Fix #10067. Create jQuery.quickReady; closes gh-736.

Allows us to get to the ready state sooner by not waiting for iframes to load. If that causes backcompat pain, use `jQuery.quickReady = false` as prescribed by your developer.

src/core.js

@@ -375,6 +375,9 @@ jQuery.extend({
 	// the ready event fires. See #6781
 	readyWait: 1,
 
+	// should we fire ready on readyState "interactive" ?
+	quickReady: true,
+
 	// Hold (or release) the ready event
 	holdReady: function( hold ) {
 		if ( hold ) {
@@ -386,6 +389,12 @@ jQuery.extend({
 
 	// Handle when the DOM is ready
 	ready: function( wait ) {
+		// user wasn't necessarily given the chance to set jQuery.quickReady before bindReady
+		// so we check here for quickReady instead
+		if ( !jQuery.quickReady && document.readyState === "interactive" ) {
+			return;
+		}
+
 		// Either a released hold or an DOMready/load event and not yet ready
 		if ( (wait === true && !--jQuery.readyWait) || (wait !== true && !jQuery.isReady) ) {
 			// Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
@@ -420,9 +429,9 @@ jQuery.extend({
 
 		// Catch cases where $(document).ready() is called after the
 		// browser event has already occurred.
-		if ( document.readyState === "complete" ) {
+		if ( document.readyState !== "loading" ) {
 			// Handle it asynchronously to allow scripts the opportunity to delay ready
-			return setTimeout( jQuery.ready, 1 );
+			setTimeout( jQuery.ready, 1 );
 		}
 
 		// Mozilla, Opera and webkit nightlies currently support this event
@@ -915,6 +924,7 @@ rootjQuery = jQuery(document);
 // Cleanup functions for the document ready method
 if ( document.addEventListener ) {
 	DOMContentLoaded = function() {
+		jQuery.quickReady = true;
 		document.removeEventListener( "DOMContentLoaded", DOMContentLoaded, false );
 		jQuery.ready();
 	};
@@ -922,7 +932,7 @@ if ( document.addEventListener ) {
 } else if ( document.attachEvent ) {
 	DOMContentLoaded = function() {
 		// Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
-		if ( document.readyState === "complete" ) {
+		if ( document.readyState === "complete" || ( jQuery.quickReady && document.readyState === "interactive" ) ) {
 			document.detachEvent( "onreadystatechange", DOMContentLoaded );
 			jQuery.ready();
 		}

test/data/event/asyncQuickReadyFalse.html

+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+<html>
+<head>
+<meta http-equiv="content-type" content="text/html; charset=utf-8">
+<title>Test case for jQuery ticket #10067</title>
+<script type="text/javascript">
+
+// ready should fire callback after the iframe fires the callback
+setTimeout(function () {
+	el = document.createElement('script');
+	el.type = 'text/javascript';
+	el.onload = function () {
+		jQuery.quickReady = false;
+		jQuery(document).ready(function () {
+			// unfortunately, Opera 11.6 and lower has a bug where
+			// document.readyState is "complete" before all subresources
+			// are loaded, so we need this check here for tests to pass
+			if ( document.readyState !== "complete" ) {
+				window.parent.iframeCallback(false);
+			}
+		});
+    }
+	document.getElementsByTagName('head')[0].appendChild(el);
+	el.src = "../include_js.php";
+}, 1000);
+</script>
+</head>
+<body>
+<!-- long loading iframe -->
+<iframe src="longLoad.php?sleep=3&return=true" style="width: 1px; height: 1px"></iframe>
+</body>
+</html>
\ No newline at end of file

test/data/event/asyncQuickReadyTrue.html

+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+<html>
+<head>
+<meta http-equiv="content-type" content="text/html; charset=utf-8">
+<title>Test case for jQuery ticket #10067</title>
+<script type="text/javascript">
+// browsers that implement the non-standard event API will load the iframe
+// before loading up jQuery, so quickReady has no effect here
+if( document.attachEvent ){
+	window.parent.iframeCallback(true);
+} else {
+	setTimeout(function () {
+		el = document.createElement('script');
+		el.type = 'text/javascript';
+		el.onload = function () {
+			jQuery(document).ready(function () {
+				window.parent.iframeCallback(true);
+			});
+	    }
+		document.getElementsByTagName('head')[0].appendChild(el);
+		el.src = "../include_js.php";
+	}, 1000);
+}
+</script>
+</head>
+<body>
+<!-- long loading iframe -->
+<iframe src="longLoad.php?sleep=30&return=false" style="width: 1px; height: 1px"></iframe>
+</body>
+</html>
\ No newline at end of file

test/data/event/longLoad.php

+<?php
+sleep((int)$_GET['sleep']);
+?>
+<script type="text/javascript">
+window.parent.parent.iframeCallback(<?php echo $_GET['return'];?>);
+</script>
\ No newline at end of file

test/data/event/syncReady.html

+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+<html>
+<head>
+<meta http-equiv="content-type" content="text/html; charset=utf-8">
+<title>Test case for jQuery ticket #10067</title>
+<script type="text/javascript" src="../include_js.php"></script>
+</head>
+<body>
+<script type="text/javascript">
+jQuery(document).ready(function () {
+	window.parent.iframeCallback(true);
+});
+</script>
+<!-- long loading iframe -->
+<iframe src="longLoad.php?sleep=10&return=false" style="width: 1px; height: 1px"></iframe>
+</body>
+</html>
\ No newline at end of file

test/data/support/bodyBackground.html

@@ -21,7 +21,7 @@
 	</div>
 	<script>
 		jQuery(function() {
-			window.parent.supportCallback( jQuery( "body" ).css( "backgroundColor" ), jQuery.support );
+			window.parent.iframeCallback( jQuery( "body" ).css( "backgroundColor" ), jQuery.support );
 		});
 	</script>
 </body>

test/data/support/boxModelIE.html

@@ -3,7 +3,7 @@
 <body>
 	<script src="../include_js.php"></script>
 	<script>
-	jQuery(function() { window.parent.supportCallback( document.compatMode, jQuery.support.boxModel ) });
+	jQuery(function() { window.parent.iframeCallback( document.compatMode, jQuery.support.boxModel ) });
 	</script>
 </body>
 </html>

test/data/support/hiddenIFrameFF.html

-<html>
-	<head>
-		<script src="../include_js.php"></script>
-	</head>
-	<body>
-	</body>
-</html>

test/data/support/testElementCrash.html

@@ -7,14 +7,11 @@
 			background: url('http://s1.postimage.org/2d2r8xih0/body_background.png');
 		}
 	</style>
-	<script src="../../../src/core.js"></script>
-	<script src="../../../src/callbacks.js"></script>
-	<script src="../../../src/deferred.js"></script>
-	<script src="../../../src/support.js"></script>
+	<script src="../include_js.php"></script>
 </head>
 <body>
 	<script>
-		window.parent.supportCallback();
+		window.parent.iframeCallback();
 	</script>
 </body>
 </html>

test/data/testinit.js

@@ -192,7 +192,7 @@ function url(value) {
 		});
 
 		function loadFixture() {
-			var src = "./data/" + fileName + ".html?" + parseInt( Math.random()*1000, 10 ),
+			var src = url("./data/" + fileName + ".html"),
 				iframe = jQuery("<iframe />").css({
 					width: 500, height: 500, position: "absolute", top: -600, left: -600, visibility: "hidden"
 				}).appendTo("body")[0];
@@ -200,6 +200,29 @@ function url(value) {
 			return iframe;
 		}
 	};
+
+	this.testIframeWithCallback = function( title, fileName, func ) {
+
+		test( title, function() {
+			var iframe;
+
+			stop();
+			window.iframeCallback = function() {
+				var self = this,
+					args = arguments;
+				setTimeout(function() {
+					window.iframeCallback = undefined;
+					iframe.remove();
+					func.apply( self, args );
+					func = function() {};
+					start();
+				}, 0 );
+			};
+			iframe = jQuery( "<div/>" ).append(
+				jQuery( "<iframe/>" ).attr( "src", url("./data/" + fileName + ".html") )
+			).appendTo( "body" );
+		});
+	}
 }());
 
 // Sandbox start for great justice

test/unit/event.js

@@ -2794,6 +2794,26 @@ test("fixHooks extensions", function() {
 	jQuery.event.fixHooks.click = saved;
 });
 
+testIframeWithCallback( "jQuery.ready sync load", "event/syncReady", function( isOk ) {
+	expect(1);
+	ok( isOk, "jQuery loaded synchronously fires ready before all sub-resources are loaded" );
+});
+
+// async loaded tests expect jQuery to be loaded as a single file
+// if we're not doing PHP concat, then we fall back to document.write
+// which breaks order of execution on async loaded files
+if ( hasPHP ) {
+	testIframeWithCallback( "jQuery.ready async load with quickReady true", "event/asyncQuickReadyTrue", function( isOk ) {
+		expect(1);
+		ok( isOk, "jQuery loaded asynchronously with quickReady true fires ready before all sub-resources are loaded" );
+	});
+
+	testIframeWithCallback( "jQuery.ready async load with quickReady false", "event/asyncQuickReadyFalse", function( isOk ) {
+		expect(1);
+		ok( isOk, "jQuery loaded asynchronously with quickReady false fires ready after all sub-resources are loaded" );
+	});
+}
+
 (function(){
 	// This code must be run before DOM ready!
 	var notYetReady, noEarlyExecution,

test/unit/support.js

 module("support", { teardown: moduleTeardown });
 
-function supportIFrameTest( title, url, noDisplay, func ) {
-
-	if ( noDisplay !== true ) {
-		func = noDisplay;
-		noDisplay = false;
-	}
-
-	test( title, function() {
-		var iframe;
-
-		stop();
-		window.supportCallback = function() {
-			var self = this,
-				args = arguments;
-			setTimeout( function() {
-				window.supportCallback = undefined;
-				iframe.remove();
-				func.apply( self, args );
-				start();
-			}, 0 );
-		};
-		iframe = jQuery( "<div/>" ).css( "display", noDisplay ? "none" : "block" ).append(
-				jQuery( "<iframe/>" ).attr( "src", "data/support/" + url + ".html" )
-			).appendTo( "body" );
-	});
-}
-
-supportIFrameTest( "proper boxModel in compatMode CSS1Compat (IE6 and IE7)", "boxModelIE", function( compatMode, boxModel ) {
+testIframeWithCallback( "proper boxModel in compatMode CSS1Compat (IE6 and IE7)", "support/boxModelIE", function( compatMode, boxModel ) {
 	ok( compatMode !== "CSS1Compat" || boxModel, "boxModel properly detected" );
 });
 
-supportIFrameTest( "body background is not lost if set prior to loading jQuery (#9238)", "bodyBackground", function( color, support ) {
+testIframeWithCallback( "body background is not lost if set prior to loading jQuery (#9238)", "support/bodyBackground", function( color, support ) {
 	expect( 2 );
 	var i,
 		passed = true,
@@ -56,7 +29,7 @@ supportIFrameTest( "body background is not lost if set prior to loading jQuery (
 	ok( passed, "Same support properties" );
 });
 
-supportIFrameTest( "A background on the testElement does not cause IE8 to crash (#9823)", "testElementCrash", function() {
+testIframeWithCallback( "A background on the testElement does not cause IE8 to crash (#9823)", "support/testElementCrash", function() {
 	expect(1);
 	ok( true, "IE8 does not crash" );
 });