support.js needs to come before event.js (also placed in a temporary setTimeout to...

[jquery.git] / src / support.js

diff --git a/src/support.js b/src/support.js
index 3d80548..b7da5e5 100644 (file)
--- a/src/support.js
+++ b/src/support.js
@@ -5,10 +5,10 @@
        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>';
+       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];
@@ -21,27 +21,27 @@
        jQuery.support = {
                // IE strips leading whitespace when .innerHTML is used
                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 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",
-               
+               opacity: a.style.opacity === "0.55",
+
                // Verify style float existence
                // (IE uses styleFloat instead of cssFloat)
                cssFloat: !!a.style.cssFloat,
@@ -51,14 +51,14 @@
                noCloneEvent: true,
                boxModel: null
        };
-       
+
        script.type = "text/javascript";
        try {
                script.appendChild( document.createTextNode( "window." + id + "=1;" ) );
        } 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)
@@ -81,6 +81,8 @@
 
        // Figure out if the W3C box model works as expected
        // document.body must exist before we can do this
+       // TODO: This timeout is temporary until I move ready into core.js.
+       setTimeout(function(){
        jQuery(function(){
                var div = document.createElement("div");
                div.style.width = div.style.paddingLeft = "1px";
@@ -88,20 +90,43 @@
                document.body.appendChild( div );
                jQuery.boxModel = jQuery.support.boxModel = div.offsetWidth === 2;
                document.body.removeChild( div ).style.display = 'none';
+               div = null;
        });
-})();
+       }, 13);
+
+       // 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; 
 
-var styleFloat = jQuery.support.cssFloat ? "cssFloat" : "styleFloat";
+               return isSupported; 
+       };
+       
+       jQuery.support.submitBubbles = eventSupported("submit");
+       jQuery.support.changeBubbles = eventSupported("change");
+       jQuery.support.focusBubbles = eventSupported("focus");
+
+       // 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"
 };