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Oops, forgot to commit support.js.

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jeresig committed Dec 21, 2008
1 parent b850ab2 commit c9dd5d997229919b8dd4cc402b7b7a465982071a
Showing with 99 additions and 0 deletions.
  1. +99 −0 src/support.js
@@ -0,0 +1,99 @@
(function(){

jQuery.support = {};

var root = document.documentElement,
script = document.createElement("script"),
div = document.createElement("div"),
id = "script" + (new Date).getTime();

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>';

var all = div.getElementsByTagName("*"),
a = div.getElementsByTagName("a")[0];

// Can't get basic test support
if ( !all || !all.length || !a ) {
return;
}

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 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",

// Verify style float existence
// (IE uses styleFloat instead of cssFloat)
cssFloat: !!a.style.cssFloat,

// Will be defined later
scriptEval: false,
noCloneEvent: true
};

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)
if ( window[ id ] ) {
jQuery.support.scriptEval = true;
delete window[ id ];
}

root.removeChild( script );

if ( div.attachEvent && div.fireEvent ) {
div.attachEvent("onclick", function(){
// Cloning a node shouldn't copy over any
// bound event handlers (IE does this)
jQuery.support.noCloneEvent = false;
});
div.cloneNode(true).fireEvent("onclick");
}

})();

var styleFloat = jQuery.support.cssFloat ? "cssFloat" : "styleFloat";

jQuery.props = {
"for": "htmlFor",
"class": "className",
"float": styleFloat,
cssFloat: styleFloat,
styleFloat: styleFloat,
readonly: "readOnly",
maxlength: "maxLength",
cellspacing: "cellSpacing",
rowspan: "rowSpan"
};

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