Core: Simplify code post browser support reduction

Summary of the changes:
* Core: Simplify code post browser support reduction
* Tests: Remove legacy jQuery.cache & oldIE leftovers
* Tests: Reformat JavaScript in delegatetest.html
* Docs: "jQuery Foundation Projects" -> "jQuery Projects"
* Tests: Drop an unused localfile.html file (modern browsers don't support
  the `file:` protocol this way, there's no point in keeping the file around)
* Effects: Remove a redundant `!fn` check (`fn || !fn && easing` is equivalent
  to `fn || easing`; simplify the code)
* CSS: Explain the fallback to direct object access in curCSS better
* Tests: Deduplicate `jQuery.parseHTML` test titles
* Dimensions: Add a test for fractional values
* Tests: Fix a buggy WebKit regex

Closes gh-5296

7 files changed, 94 insertions, 157 deletions

diff --git a/test/data/testinit.js b/test/data/testinit.js
index baf758205..aafe2902c 100644
--- a/test/data/testinit.js
+++ b/test/data/testinit.js
@@ -144,16 +144,12 @@ this.createXMLFragment = function() {
 	return frag;
 };
 
-window.fireNative = document.createEvent ?
-	function( node, type ) {
-		var event = document.createEvent( "HTMLEvents" );
-
-		event.initEvent( type, true, true );
-		node.dispatchEvent( event );
-	} :
-	function( node, type ) {
-		node.fireEvent( "on" + type, document.createEventObject() );
-	};
+window.fireNative = function( node, type ) {
+	var event = document.createEvent( "HTMLEvents" );
+
+	event.initEvent( type, true, true );
+	node.dispatchEvent( event );
+};
 
 /**
  * Add random number to url to stop caching
diff --git a/test/delegatetest.html b/test/delegatetest.html
index d3225196e..53efe54ce 100644
--- a/test/delegatetest.html
+++ b/test/delegatetest.html
@@ -125,103 +125,95 @@ th, td {
 
 <script type='text/javascript'>
 
-$("#fileversion").text($.fn.jquery);
+$( "#fileversion" ).text( $.fn.jquery );
 
 // Try an auto-submit, it should only fire once
-$(function(){
+$( function() {
 	var triggered = false;
-	$("#autosub input").trigger("keypress");
-	$("body").on("submit", "#autosub", function( e ){
+	$( "#autosub input" ).trigger( "keypress" );
+	$( "body" ).on( "submit", "#autosub", function( e ) {
 		e.preventDefault();
 		e.stopPropagation();
 		if ( triggered ) {
-			alert("autosubmit FAIL");
+			alert( "autosubmit FAIL" );
 		}
 		triggered = true;
-	});
-	$("#autosub").submit().remove();
-});
+	} );
+	$( "#autosub" ).submit().remove();
+} );
 
 // Events we want to track in row-order
-var events = "bind-change live-change onX-change bind-propertychange live-beforeactivate live-focusin bind-focus live-beforedeactivate live-focusout bind-blur live-click live-keydown".split(" "),
+var events = "bind-change live-change onX-change bind-propertychange live-beforeactivate live-focusin bind-focus live-beforedeactivate live-focusout bind-blur live-click live-keydown".split( " " ),
 	counter = 0;
-	blinker = function(event){
-		if ( !counter ) {
-			$("#changes tbody td").text("");
-		}
-		var $el = event.data,
-			prev = $el.text();
-		prev = prev? prev +" | " : "";
-		return $el
-			.text(prev + ++counter+" " + (this.value.replace(/^on$/,"") || this.id || this.checked || ""))
-			.css("backgroundColor","#0f0")
-			.delay(800)
-			.queue(function(next){
-				$el.css("backgroundColor","#afa");
-				--counter;
-				next();
-			});
-	};
+blinker = function( event ) {
+	if ( !counter ) {
+		$( "#changes tbody td" ).text( "" );
+	}
+	var $el = event.data,
+		prev = $el.text();
+	prev = prev ? prev + " | " : "";
+	return $el
+		.text( prev + ++counter + " " + ( this.value.replace( /^on$/, "" ) || this.id || this.checked || "" ) )
+		.css( "backgroundColor", "#0f0" )
+		.delay( 800 )
+		.queue( function( next ) {
+			$el.css( "backgroundColor", "#afa" );
+			--counter;
+			next();
+		} );
+};
 
-for ( var i=0; i < events.length; i++ ) {
-	var m = events[i].split("-"),
-		api = m[0],
-		type = m[1],
-		$row = $("<tr><th>"+type+" "+api+"</th></tr>");
+for ( var i = 0; i < events.length; i++ ) {
+	var m = events[ i ].split( "-" ),
+		api = m[ 0 ],
+		type = m[ 1 ],
+		$row = $( "<tr><th>" + type + " " + api + "</th></tr>" );
 
-	$("#changes thead td").each(function(){
-		var id = "#"+this.id,
-			$cell = $("<td></td>");
+	$( "#changes thead td" ).each( function() {
+		var id = "#" + this.id,
+			$cell = $( "<td></td>" );
 		if ( api == "onX" ) {
-			$(this).find("input, button, select, textarea").each(function(){
-				this["on"+type] = function(e){ e = $.event.fix(e||event); e.data = $cell; blinker.call(this, e); };
-			});
+			$( this ).find( "input, button, select, textarea" ).each( function() {
+				this[ "on" + type ] = function( e ) {
+ e = $.event.fix( e || event ); e.data = $cell; blinker.call( this, e );
+};
+			} );
 		} else if ( api == "bind" ) {
-			$(this).find("input, button, select, textarea").bind(type, $cell, blinker);
+			$( this ).find( "input, button, select, textarea" ).bind( type, $cell, blinker );
 		} else {
-			$(id+" input,"+id+" button,"+id+" select,"+id+" textarea").live(type, $cell, blinker);
+			$( id + " input," + id + " button," + id + " select," + id + " textarea" ).live( type, $cell, blinker );
 		}
-		$row.append($cell);
-	});
-	$("#changes tbody").append($row);
-}
-
-// Ensure that cloned elements get the delegated event magic; this is
-// implementation-specific knowledge but otherwise impossible to test.
-// The beforeactivate event attaches a direct-bound change event.
-// (Only care about the live change for this third select element.)
-var sel1 = $("#select-one select:first-child");
-if ( typeof(sel1[0].fireEvent) !== "undefined" ) {
-	sel1.trigger( "beforeactivate" ).clone().appendTo("#select-one");
-	//alert($("#select-one select").map(function(){ return this._change_attached || "undef"; }).get().join("|"));
+		$row.append( $cell );
+	} );
+	$( "#changes tbody" ).append( $row );
 }
 
-jQuery.fn.blink = function(){
+jQuery.fn.blink = function() {
 	return this
-		.css("backgroundColor","green")
-		.text( (parseInt(this.text(), 10) || 0) + 1 )
-		.delay(700).queue(function(next){
-			jQuery(this).css("backgroundColor","#afa");
+		.css( "backgroundColor", "green" )
+		.text( ( parseInt( this.text(), 10 ) || 0 ) + 1 )
+		.delay( 700 ).queue( function( next ) {
+			jQuery( this ).css( "backgroundColor", "#afa" );
 			next();
-		});
+		} );
 };
 
 jQuery.fn.addSubmitTest = function( id, prevent ) {
-	return this.live("submit", function(e){
+	return this.live( "submit", function( e ) {
 		if ( prevent ) {
-				e.preventDefault();
+			e.preventDefault();
 		}
-		jQuery(id).blink();
-	});
+		jQuery( id ).blink();
+	} );
 };
 
-$("#text_submit").addSubmitTest("#textSubmit", true);
-$("#password_submit").addSubmitTest("#passwordSubmit", true);
-$("#submit_submit").addSubmitTest("#submitSubmit", true);
-$("#prog_submit").addSubmitTest("#submitSubmit", true);
-$(document).bind("submit", function(){
-	jQuery("#boundSubmit").blink();
-});
+$( "#text_submit" ).addSubmitTest( "#textSubmit", true );
+$( "#password_submit" ).addSubmitTest( "#passwordSubmit", true );
+$( "#submit_submit" ).addSubmitTest( "#submitSubmit", true );
+$( "#prog_submit" ).addSubmitTest( "#submitSubmit", true );
+$( document ).bind( "submit", function() {
+	jQuery( "#boundSubmit" ).blink();
+} );
 
 </script>
 </body>
diff --git a/test/localfile.html b/test/localfile.html
deleted file mode 100644
index 5a79bfec1..000000000
--- a/test/localfile.html
+++ /dev/null
@@ -1,75 +0,0 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en" dir="ltr" id="html">
-<head>
-	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
-	<title>jQuery Local File Test</title>
-	<!-- Includes -->
-	<script src="jquery.js"></script>
-	<style>
-		.error { color: red; }
-		.success { color: green; }
-	</style>
-</head>
-<body>
-	<h1>jQuery Local File Test</h1>
-	<h2>
-		Introduction
-	</h2>
-	<ul>
-		<li>
-			Access this file using the "file:" protocol,
-		</li>
-		<li>
-			two green "OK" strings must appear below,
-		</li>
-		<li>
-			Empty local files will issue errors, it's a known limitation.
-		</li>
-	</ul>
-	<h2>
-		Results
-	</h2>
-	<ul>
-		<li>
-			Success:
-			<span id="success">
-			</span>
-		</li>
-		<li>
-			Error:
-			<span id="error">
-			</span>
-		</li>
-	</ul>
-	<h2>
-		Logs:
-	</h2>
-	<ul id="log">
-	</ul>
-	<script>
-		var logUL = jQuery( "#log" );
-		function doLog( message, args ) {
-			jQuery( "<li></li>" ).appendTo( logUL ).text( message + ': "' + Array.prototype.join.call( args, '" - "' ) + '"' );
-		}
-		jQuery.ajax( "./data/badjson.js" , {
-			context: jQuery( "#success" ),
-			dataType: "text"
-		}).success(function( data, _, xhr ) {
-			doLog( "Success (" + xhr.status + ")" , arguments );
-			this.addClass( data ? "success" : "error" ).text( "OK" );
-		}).error(function( xhr ) {
-			doLog( "Success (" + xhr.status + ")" , arguments );
-			this.addClass( "error" ).text( "FAIL" );
-		});
-		jQuery.ajax( "./data/doesnotexist.ext" , {
-			context: jQuery( "#error" ),
-			dataType: "text"
-		}).error(function( xhr ) {
-			doLog( "Error (" + xhr.status + ")" , arguments );
-			this.addClass( "success" ).text( "OK" );
-		}).success(function( data, _, xhr ) {
-			doLog( "Error (" + xhr.status + ")" , arguments );
-			this.addClass( "error" ).text( "FAIL" );
-		});
-	</script>
-</body>
diff --git a/test/unit/core.js b/test/unit/core.js
index 294664d5c..666f0e820 100644
--- a/test/unit/core.js
+++ b/test/unit/core.js
@@ -1403,7 +1403,7 @@ QUnit.test( "jQuery.parseHTML(<a href>) - gh-2965", function( assert ) {
 	assert.ok( /\/example\.html$/.test( href ), "href is not lost after parsing anchor" );
 } );
 
-QUnit.test( "jQuery.parseHTML", function( assert ) {
+QUnit.test( "jQuery.parseHTML error handling", function( assert ) {
 	var done = assert.async();
 	assert.expect( 1 );
 
diff --git a/test/unit/css.js b/test/unit/css.js
index 31d043544..146dcd9da 100644
--- a/test/unit/css.js
+++ b/test/unit/css.js
@@ -1757,7 +1757,7 @@ QUnit.testUnlessIE( "css(--customProperty)", function( assert ) {
 	var div = jQuery( "<div>" ).appendTo( "#qunit-fixture" ),
 		$elem = jQuery( "<div>" ).addClass( "test__customProperties" )
 			.appendTo( "#qunit-fixture" ),
-		webkitOrBlink = /\webkit\b/i.test( navigator.userAgent ),
+		webkitOrBlink = /webkit\b/i.test( navigator.userAgent ),
 		expected = 20;
 
 	if ( webkitOrBlink ) {
diff --git a/test/unit/dimensions.js b/test/unit/dimensions.js
index 85a69cdb7..6b0c9c798 100644
--- a/test/unit/dimensions.js
+++ b/test/unit/dimensions.js
@@ -284,6 +284,30 @@ QUnit.test( "outerHeight()", function( assert ) {
 	div.remove();
 } );
 
+QUnit.test( "fractional getters", function( assert ) {
+	assert.expect( 8 );
+
+	var elem = jQuery( "<div>" ).css( {
+		width: "10.5px",
+		height: "20.5px",
+		border: "10px solid white",
+		padding: "2px",
+		margin: "3px"
+	} );
+
+	elem.appendTo( "#qunit-fixture" );
+
+	assert.strictEqual( elem.width(), 10.5, "width supports fractions" );
+	assert.strictEqual( elem.innerWidth(), 14.5, "innerWidth supports fractions" );
+	assert.strictEqual( elem.outerWidth(), 34.5, "outerWidth supports fractions" );
+	assert.strictEqual( elem.outerWidth( true ), 40.5, "outerWidth( true ) supports fractions" );
+
+	assert.strictEqual( elem.height(), 20.5, "height supports fractions" );
+	assert.strictEqual( elem.innerHeight(), 24.5, "innerHeight supports fractions" );
+	assert.strictEqual( elem.outerHeight(), 44.5, "outerHeight supports fractions" );
+	assert.strictEqual( elem.outerHeight( true ), 50.5, "outerHeight( true ) supports fractions" );
+} );
+
 QUnit.test( "child of a hidden elem (or unconnected node) has accurate inner/outer/Width()/Height()  see trac-9441 trac-9300", function( assert ) {
 	assert.expect( 16 );
 
diff --git a/test/unit/wrap.js b/test/unit/wrap.js
index 24136ac0e..31f9cd300 100644
--- a/test/unit/wrap.js
+++ b/test/unit/wrap.js
@@ -23,7 +23,7 @@ function testWrap( val, assert ) {
 
 	assert.expect( 18 );
 
-	var defaultText, result, j, i, cacheLength;
+	var defaultText, result, j;
 
 	defaultText = "Try them out:";
 	result = jQuery( "#first" ).wrap( val( "<div class='red'><span></span></div>" ) ).text();