X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Fsupport.js;h=097866c284363b00e489dee1bb83557d5980523c;hb=61e37d41490aed319a176c6ca7feb95e5505059c;hp=429825083396aed0acdbb8b3d3c6d84763a7a1a9;hpb=985856b823b1648bffc3fd63c1faf836d0ddaf7c;p=jquery.git

diff --git a/src/support.js b/src/support.js
index 4298250..097866c 100644
--- a/src/support.js
+++ b/src/support.js
@@ -1,14 +1,14 @@
-(function(){
+(function() {
 
 	jQuery.support = {};
 
 	var root = document.documentElement,
 		script = document.createElement("script"),
 		div = document.createElement("div"),
-		id = "script" + (new Date).getTime();
+		id = "script" + now();
 
 	div.style.display = "none";
-	div.innerHTML = '   <link/><table></table><a href="/a" style="color:red;float:left;opacity:.5;">a</a><select><option>text</option></select><object><param/></object>';
+	div.innerHTML = '   <link/><table></table><a href="/a" style="color:red;float:left;opacity:.55;">a</a><select><option>text</option></select>';
 
 	var all = div.getElementsByTagName("*"),
 		a = div.getElementsByTagName("a")[0];
@@ -20,33 +20,29 @@
 
 	jQuery.support = {
 		// IE strips leading whitespace when .innerHTML is used
-		leadingWhitespace: div.firstChild.nodeType == 3,
-		
+		leadingWhitespace: div.firstChild.nodeType === 3,
+
 		// Make sure that tbody elements aren't automatically inserted
 		// IE will insert them into empty tables
 		tbody: !div.getElementsByTagName("tbody").length,
-		
-		// Make sure that you can get all elements in an <object> element
-		// IE 7 always returns no results
-		objectAll: !!div.getElementsByTagName("object")[0]
-			.getElementsByTagName("*").length,
-		
+
 		// Make sure that link elements get serialized correctly by innerHTML
 		// This requires a wrapper element in IE
 		htmlSerialize: !!div.getElementsByTagName("link").length,
-		
+
 		// Get the style information from getAttribute
 		// (IE uses .cssText insted)
 		style: /red/.test( a.getAttribute("style") ),
-		
+
 		// Make sure that URLs aren't manipulated
 		// (IE normalizes it by default)
 		hrefNormalized: a.getAttribute("href") === "/a",
-		
+
 		// Make sure that element opacity exists
 		// (IE uses filter instead)
-		opacity: a.style.opacity === "0.5",
-		
+		// Use a regex to work around a WebKit issue. See #5145
+		opacity: /^0.55$/.test( a.style.opacity ),
+
 		// Verify style float existence
 		// (IE uses styleFloat instead of cssFloat)
 		cssFloat: !!a.style.cssFloat,
@@ -56,14 +52,14 @@
 		noCloneEvent: true,
 		boxModel: null
 	};
-	
+
 	script.type = "text/javascript";
 	try {
 		script.appendChild( document.createTextNode( "window." + id + "=1;" ) );
-	} catch(e){}
+	} catch(e) {}
 
 	root.insertBefore( script, root.firstChild );
-	
+
 	// Make sure that the execution of code works by injecting a script
 	// tag with appendChild/createTextNode
 	// (IE doesn't support this, fails, and uses .text instead)
@@ -75,7 +71,7 @@
 	root.removeChild( script );
 
 	if ( div.attachEvent && div.fireEvent ) {
-		div.attachEvent("onclick", function click(){
+		div.attachEvent("onclick", function click() {
 			// Cloning a node shouldn't copy over any
 			// bound event handlers (IE does this)
 			jQuery.support.noCloneEvent = false;
@@ -86,27 +82,49 @@
 
 	// Figure out if the W3C box model works as expected
 	// document.body must exist before we can do this
-	jQuery(function(){
+	// TODO: This timeout is temporary until I move ready into core.js.
+	jQuery(function() {
 		var div = document.createElement("div");
 		div.style.width = div.style.paddingLeft = "1px";
 
 		document.body.appendChild( div );
 		jQuery.boxModel = jQuery.support.boxModel = div.offsetWidth === 2;
 		document.body.removeChild( div ).style.display = 'none';
+		div = null;
 	});
-})();
 
-var styleFloat = jQuery.support.cssFloat ? "cssFloat" : "styleFloat";
+	// Technique from Juriy Zaytsev
+	// http://thinkweb2.com/projects/prototype/detecting-event-support-without-browser-sniffing/
+	var eventSupported = function( eventName ) { 
+		var el = document.createElement("div"); 
+		eventName = "on" + eventName; 
+
+		var isSupported = (eventName in el); 
+		if ( !isSupported ) { 
+			el.setAttribute(eventName, "return;"); 
+			isSupported = typeof el[eventName] === "function"; 
+		} 
+		el = null; 
+
+		return isSupported; 
+	};
+	
+	jQuery.support.submitBubbles = eventSupported("submit");
+	jQuery.support.changeBubbles = eventSupported("change");
+
+	// release memory in IE
+	root = script = div = all = a = null;
+})();
 
 jQuery.props = {
 	"for": "htmlFor",
 	"class": "className",
-	"float": styleFloat,
-	cssFloat: styleFloat,
-	styleFloat: styleFloat,
 	readonly: "readOnly",
 	maxlength: "maxLength",
 	cellspacing: "cellSpacing",
 	rowspan: "rowSpan",
-	tabindex: "tabIndex"
+	colspan: "colSpan",
+	tabindex: "tabIndex",
+	usemap: "useMap",
+	frameborder: "frameBorder"
 };