Core: Simplify code post browser support reduction

README.md

@@ -12,7 +12,7 @@ In the spirit of open source software development, jQuery always encourages comm
 
 1. [Getting Involved](https://contribute.jquery.org/)
 2. [Core Style Guide](https://contribute.jquery.org/style-guide/js/)
-3. [Writing Code for jQuery Foundation Projects](https://contribute.jquery.org/code/)
+3. [Writing Code for jQuery Projects](https://contribute.jquery.org/code/)
 
 ### References to issues/PRs
 

src/css/curCSS.js

@@ -13,6 +13,10 @@ function curCSS( elem, name, computed ) {
 	// getPropertyValue is needed for `.css('--customProperty')` (gh-3144)
 	if ( computed ) {
 
+		// A fallback to direct property access is needed as `computed`, being
+		// the output of `getComputedStyle`, contains camelCased keys and
+		// `getPropertyValue` requires kebab-case ones.
+		//
 		// Support: IE <=9 - 11+
 		// IE only supports `"float"` in `getPropertyValue`; in computed styles
 		// it's only available as `"cssFloat"`. We no longer modify properties

src/effects.js

@@ -446,7 +446,7 @@ jQuery.Animation = jQuery.extend( Animation, {
 
 jQuery.speed = function( speed, easing, fn ) {
 	var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : {
-		complete: fn || !fn && easing ||
+		complete: fn || easing ||
 			typeof speed === "function" && speed,
 		duration: speed,
 		easing: fn && easing || easing && typeof easing !== "function" && easing

src/manipulation.js

@@ -334,7 +334,7 @@ jQuery.each( {
 		for ( ; i <= last; i++ ) {
 			elems = i === last ? this : this.clone( true );
 			jQuery( insert[ i ] )[ original ]( elems );
-			push.apply( ret, elems.get() );
+			push.apply( ret, elems );
 		}
 
 		return this.pushStack( ret );

src/manipulation/domManip.js

@@ -65,6 +65,11 @@ function domManip( collection, args, callback, ignored ) {
 
 					// Keep references to cloned scripts for later restoration
 					if ( hasScripts ) {
+
+						// TODO: check if this can be replaced with
+						// `push.apply( scripts, getAll( node, "script" ) )`
+						// but remember about gh-4320. When looking into it,
+						// perhaps simplify jQuery.merge itself.
 						jQuery.merge( scripts, getAll( node, "script" ) );
 					}
 				}

test/data/testinit.js

@@ -146,16 +146,12 @@ 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

test/delegatetest.html

@@ -125,103 +125,95 @@ <h2>Submit Tests</h2>
 
 <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>

test/unit/core.js

@@ -1387,7 +1387,7 @@ 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 );
 

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 ) {

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 );
 

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();