing and clientX/Y available
-			if ( event.pageX == null && original.clientX != null ) {
-				eventDoc = event.target.ownerDocument || document;
-				doc = eventDoc.documentElement;
-				body = eventDoc.body;
-
-				event.pageX = original.clientX +
-					( doc && doc.scrollLeft || body && body.scrollLeft || 0 ) -
-					( doc && doc.clientLeft || body && body.clientLeft || 0 );
-				event.pageY = original.clientY +
-					( doc && doc.scrollTop  || body && body.scrollTop  || 0 ) -
-					( doc && doc.clientTop  || body && body.clientTop  || 0 );
-			}
-
-			// 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 ) {
-				event.which = ( button & 1 ? 1 : ( button & 2 ? 3 : ( button & 4 ? 2 : 0 ) ) );
-			}
-
-			return event;
+			set: function( value ) {
+				Object.defineProperty( this, name, {
+					enumerable: true,
+					configurable: true,
+					writable: true,
+					value: value
+				} );
 			}
+		} );
 	},
 
-	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;
+	fix: function( originalEvent ) {
+		return originalEvent[ jQuery.expando ] ?
+			originalEvent :
+			new jQuery.Event( originalEvent );
 	},
 
 	special: {
@@ -564,11 +519,21 @@ jQuery.Event = function( src, props ) {
 		this.isDefaultPrevented = src.defaultPrevented ||
 				src.defaultPrevented === undefined &&
 
-				// Support: Android<4.0
+				// Support: Android <=2.3 only
 				src.returnValue === false ?
 			returnTrue :
 			returnFalse;
 
+		// Create target properties
+		// Support: Safari <=6 - 7 only
+		// Target should not be a text node (#504, #13143)
+		this.target = ( src.target.nodeType === 3 ) ?
+			src.target.parentNode :
+			src.target;
+
+		this.currentTarget = src.currentTarget;
+		this.relatedTarget = src.relatedTarget;
+
 	// Event type
 	} else {
 		this.type = src;
@@ -587,7 +552,7 @@ jQuery.Event = function( src, props ) {
 };
 
 // jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
-// http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
+// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
 jQuery.Event.prototype = {
 	constructor: jQuery.Event,
 	isDefaultPrevented: returnFalse,
@@ -626,13 +591,60 @@ jQuery.Event.prototype = {
 	}
 };
 
+// Includes all common event props including KeyEvent and MouseEvent specific props
+jQuery.each( {
+	altKey: true,
+	bubbles: true,
+	cancelable: true,
+	changedTouches: true,
+	ctrlKey: true,
+	detail: true,
+	eventPhase: true,
+	metaKey: true,
+	pageX: true,
+	pageY: true,
+	shiftKey: true,
+	view: true,
+	"char": true,
+	charCode: true,
+	key: true,
+	keyCode: true,
+	button: true,
+	buttons: true,
+	clientX: true,
+	clientY: true,
+	offsetX: true,
+	offsetY: true,
+	screenX: true,
+	screenY: true,
+	targetTouches: true,
+	toElement: true,
+	touches: true,
+
+	which: function( event ) {
+		var button = event.button;
+
+		// Add which for key events
+		if ( event.which == null && rkeyEvent.test( event.type ) ) {
+			return event.charCode != null ? event.charCode : event.keyCode;
+		}
+
+		// Add which for click: 1 === left; 2 === middle; 3 === right
+		if ( !event.which && button !== undefined && rmouseEvent.test( event.type ) ) {
+			return ( button & 1 ? 1 : ( button & 2 ? 3 : ( button & 4 ? 2 : 0 ) ) );
+		}
+
+		return event.which;
+	}
+}, jQuery.event.addProp );
+
 // Create mouseenter/leave events using mouseover/out and event-time checks
 // so that event delegation works in jQuery.
 // Do the same for pointerenter/pointerleave and pointerover/pointerout
 //
 // Support: Safari 7 only
 // Safari sends mouseenter too often; see:
-// https://code.google.com/p/chromium/issues/detail?id=470258
+// https://bugs.chromium.org/p/chromium/issues/detail?id=470258
 // for the description of the bug (it existed in older Chrome versions as well).
 jQuery.each( {
 	mouseenter: "mouseover",
@@ -663,6 +675,7 @@ jQuery.each( {
 } );
 
 jQuery.fn.extend( {
+
 	on: function( types, selector, data, fn ) {
 		return on( this, types, selector, data, fn );
 	},

src/event/ajax.js

@@ -3,6 +3,8 @@ define( [
 	"../event"
 ], function( jQuery ) {
 
+"use strict";
+
 // Attach a bunch of functions for handling common AJAX events
 jQuery.each( [
 	"ajaxStart",

src/event/alias.js

@@ -5,9 +5,11 @@ define( [
 	"./trigger"
 ], function( jQuery ) {
 
-jQuery.each( ( "blur focus focusin focusout load resize scroll unload click dblclick " +
+"use strict";
+
+jQuery.each( ( "blur focus focusin focusout resize scroll click dblclick " +
 	"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
-	"change select submit keydown keypress keyup error contextmenu" ).split( " " ),
+	"change select submit keydown keypress keyup contextmenu" ).split( " " ),
 	function( i, name ) {
 
 	// Handle event binding

src/event/focusin.js

@@ -7,14 +7,16 @@ define( [
 	"./trigger"
 ], function( jQuery, dataPriv, support ) {
 
-// Support: Firefox
+"use strict";
+
+// Support: Firefox <=44
 // Firefox doesn't have focus(in | out) events
 // Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787
 //
-// Support: Chrome, Safari
+// Support: Chrome <=48 - 49, Safari <=9.0 - 9.1
 // 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
+// Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857
 if ( !support.focusin ) {
 	jQuery.each( { focus: "focusin", blur: "focusout" }, function( orig, fix ) {
 

src/event/support.js

@@ -2,6 +2,8 @@ define( [
 	"../var/support"
 ], function( support ) {
 
+"use strict";
+
 support.focusin = "onfocusin" in window;
 
 return support;

src/event/trigger.js

@@ -8,6 +8,8 @@ define( [
 	"../event"
 ], function( jQuery, document, dataPriv, acceptData, hasOwn ) {
 
+"use strict";
+
 var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/;
 
 jQuery.extend( jQuery.event, {
@@ -121,7 +123,7 @@ jQuery.extend( jQuery.event, {
 				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.
+				// Call a native DOM method on the target with the same name as the event.
 				// Don't do default actions on window, that's where global variables be (#6170)
 				if ( ontype && jQuery.isFunction( elem[ type ] ) && !jQuery.isWindow( elem ) ) {
 

src/exports/amd.js

@@ -2,6 +2,8 @@ define( [
 	"../core"
 ], function( jQuery ) {
 
+"use strict";
+
 // Register as a named AMD module, since jQuery can be concatenated with other
 // files that may use define, but not via a proper concatenation script that
 // understands anonymous AMD modules. A named AMD is safest and most robust

src/exports/global.js

+/* ExcludeStart */
+
+// This file is included in a different way from all the others
+// so the "use strict" pragma is not needed.
+/* jshint strict: false */
+
+/* ExcludeEnd */
+
 var
 
 	// Map over jQuery in case of overwrite

src/intro.js

-/*!
- * jQuery JavaScript Library v@VERSION
- * http://jquery.com/
- *
- * Includes Sizzle.js
- * http://sizzlejs.com/
- *
- * Copyright jQuery Foundation and other contributors
- * Released under the MIT license
- * http://jquery.org/license
- *
- * Date: @DATE
- */
-
-(function( global, factory ) {
-
-	if ( typeof module === "object" && typeof module.exports === "object" ) {
-		// For CommonJS and CommonJS-like environments where a proper `window`
-		// is present, execute the factory and get jQuery.
-		// For environments that do not have a `window` with a `document`
-		// (such as Node.js), expose a factory as module.exports.
-		// This accentuates the need for the creation of a real `window`.
-		// e.g. var jQuery = require("jquery")(window);
-		// See ticket #14549 for more info.
-		module.exports = global.document ?
-			factory( global, true ) :
-			function( w ) {
-				if ( !w.document ) {
-					throw new Error( "jQuery requires a window with a document" );
-				}
-				return factory( w );
-			};
-	} else {
-		factory( global );
-	}
-
-// Pass this if window is not defined yet
-}(typeof window !== "undefined" ? window : this, function( window, noGlobal ) {
-
-// Support: Firefox 18+
-// Can't be in strict mode, several libs including ASP.NET trace
-// the stack via arguments.caller.callee and Firefox dies if
-// you try to trace through "use strict" call chains. (#13335)
-//"use strict";

src/jquery.js

@@ -4,6 +4,7 @@ define( [
 	"./traversing",
 	"./callbacks",
 	"./deferred",
+	"./deferred/exceptionHook",
 	"./core/ready",
 	"./data",
 	"./queue",
@@ -32,6 +33,8 @@ define( [
 	"./exports/amd"
 ], function( jQuery ) {
 
+"use strict";
+
 return ( window.jQuery = window.$ = jQuery );
 
 } );

src/manipulation.js

@@ -15,6 +15,7 @@ define( [
 	"./data/var/dataPriv",
 	"./data/var/dataUser",
 	"./data/var/acceptData",
+	"./core/DOMEval",
 
 	"./core/init",
 	"./traversing",
@@ -23,12 +24,14 @@ define( [
 ], function( jQuery, concat, push, access,
 	rcheckableType, rtagName, rscriptType,
 	wrapMap, getAll, setGlobalEval, buildFragment, support,
-	dataPriv, dataUser, acceptData ) {
+	dataPriv, dataUser, acceptData, DOMEval ) {
+
+"use strict";
 
 var
-	rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:-]+)[^>]*)\/>/gi,
+	rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([a-z][^\/\0>\x20\t\r\n\f]*)[^>]*)\/>/gi,
 
-	// Support: IE 10-11, Edge 10240+
+	// Support: IE <=10 - 11, Edge 12 - 13
 	// In IE/Edge using regex groups here causes severe slowdowns.
 	// See https://connect.microsoft.com/IE/feedback/details/1736512/
 	rnoInnerhtml = /<script|<style|<link/i,
@@ -38,14 +41,14 @@ var
 	rscriptTypeMasked = /^true\/(.*)/,
 	rcleanScript = /^\s*<!(?:\[CDATA\[|--)|(?:\]\]|--)>\s*$/g;
 
-// Manipulating tables requires a tbody
 function manipulationTarget( elem, content ) {
-	return jQuery.nodeName( elem, "table" ) &&
-		jQuery.nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ?
+	if ( jQuery.nodeName( elem, "table" ) &&
+		jQuery.nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ) {
+
+		return elem.getElementsByTagName( "tbody" )[ 0 ] || elem;
+	}
 
-		elem.getElementsByTagName( "tbody" )[ 0 ] ||
-			elem.appendChild( elem.ownerDocument.createElement( "tbody" ) ) :
-		elem;
+	return elem;
 }
 
 // Replace/restore the type attribute of script elements for safe DOM manipulation
@@ -163,7 +166,7 @@ function domManip( collection, args, callback, ignored ) {
 					// Keep references to cloned scripts for later restoration
 					if ( hasScripts ) {
 
-						// Support: Android<4.1, PhantomJS<2
+						// Support: Android <=4.0 only, PhantomJS 1 only
 						// push.apply(_, arraylike) throws on ancient WebKit
 						jQuery.merge( scripts, getAll( node, "script" ) );
 					}
@@ -192,7 +195,7 @@ function domManip( collection, args, callback, ignored ) {
 								jQuery._evalUrl( node.src );
 							}
 						} else {
-							jQuery.globalEval( node.textContent.replace( rcleanScript, "" ) );
+							DOMEval( node.textContent.replace( rcleanScript, "" ), doc );
 						}
 					}
 				}
@@ -238,7 +241,7 @@ jQuery.extend( {
 		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
+			// We eschew Sizzle here for performance reasons: https://jsperf.com/getall-vs-sizzle/2
 			destElements = getAll( clone );
 			srcElements = getAll( elem );
 
@@ -291,13 +294,13 @@ jQuery.extend( {
 						}
 					}
 
-					// Support: Chrome <= 35-45+
+					// Support: Chrome <=35 - 45+
 					// Assign undefined instead of using delete, see Data#remove
 					elem[ dataPriv.expando ] = undefined;
 				}
 				if ( elem[ dataUser.expando ] ) {
 
-					// Support: Chrome <= 35-45+
+					// Support: Chrome <=35 - 45+
 					// Assign undefined instead of using delete, see Data#remove
 					elem[ dataUser.expando ] = undefined;
 				}
@@ -307,10 +310,6 @@ jQuery.extend( {
 } );
 
 jQuery.fn.extend( {
-
-	// Keep domManip exposed until 3.0 (gh-2225)
-	domManip: domManip,
-
 	detach: function( selector ) {
 		return remove( this, selector, true );
 	},
@@ -468,8 +467,8 @@ jQuery.each( {
 			elems = i === last ? this : this.clone( true );
 			jQuery( insert[ i ] )[ original ]( elems );
 
-			// Support: QtWebKit
-			// .get() because push.apply(_, arraylike) throws
+			// Support: Android <=4.0 only, PhantomJS 1 only
+			// .get() because push.apply(_, arraylike) throws on ancient WebKit
 			push.apply( ret, elems.get() );
 		}
 

src/manipulation/_evalUrl.js

@@ -2,6 +2,8 @@ define( [
 	"../ajax"
 ], function( jQuery ) {
 
+"use strict";
+
 jQuery._evalUrl = function( url ) {
 	return jQuery.ajax( {
 		url: url,
@@ -9,6 +11,7 @@ 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

@@ -7,6 +7,8 @@ define( [
 	"./setGlobalEval"
 ], function( jQuery, rtagName, rscriptType, wrapMap, getAll, setGlobalEval ) {
 
+"use strict";
+
 var rhtml = /<|&#?\w+;/;
 
 function buildFragment( elems, context, scripts, selection, ignored ) {
@@ -24,7 +26,7 @@ function buildFragment( elems, context, scripts, selection, ignored ) {
 			// Add nodes directly
 			if ( jQuery.type( elem ) === "object" ) {
 
-				// Support: Android<4.1, PhantomJS<2
+				// Support: Android <=4.0 only, PhantomJS 1 only
 				// push.apply(_, arraylike) throws on ancient WebKit
 				jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem );
 
@@ -47,7 +49,7 @@ function buildFragment( elems, context, scripts, selection, ignored ) {
 					tmp = tmp.lastChild;
 				}
 
-				// Support: Android<4.1, PhantomJS<2
+				// Support: Android <=4.0 only, PhantomJS 1 only
 				// push.apply(_, arraylike) throws on ancient WebKit
 				jQuery.merge( nodes, tmp.childNodes );
 

src/manipulation/getAll.js

@@ -2,9 +2,11 @@ define( [
 	"../core"
 ], function( jQuery ) {
 
+"use strict";
+
 function getAll( context, tag ) {
 
-	// Support: IE9-11+
+	// Support: IE <=9 - 11 only
 	// Use typeof to avoid zero-argument method invocation on host objects (#15151)
 	var ret = typeof context.getElementsByTagName !== "undefined" ?
 			context.getElementsByTagName( tag || "*" ) :

src/manipulation/setGlobalEval.js

@@ -2,6 +2,8 @@ define( [
 	"../data/var/dataPriv"
 ], function( dataPriv ) {
 
+"use strict";
+
 // Mark scripts as having already been evaluated
 function setGlobalEval( elems, refElements ) {
 	var i = 0,

src/manipulation/support.js

@@ -3,12 +3,14 @@ define( [
 	"../var/support"
 ], function( document, support ) {
 
+"use strict";
+
 ( function() {
 	var fragment = document.createDocumentFragment(),
 		div = fragment.appendChild( document.createElement( "div" ) ),
 		input = document.createElement( "input" );
 
-	// Support: Android 4.0-4.3, Safari<=5.1
+	// Support: Android 4.0 - 4.3 only
 	// Check state lost if the name is set (#11217)
 	// Support: Windows Web Apps (WWA)
 	// `name` and `type` must use .setAttribute for WWA (#14901)
@@ -18,11 +20,11 @@ define( [
 
 	div.appendChild( input );
 
-	// Support: Safari<=5.1, Android<4.2
+	// Support: Android <=4.1 only
 	// Older WebKit doesn't clone checked state correctly in fragments
 	support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked;
 
-	// Support: IE<=11+
+	// Support: IE <=11 only
 	// Make sure textarea (and checkbox) defaultValue is properly cloned
 	div.innerHTML = "<textarea>x</textarea>";
 	support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue;

src/manipulation/var/rcheckableType.js

 define( function() {
+	"use strict";
+
 	return ( /^(?:checkbox|radio)$/i );
 } );

src/manipulation/var/rscriptType.js

 define( function() {
+	"use strict";
+
 	return ( /^$|\/(?:java|ecma)script/i );
 } );

src/manipulation/var/rtagName.js

 define( function() {
-	return ( /<([\w:-]+)/ );
+	"use strict";
+
+	return ( /<([a-z][^\/\0>\x20\t\r\n\f]+)/i );
 } );

src/manipulation/wrapMap.js

 define( function() {
 
+"use strict";
+
 // We have to close these tags to support XHTML (#13200)
 var wrapMap = {
 
-	// Support: IE9
+	// Support: IE <=9 only
 	option: [ 1, "<select multiple='multiple'>", "</select>" ],
 
 	// XHTML parsers do not magically insert elements in the
@@ -17,7 +19,7 @@ var wrapMap = {
 	_default: [ 0, "", "" ]
 };
 
-// Support: IE9
+// Support: IE <=9 only
 wrapMap.optgroup = wrapMap.option;
 
 wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;

src/offset.js

@@ -13,6 +13,8 @@ define( [
 	"./selector" // contains
 ], function( jQuery, access, document, documentElement, rnumnonpx, curCSS, addGetHookIf, support ) {
 
+"use strict";
+
 /**
  * Gets a window from an element
  */
@@ -74,6 +76,8 @@ jQuery.offset = {
 
 jQuery.fn.extend( {
 	offset: function( options ) {
+
+		// Preserve chaining for setter
 		if ( arguments.length ) {
 			return options === undefined ?
 				this :
@@ -82,28 +86,36 @@ jQuery.fn.extend( {
 				} );
 		}
 
-		var docElem, win,
-			elem = this[ 0 ],
-			box = { top: 0, left: 0 },
-			doc = elem && elem.ownerDocument;
+		var docElem, win, rect, doc,
+			elem = this[ 0 ];
 
-		if ( !doc ) {
+		if ( !elem ) {
 			return;
 		}
 
-		docElem = doc.documentElement;
-
-		// Make sure it's not a disconnected DOM node
-		if ( !jQuery.contains( docElem, elem ) ) {
-			return box;
+		// Support: IE <=11 only
+		// Running getBoundingClientRect on a
+		// disconnected node in IE throws an error
+		if ( !elem.getClientRects().length ) {
+			return { top: 0, left: 0 };
 		}
 
-		box = elem.getBoundingClientRect();
+		rect = elem.getBoundingClientRect();
+
+		// Make sure element is not hidden (display: none)
+		if ( rect.width || rect.height ) {
+			doc = elem.ownerDocument;
 			win = getWindow( doc );
+			docElem = doc.documentElement;
+
 			return {
-			top: box.top + win.pageYOffset - docElem.clientTop,
-			left: box.left + win.pageXOffset - docElem.clientLeft
+				top: rect.top + win.pageYOffset - docElem.clientTop,
+				left: rect.left + win.pageXOffset - docElem.clientLeft
 			};
+		}
+
+		// Return zeros for disconnected and hidden elements (gh-2310)
+		return rect;
 	},
 
 	position: function() {
@@ -134,8 +146,10 @@ jQuery.fn.extend( {
 			}
 
 			// Add offsetParent borders
-			parentOffset.top += jQuery.css( offsetParent[ 0 ], "borderTopWidth", true );
-			parentOffset.left += jQuery.css( offsetParent[ 0 ], "borderLeftWidth", true );
+			parentOffset = {
+				top: parentOffset.top + jQuery.css( offsetParent[ 0 ], "borderTopWidth", true ),
+				left: parentOffset.left + jQuery.css( offsetParent[ 0 ], "borderLeftWidth", true )
+			};
 		}
 
 		// Subtract parent offsets and element margins
@@ -193,10 +207,10 @@ jQuery.each( { scrollLeft: "pageXOffset", scrollTop: "pageYOffset" }, function(
 	};
 } );
 
-// Support: Safari<7-8+, Chrome<37-44+
+// Support: Safari <=7 - 9.1, Chrome <=37 - 49
 // Add the top/left cssHooks using jQuery.fn.position
 // Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084
-// Blink bug: https://code.google.com/p/chromium/issues/detail?id=229280
+// Blink bug: https://bugs.chromium.org/p/chromium/issues/detail?id=589347
 // 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 ) {

src/outro.js

-return jQuery;
-}));

src/queue.js

@@ -5,6 +5,8 @@ define( [
 	"./callbacks"
 ], function( jQuery, dataPriv ) {
 
+"use strict";
+
 jQuery.extend( {
 	queue: function( elem, type, data ) {
 		var queue;

src/queue/delay.js

@@ -4,8 +4,10 @@ define( [
 	"../effects" // Delay is optional because of this dependency
 ], function( jQuery ) {
 
+"use strict";
+
 // Based off of the plugin by Clint Helfers, with permission.
-// http://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/
+// https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/
 jQuery.fn.delay = function( time, type ) {
 	time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time;
 	type = type || "fx";

src/selector-native.js

@@ -6,6 +6,8 @@ define( [
 	"./var/indexOf"
 ], function( jQuery, document, documentElement, hasOwn, indexOf ) {
 
+"use strict";
+
 /*
  * Optional (non-Sizzle) selector module for custom builds.
  *
@@ -37,7 +39,26 @@ var hasDuplicate, sortInput,
 		documentElement.webkitMatchesSelector ||
 		documentElement.mozMatchesSelector ||
 		documentElement.oMatchesSelector ||
-		documentElement.msMatchesSelector;
+		documentElement.msMatchesSelector,
+
+	// CSS string/identifier serialization
+	// https://drafts.csswg.org/cssom/#common-serializing-idioms
+	rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\x80-\uFFFF\w-]/g,
+	fcssescape = function( ch, asCodePoint ) {
+		if ( asCodePoint ) {
+
+			// U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER
+			if ( ch === "\0" ) {
+				return "\uFFFD";
+			}
+
+			// Control characters and (dependent upon position) numbers get escaped as code points
+			return ch.slice( 0, -1 ) + "\\" + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + " ";
+		}
+
+		// Other potentially-special ASCII characters get backslash-escaped
+		return "\\" + ch;
+	};
 
 function sortOrder( a, b ) {
 
@@ -110,7 +131,14 @@ function uniqueSort( results ) {
 	return results;
 }
 
+function escape( sel ) {
+	return ( sel + "" ).replace( rcssescape, fcssescape );
+}
+
 jQuery.extend( {
+	uniqueSort: uniqueSort,
+	unique: uniqueSort,
+	escapeSelector: escape,
 	find: function( selector, context, results, seed ) {
 		var elem, nodeType,
 			i = 0;
@@ -140,8 +168,6 @@ jQuery.extend( {
 
 		return results;
 	},
-	uniqueSort: uniqueSort,
-	unique: uniqueSort,
 	text: function( elem ) {
 		var node,
 			ret = "",

src/selector-sizzle.js

@@ -3,12 +3,17 @@ define( [
 	"../external/sizzle/dist/sizzle"
 ], function( jQuery, Sizzle ) {
 
+"use strict";
+
 jQuery.find = Sizzle;
 jQuery.expr = Sizzle.selectors;
+
+// Deprecated
 jQuery.expr[ ":" ] = jQuery.expr.pseudos;
 jQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort;
 jQuery.text = Sizzle.getText;
 jQuery.isXMLDoc = Sizzle.isXML;
 jQuery.contains = Sizzle.contains;
+jQuery.escapeSelector = Sizzle.escape;
 
 } );

src/serialize.js

@@ -6,7 +6,9 @@ define( [
 	"./attributes/prop"
 ], function( jQuery, rcheckableType ) {
 
-var r20 = /%20/g,
+"use strict";
+
+var
 	rbracket = /\[\]$/,
 	rCRLF = /\r?\n/g,
 	rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i,
@@ -55,17 +57,16 @@ function buildParams( prefix, obj, traditional, add ) {
 jQuery.param = function( a, traditional ) {
 	var prefix,
 		s = [],
-		add = function( key, value ) {
+		add = function( key, valueOrFunction ) {
 
-			// If value is a function, invoke it and return its value
-			value = jQuery.isFunction( value ) ? value() : ( value == null ? "" : value );
-			s[ s.length ] = encodeURIComponent( key ) + "=" + encodeURIComponent( value );
-		};
+			// If value is a function, invoke it and use its return value
+			var value = jQuery.isFunction( valueOrFunction ) ?
+				valueOrFunction() :
+				valueOrFunction;
 
-	// Set traditional to true for jQuery <= 1.3.2 behavior.
-	if ( traditional === undefined ) {
-		traditional = jQuery.ajaxSettings && jQuery.ajaxSettings.traditional;
-	}
+			s[ s.length ] = encodeURIComponent( key ) + "=" +
+				encodeURIComponent( value == null ? "" : value );
+		};
 
 	// If an array was passed in, assume that it is an array of form elements.
 	if ( jQuery.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) {
@@ -85,7 +86,7 @@ jQuery.param = function( a, traditional ) {
 	}
 
 	// Return the resulting serialization
-	return s.join( "&" ).replace( r20, "+" );
+	return s.join( "&" );
 };
 
 jQuery.fn.extend( {

src/traversing.js

@@ -9,6 +9,8 @@ define( [
 	"./selector"
 ], function( jQuery, indexOf, dir, siblings, rneedsContext ) {
 
+"use strict";
+
 var rparentsprev = /^(?:parents|prev(?:Until|All))/,
 
 	// Methods guaranteed to produce a unique set when starting from a unique set
@@ -39,16 +41,16 @@ jQuery.fn.extend( {
 			i = 0,
 			l = this.length,
 			matched = [],
-			pos = rneedsContext.test( selectors ) || typeof selectors !== "string" ?
-				jQuery( selectors, context || this.context ) :
-				0;
+			targets = typeof selectors !== "string" && jQuery( selectors );
 
+		// Positional selectors never match, since there's no _selection_ context
+		if ( !rneedsContext.test( selectors ) ) {
 			for ( ; i < l; i++ ) {
 				for ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) {
 
 					// Always skip document fragments
-				if ( cur.nodeType < 11 && ( pos ?
-					pos.index( cur ) > -1 :
+					if ( cur.nodeType < 11 && ( targets ?
+						targets.index( cur ) > -1 :
 
 						// Don't pass non-elements to Sizzle
 						cur.nodeType === 1 &&
@@ -59,6 +61,7 @@ jQuery.fn.extend( {
 					}
 				}
 			}
+		}
 
 		return this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched );
 	},

src/traversing/findFilter.js

@@ -5,6 +5,8 @@ define( [
 	"../selector"
 ], function( jQuery, indexOf, rneedsContext ) {
 
+"use strict";
+
 var risSimple = /^.[^:#\[\.,]*$/;
 
 // Implement the identical functionality for filter and not
@@ -33,7 +35,7 @@ function winnow( elements, qualifier, not ) {
 	}
 
 	return jQuery.grep( elements, function( elem ) {
-		return ( indexOf.call( qualifier, elem ) > -1 ) !== not;
+		return ( indexOf.call( qualifier, elem ) > -1 ) !== not && elem.nodeType === 1;
 	} );
 }
 
@@ -53,9 +55,8 @@ jQuery.filter = function( expr, elems, not ) {
 
 jQuery.fn.extend( {
 	find: function( selector ) {
-		var i,
+		var i, ret,
 			len = this.length,
-			ret = [],
 			self = this;
 
 		if ( typeof selector !== "string" ) {
@@ -68,14 +69,13 @@ jQuery.fn.extend( {
 			} ) );
 		}
 
+		ret = this.pushStack( [] );
+
 		for ( i = 0; i < len; i++ ) {
 			jQuery.find( selector, self[ i ], ret );
 		}
 
-		// Needed because $( selector, context ) becomes $( context ).find( selector )
-		ret = this.pushStack( len > 1 ? jQuery.unique( ret ) : ret );
-		ret.selector = this.selector ? this.selector + " " + selector : selector;
-		return ret;
+		return len > 1 ? jQuery.uniqueSort( ret ) : ret;
 	},
 	filter: function( selector ) {
 		return this.pushStack( winnow( this, selector || [], false ) );

src/traversing/var/dir.js

@@ -2,6 +2,8 @@ define( [
 	"../../core"
 ], function( jQuery ) {
 
+"use strict";
+
 return function( elem, dir, until ) {
 	var matched = [],
 		truncate = until !== undefined;

src/traversing/var/rneedsContext.js

@@ -2,5 +2,7 @@ define( [
 	"../../core",
 	"../../selector"
 ], function( jQuery ) {
+	"use strict";
+
 	return jQuery.expr.match.needsContext;
 } );

src/traversing/var/siblings.js

 define( function() {
 
+"use strict";
+
 return function( n, elem ) {
 	var matched = [];
 

src/var/ObjectFunctionString.js

+define( [
+	"./fnToString"
+], function( fnToString ) {
+	"use strict";
+
+	return fnToString.call( Object );
+} );

src/var/arr.js

 define( function() {
+	"use strict";
+
 	return [];
 } );