(function( jQuery ) { (function() { jQuery.support = {}; var div = document.createElement("div"); div.style.display = "none"; div.innerHTML = "
a"; var all = div.getElementsByTagName("*"), a = div.getElementsByTagName("a")[0], select = document.createElement("select"), opt = select.appendChild( document.createElement("option") ), input = div.getElementsByTagName("input")[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 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) // 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, // Will be defined later deleteExpando: true, optDisabled: false, checkClone: false, noCloneEvent: true, noCloneChecked: true, boxModel: null, inlineBlockNeedsLayout: false, shrinkWrapBlocks: false, reliableHiddenOffsets: true, reliableMarginRight: true }; input.checked = true; jQuery.support.noCloneChecked = input.cloneNode( true ).checked; // Make sure that the options inside disabled selects aren't marked as disabled // (WebKit marks them as diabled) select.disabled = true; jQuery.support.optDisabled = !opt.disabled; var _scriptEval = null; jQuery.support.scriptEval = function() { if ( _scriptEval === null ) { var root = document.documentElement, script = document.createElement("script"), id = "script" + jQuery.now(); 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 ] ) { _scriptEval = true; delete window[ id ]; } else { _scriptEval = false; } root.removeChild( script ); // release memory in IE root = script = id = null; } return _scriptEval; }; // Test to see if it's possible to delete an expando from an element // Fails in Internet Explorer try { delete div.test; } catch(e) { jQuery.support.deleteExpando = false; } if ( !div.addEventListener && div.attachEvent && div.fireEvent ) { div.attachEvent("onclick", function click() { // Cloning a node shouldn't copy over any // bound event handlers (IE does this) jQuery.support.noCloneEvent = false; div.detachEvent("onclick", click); }); div.cloneNode(true).fireEvent("onclick"); } div = document.createElement("div"); div.innerHTML = ""; var fragment = document.createDocumentFragment(); fragment.appendChild( div.firstChild ); // WebKit doesn't clone checked state correctly in fragments jQuery.support.checkClone = fragment.cloneNode(true).cloneNode(true).lastChild.checked; // Figure out if the W3C box model works as expected // document.body must exist before we can do this jQuery(function() { var div = document.createElement("div"), body = document.getElementsByTagName("body")[0]; // Frameset documents with no body should not run this code if ( !body ) { return; } div.style.width = div.style.paddingLeft = "1px"; body.appendChild( div ); jQuery.boxModel = jQuery.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; jQuery.support.inlineBlockNeedsLayout = div.offsetWidth === 2; // Check if elements with layout shrink-wrap their children // (IE 6 does this) div.style.display = ""; div.innerHTML = "
"; jQuery.support.shrinkWrapBlocks = div.offsetWidth !== 2; } div.innerHTML = "
t
"; var 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) jQuery.support.reliableHiddenOffsets = 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) jQuery.support.reliableHiddenOffsets = jQuery.support.reliableHiddenOffsets && 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 ) { div.style.width = "1px"; div.style.marginRight = "0"; jQuery.support.reliableMarginRight = ( parseInt(document.defaultView.getComputedStyle(div).marginRight, 10) || 0 ) === 0; } body.removeChild( div ).style.display = "none"; div = tds = 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; // 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 ( !el.attachEvent ) { return true; } 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 div = all = a = null; })(); })( jQuery );