Support: Reduce size

Ref a7ea12a

src/css/support.js

@@ -5,9 +5,6 @@ define([
 
 (function() {
 	var pixelPositionVal, boxSizingReliableVal,
-		// Support: Firefox<29, Android 2.3 (Prefixed box-sizing versions).
-		divReset = "padding:0;margin:0;border:0;display:block;-webkit-box-sizing:content-box;" +
-			"-moz-box-sizing:content-box;box-sizing:content-box",
 		docElem = document.documentElement,
 		container = document.createElement( "div" ),
 		div = document.createElement( "div" );
@@ -20,17 +17,20 @@ define([
 	div.cloneNode( true ).style.backgroundClip = "";
 	support.clearCloneStyle = div.style.backgroundClip === "content-box";
 
-	container.style.cssText = "border:0;width:0;height:0;position:absolute;top:0;left:-9999px;" +
-		"margin-top:1px";
+	container.style.cssText = "border:0;width:0;height:0;top:0;left:-9999px;margin-top:1px;" +
+		"position:absolute";
 	container.appendChild( div );
 
 	// Executing both pixelPosition & boxSizingReliable tests require only one layout
 	// so they're executed at the same time to save the second computation.
 	function computePixelPositionAndBoxSizingReliable() {
-		// Support: Firefox<29, Android 2.3 (Prefixed box-sizing versions).
-		div.style.cssText = "-webkit-box-sizing:border-box;-moz-box-sizing:border-box;" +
-			"box-sizing:border-box;padding:1px;border:1px;display:block;width:4px;margin-top:1%;" +
-			"position:absolute;top:1%";
+		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;display:block;margin-top:1%;top:1%;" +
+			"border:1px;padding:1px;width:4px;position:absolute";
+		div.innerHTML = "";
 		docElem.appendChild( container );
 
 		var divStyle = window.getComputedStyle( div, null );
@@ -40,9 +40,10 @@ define([
 		docElem.removeChild( container );
 	}
 
-	// Use window.getComputedStyle because jsdom on node.js will break without it.
+	// Support: node.js jsdom
+	// Don't assume that getComputedStyle is a property of the global object
 	if ( window.getComputedStyle ) {
-		jQuery.extend(support, {
+		jQuery.extend( support, {
 			pixelPosition: function() {
 				// This test is executed only once but we still do memoizing
 				// since we can use the boxSizingReliable pre-computing.
@@ -64,7 +65,13 @@ define([
 				// This support function is only executed once so no memoizing is needed.
 				var ret,
 					marginDiv = div.appendChild( document.createElement( "div" ) );
-				marginDiv.style.cssText = div.style.cssText = divReset;
+
+				// Reset CSS: box-sizing; display; margin; border; padding
+				marginDiv.style.cssText = div.style.cssText =
+					// Support: Firefox<29, Android 2.3
+					// Vendor-prefix box-sizing
+					"-webkit-box-sizing:content-box;-moz-box-sizing:content-box;" +
+					"box-sizing:content-box;display:block;margin:0;border:0;padding:0";
 				marginDiv.style.marginRight = marginDiv.style.width = "0";
 				div.style.width = "1px";
 				docElem.appendChild( container );
@@ -73,9 +80,6 @@ define([
 
 				docElem.removeChild( container );
 
-				// Clean up the div for other support tests.
-				div.innerHTML = "";
-
 				return ret;
 			}
 		});