X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;ds=sidebyside;f=src%2Fsupport.js;h=ad8566d8bd047ab106d5f5d4b48bb3f9636c0f1f;hb=d42afd0f657d12d6daba6894d40226bea83fe1b6;hp=f4b706ba921e6a0813eecc37296a097b3ec600e6;hpb=d7d908b05a442745c1a90728805b74db0a7921cf;p=jquery.git
diff --git a/src/support.js b/src/support.js
index f4b706b..ad8566d 100644
--- 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 = '
a';
+ div.innerHTML = ' a';
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)
@@ -88,7 +88,30 @@
document.body.appendChild( div );
jQuery.boxModel = jQuery.support.boxModel = div.offsetWidth === 2;
document.body.removeChild( div ).style.display = 'none';
+ 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;
})();
jQuery.props = {
@@ -98,5 +121,8 @@ jQuery.props = {
maxlength: "maxLength",
cellspacing: "cellSpacing",
rowspan: "rowSpan",
- tabindex: "tabIndex"
+ colspan: "colSpan",
+ tabindex: "tabIndex",
+ usemap: "useMap",
+ frameborder: "frameBorder"
};