Tweaked a couple cases where == was used instead of ===.

[jquery.git] / src / support.js

diff --git a/src/support.js b/src/support.js
index 5fa45d2..ef5f010 100644 (file)
--- a/src/support.js
+++ b/src/support.js
@@ -20,7 +20,7 @@
 
        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
@@ -40,7 +40,8 @@
 
                // Make sure that element opacity exists
                // (IE uses filter instead)
-               opacity: a.style.opacity === "0.55",
+               // 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)
@@ -81,6 +82,7 @@
 
        // 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.
        jQuery(function(){
                var div = document.createElement("div");
                div.style.width = div.style.paddingLeft = "1px";
@@ -91,6 +93,25 @@
                div = null;
        });
 
+       // 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;
 })();