5 var root = document.documentElement,
6 script = document.createElement("script"),
7 div = document.createElement("div"),
8 id = "script" + (new Date).getTime();
10 div.style.display = "none";
11 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>';
13 var all = div.getElementsByTagName("*"),
14 a = div.getElementsByTagName("a")[0];
16 // Can't get basic test support
17 if ( !all || !all.length || !a ) {
22 // IE strips leading whitespace when .innerHTML is used
23 leadingWhitespace: div.firstChild.nodeType == 3,
25 // Make sure that tbody elements aren't automatically inserted
26 // IE will insert them into empty tables
27 tbody: !div.getElementsByTagName("tbody").length,
29 // Make sure that you can get all elements in an <object> element
30 // IE 7 always returns no results
31 objectAll: !!div.getElementsByTagName("object")[0]
32 .getElementsByTagName("*").length,
34 // Make sure that link elements get serialized correctly by innerHTML
35 // This requires a wrapper element in IE
36 htmlSerialize: !!div.getElementsByTagName("link").length,
38 // Get the style information from getAttribute
39 // (IE uses .cssText insted)
40 style: /red/.test( a.getAttribute("style") ),
42 // Make sure that URLs aren't manipulated
43 // (IE normalizes it by default)
44 hrefNormalized: a.getAttribute("href") === "/a",
46 // Make sure that element opacity exists
47 // (IE uses filter instead)
48 opacity: a.style.opacity === "0.5",
50 // Verify style float existence
51 // (IE uses styleFloat instead of cssFloat)
52 cssFloat: !!a.style.cssFloat,
54 // Verify tabindex attribute existence
55 // (IE uses tabIndex instead of tabindex)
56 tabindex: !a.getAttributeNode('tabindex'),
58 // Will be defined later
63 script.type = "text/javascript";
65 script.appendChild( document.createTextNode( "window." + id + "=1;" ) );
68 root.insertBefore( script, root.firstChild );
70 // Make sure that the execution of code works by injecting a script
71 // tag with appendChild/createTextNode
72 // (IE doesn't support this, fails, and uses .text instead)
74 jQuery.support.scriptEval = true;
78 root.removeChild( script );
80 if ( div.attachEvent && div.fireEvent ) {
81 div.attachEvent("onclick", function(){
82 // Cloning a node shouldn't copy over any
83 // bound event handlers (IE does this)
84 jQuery.support.noCloneEvent = false;
85 div.detachEvent("onclick", arguments.callee);
87 div.cloneNode(true).fireEvent("onclick");
92 var styleFloat = jQuery.support.cssFloat ? "cssFloat" : "styleFloat";
99 styleFloat: styleFloat,
100 readonly: "readOnly",
101 maxlength: "maxLength",
102 cellspacing: "cellSpacing",
104 tabindex: jQuery.support.tabindex ? "tabindex" : "tabIndex"