(function( jQuery ) { jQuery.support = (function() { var div = document.createElement( "div" ), documentElement = document.documentElement, all, a, select, opt, input, marginDiv, support, fragment, body, testElementParent, testElement, testElementStyle, tds, events, eventName, i, isSupported; // Preliminary tests div.setAttribute("className", "t"); div.innerHTML = "
a"; all = div.getElementsByTagName( "*" ); a = div.getElementsByTagName( "a" )[ 0 ]; // Can't get basic test support if ( !all || !all.length || !a ) { return {}; } // First batch of supports tests select = document.createElement( "select" ); opt = select.appendChild( document.createElement("option") ); input = div.getElementsByTagName( "input" )[ 0 ]; 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 instead) style: /top/.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) // 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) cssFloat: !!a.style.cssFloat, // Make sure that if no value is specified for a checkbox // that it defaults to "on". // (WebKit defaults to "" instead) checkOn: ( input.value === "on" ), // Make sure that a selected-by-default option has a working selected property. // (WebKit defaults to false instead of true, IE too, if it's in an optgroup) optSelected: opt.selected, // Test setAttribute on camelCase class. If it works, we need attrFixes when doing get/setAttribute (ie6/7) getSetAttribute: div.className !== "t", // Will be defined later submitBubbles: true, changeBubbles: true, focusinBubbles: false, deleteExpando: true, noCloneEvent: true, inlineBlockNeedsLayout: false, shrinkWrapBlocks: false, reliableMarginRight: true }; // Make sure checked status is properly cloned input.checked = true; support.noCloneChecked = input.cloneNode( true ).checked; // Make sure that the options inside disabled selects aren't marked as disabled // (WebKit marks them as disabled) select.disabled = true; support.optDisabled = !opt.disabled; // Test to see if it's possible to delete an expando from an element // Fails in Internet Explorer try { delete div.test; } catch( e ) { support.deleteExpando = false; } if ( !div.addEventListener && div.attachEvent && div.fireEvent ) { div.attachEvent( "onclick", function() { // Cloning a node shouldn't copy over any // bound event handlers (IE does this) support.noCloneEvent = false; }); div.cloneNode( true ).fireEvent( "onclick" ); } // Check if a radio maintains it's value // after being appended to the DOM input = document.createElement("input"); input.value = "t"; input.setAttribute("type", "radio"); support.radioValue = input.value === "t"; input.setAttribute("checked", "checked"); div.appendChild( input ); fragment = document.createDocumentFragment(); fragment.appendChild( div.firstChild ); // WebKit doesn't clone checked state correctly in fragments support.checkClone = fragment.cloneNode( true ).cloneNode( true ).lastChild.checked; div.innerHTML = ""; // Figure out if the W3C box model works as expected div.style.width = div.style.paddingLeft = "1px"; body = document.getElementsByTagName( "body" )[ 0 ]; // We use our own, invisible, body unless the body is already present // in which case we use a div (#9239) testElement = document.createElement( body ? "div" : "body" ); testElementStyle = { visibility: "hidden", width: 0, height: 0, border: 0, margin: 0 }; if ( body ) { jQuery.extend( testElementStyle, { position: "absolute", left: -1000, top: -1000 }); } for ( i in testElementStyle ) { testElement.style[ i ] = testElementStyle[ i ]; } testElement.appendChild( div ); testElementParent = body || documentElement; testElementParent.insertBefore( testElement, testElementParent.firstChild ); // Check if a disconnected checkbox will retain its checked // value of true after appended to the DOM (IE6/7) support.appendChecked = input.checked; support.boxModel = div.offsetWidth === 2; if ( "zoom" in div.style ) { // Check if natively block-level elements act like inline-block // elements when setting their display to 'inline' and giving // them layout // (IE < 8 does this) div.style.display = "inline"; div.style.zoom = 1; support.inlineBlockNeedsLayout = ( div.offsetWidth === 2 ); // Check if elements with layout shrink-wrap their children // (IE 6 does this) div.style.display = ""; div.innerHTML = "
"; support.shrinkWrapBlocks = ( div.offsetWidth !== 2 ); } div.innerHTML = "
t
"; tds = div.getElementsByTagName( "td" ); // Check if table cells still have offsetWidth/Height when they are set // to display:none and there are still other visible table cells in a // table row; if so, offsetWidth/Height are not reliable for use when // determining if an element has been hidden directly using // display:none (it is still safe to use offsets if a parent element is // hidden; don safety goggles and see bug #4512 for more information). // (only IE 8 fails this test) isSupported = ( tds[ 0 ].offsetHeight === 0 ); tds[ 0 ].style.display = ""; tds[ 1 ].style.display = "none"; // Check if empty table cells still have offsetWidth/Height // (IE < 8 fail this test) support.reliableHiddenOffsets = isSupported && ( tds[ 0 ].offsetHeight === 0 ); div.innerHTML = ""; // Check if div with explicit width and no margin-right incorrectly // gets computed margin-right based on width of container. For more // info see bug #3333 // Fails in WebKit before Feb 2011 nightlies // WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right if ( document.defaultView && document.defaultView.getComputedStyle ) { marginDiv = document.createElement( "div" ); marginDiv.style.width = "0"; marginDiv.style.marginRight = "0"; div.appendChild( marginDiv ); support.reliableMarginRight = ( parseInt( ( document.defaultView.getComputedStyle( marginDiv, null ) || { marginRight: 0 } ).marginRight, 10 ) || 0 ) === 0; } // Remove the body element we added testElement.innerHTML = ""; testElementParent.removeChild( testElement ); // Technique from Juriy Zaytsev // http://thinkweb2.com/projects/prototype/detecting-event-support-without-browser-sniffing/ // We only care about the case where non-standard event systems // are used, namely in IE. Short-circuiting here helps us to // avoid an eval call (in setAttribute) which can cause CSP // to go haywire. See: https://developer.mozilla.org/en/Security/CSP if ( div.attachEvent ) { for( i in { submit: 1, change: 1, focusin: 1 } ) { eventName = "on" + i; isSupported = ( eventName in div ); if ( !isSupported ) { div.setAttribute( eventName, "return;" ); isSupported = ( typeof div[ eventName ] === "function" ); } support[ i + "Bubbles" ] = isSupported; } } // Null connected elements to avoid leaks in IE marginDiv = div = input = null; return support; })(); // Keep track of boxModel jQuery.boxModel = jQuery.support.boxModel; })( jQuery );