5 ], function( jQuery, strundefined ) {
7 jQuery.support = (function( support ) {
9 var all, a, input, select, fragment, opt, eventName, isSupported, i,
10 div = document.createElement("div");
13 div.setAttribute( "className", "t" );
14 div.innerHTML = " <link/><table></table><a href='/a'>a</a><input type='checkbox'/>";
16 // Finish early in limited (non-browser) environments
17 all = div.getElementsByTagName("*") || [];
18 a = div.getElementsByTagName("a")[ 0 ];
19 if ( !a || !a.style || !all.length ) {
23 // First batch of tests
24 select = document.createElement("select");
25 opt = select.appendChild( document.createElement("option") );
26 input = div.getElementsByTagName("input")[ 0 ];
28 a.style.cssText = "top:1px;float:left;opacity:.5";
30 // Test setAttribute on camelCase class. If it works, we need attrFixes when doing get/setAttribute (ie6/7)
31 support.getSetAttribute = div.className !== "t";
33 // IE strips leading whitespace when .innerHTML is used
34 support.leadingWhitespace = div.firstChild.nodeType === 3;
36 // Make sure that tbody elements aren't automatically inserted
37 // IE will insert them into empty tables
38 support.tbody = !div.getElementsByTagName("tbody").length;
40 // Make sure that link elements get serialized correctly by innerHTML
41 // This requires a wrapper element in IE
42 support.htmlSerialize = !!div.getElementsByTagName("link").length;
44 // Get the style information from getAttribute
45 // (IE uses .cssText instead)
46 support.style = /top/.test( a.getAttribute("style") );
48 // Make sure that URLs aren't manipulated
49 // (IE normalizes it by default)
50 support.hrefNormalized = a.getAttribute("href") === "/a";
52 // Make sure that element opacity exists
53 // (IE uses filter instead)
54 // Use a regex to work around a WebKit issue. See #5145
55 support.opacity = /^0.5/.test( a.style.opacity );
57 // Verify style float existence
58 // (IE uses styleFloat instead of cssFloat)
59 support.cssFloat = !!a.style.cssFloat;
61 // Check the default checkbox/radio value ("" on WebKit; "on" elsewhere)
62 support.checkOn = !!input.value;
64 // Make sure that a selected-by-default option has a working selected property.
65 // (WebKit defaults to false instead of true, IE too, if it's in an optgroup)
66 support.optSelected = opt.selected;
68 // Tests for enctype support on a form (#6743)
69 support.enctype = !!document.createElement("form").enctype;
71 // Makes sure cloning an html5 element does not cause problems
72 // Where outerHTML is undefined, this still works
73 support.html5Clone = document.createElement("nav").cloneNode( true ).outerHTML !== "<:nav></:nav>";
75 // Will be defined later
76 support.inlineBlockNeedsLayout = false;
77 support.shrinkWrapBlocks = false;
78 support.pixelPosition = false;
79 support.deleteExpando = true;
80 support.noCloneEvent = true;
81 support.reliableMarginRight = true;
82 support.boxSizingReliable = true;
84 // Make sure checked status is properly cloned
86 support.noCloneChecked = input.cloneNode( true ).checked;
88 // Make sure that the options inside disabled selects aren't marked as disabled
89 // (WebKit marks them as disabled)
90 select.disabled = true;
91 support.optDisabled = !opt.disabled;
97 support.deleteExpando = false;
100 // Check if we can trust getAttribute("value")
101 input = document.createElement("input");
102 input.setAttribute( "value", "" );
103 support.input = input.getAttribute( "value" ) === "";
105 // Check if an input maintains its value after becoming a radio
107 input.setAttribute( "type", "radio" );
108 support.radioValue = input.value === "t";
110 // #11217 - WebKit loses check when the name is after the checked attribute
111 input.setAttribute( "checked", "t" );
112 input.setAttribute( "name", "t" );
114 fragment = document.createDocumentFragment();
115 fragment.appendChild( input );
117 // Check if a disconnected checkbox will retain its checked
118 // value of true after appended to the DOM (IE6/7)
119 support.appendChecked = input.checked;
121 // WebKit doesn't clone checked state correctly in fragments
122 support.checkClone = fragment.cloneNode( true ).cloneNode( true ).lastChild.checked;
125 // Opera does not clone events (and typeof div.attachEvent === undefined).
126 // IE9-10 clones events bound via attachEvent, but they don't trigger with .click()
127 if ( div.attachEvent ) {
128 div.attachEvent( "onclick", function() {
129 support.noCloneEvent = false;
132 div.cloneNode( true ).click();
135 // Support: IE<9 (lack submit/change bubble), Firefox 17+ (lack focusin event)
136 // Beware of CSP restrictions (https://developer.mozilla.org/en/Security/CSP)
137 for ( i in { submit: true, change: true, focusin: true }) {
138 div.setAttribute( eventName = "on" + i, "t" );
140 support[ i + "Bubbles" ] = eventName in window || div.attributes[ eventName ].expando === false;
143 div.style.backgroundClip = "content-box";
144 div.cloneNode( true ).style.backgroundClip = "";
145 support.clearCloneStyle = div.style.backgroundClip === "content-box";
148 // Iteration over object's inherited properties before its own.
149 for ( i in jQuery( support ) ) {
152 support.ownLast = i !== "0";
154 // Run tests that need a body at doc ready
156 var container, marginDiv, tds,
157 divReset = "padding:0;margin:0;border:0;display:block;box-sizing:content-box;-moz-box-sizing:content-box;-webkit-box-sizing:content-box;",
158 body = document.getElementsByTagName("body")[0];
161 // Return for frameset docs that don't have a body
165 container = document.createElement("div");
166 container.style.cssText = "border:0;width:0;height:0;position:absolute;top:0;left:-9999px;margin-top:1px";
168 body.appendChild( container ).appendChild( div );
171 // Check if table cells still have offsetWidth/Height when they are set
172 // to display:none and there are still other visible table cells in a
173 // table row; if so, offsetWidth/Height are not reliable for use when
174 // determining if an element has been hidden directly using
175 // display:none (it is still safe to use offsets if a parent element is
176 // hidden; don safety goggles and see bug #4512 for more information).
177 div.innerHTML = "<table><tr><td></td><td>t</td></tr></table>";
178 tds = div.getElementsByTagName("td");
179 tds[ 0 ].style.cssText = "padding:0;margin:0;border:0;display:none";
180 isSupported = ( tds[ 0 ].offsetHeight === 0 );
182 tds[ 0 ].style.display = "";
183 tds[ 1 ].style.display = "none";
186 // Check if empty table cells still have offsetWidth/Height
187 support.reliableHiddenOffsets = isSupported && ( tds[ 0 ].offsetHeight === 0 );
189 // Check box-sizing and margin behavior.
191 div.style.cssText = "box-sizing:border-box;-moz-box-sizing:border-box;-webkit-box-sizing:border-box;padding:1px;border:1px;display:block;width:4px;margin-top:1%;position:absolute;top:1%;";
193 // Workaround failing boxSizing test due to offsetWidth returning wrong value
194 // with some non-1 values of body zoom, ticket #13543
195 jQuery.swap( body, body.style.zoom != null ? { zoom: 1 } : {}, function() {
196 support.boxSizing = div.offsetWidth === 4;
199 // Use window.getComputedStyle because jsdom on node.js will break without it.
200 if ( window.getComputedStyle ) {
201 support.pixelPosition = ( window.getComputedStyle( div, null ) || {} ).top !== "1%";
202 support.boxSizingReliable = ( window.getComputedStyle( div, null ) || { width: "4px" } ).width === "4px";
204 // Check if div with explicit width and no margin-right incorrectly
205 // gets computed margin-right based on width of container. (#3333)
206 // Fails in WebKit before Feb 2011 nightlies
207 // WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
208 marginDiv = div.appendChild( document.createElement("div") );
209 marginDiv.style.cssText = div.style.cssText = divReset;
210 marginDiv.style.marginRight = marginDiv.style.width = "0";
211 div.style.width = "1px";
213 support.reliableMarginRight =
214 !parseFloat( ( window.getComputedStyle( marginDiv, null ) || {} ).marginRight );
217 if ( typeof div.style.zoom !== strundefined ) {
219 // Check if natively block-level elements act like inline-block
220 // elements when setting their display to 'inline' and giving
223 div.style.cssText = divReset + "width:1px;padding:1px;display:inline;zoom:1";
224 support.inlineBlockNeedsLayout = ( div.offsetWidth === 3 );
227 // Check if elements with layout shrink-wrap their children
228 div.style.display = "block";
229 div.innerHTML = "<div></div>";
230 div.firstChild.style.width = "5px";
231 support.shrinkWrapBlocks = ( div.offsetWidth !== 3 );
233 if ( support.inlineBlockNeedsLayout ) {
234 // Prevent IE 6 from affecting layout for positioned elements #11048
235 // Prevent IE from shrinking the body in IE 7 mode #12869
241 body.removeChild( container );
243 // Null elements to avoid leaks in IE
244 container = div = tds = marginDiv = null;
247 // Null elements to avoid leaks in IE
248 all = select = fragment = opt = a = input = null;