(function( jQuery ) {
-(function() {
-
- jQuery.support = {};
-
- var div = document.createElement("div");
-
- div.style.display = "none";
+jQuery.support = (function() {
+
+ var div = document.createElement( "div" ),
+ all,
+ a,
+ select,
+ opt,
+ input,
+ support,
+ fragment,
+ body,
+ bodyStyle,
+ tds,
+ events,
+ eventName,
+ i,
+ isSupported;
+
+ // Preliminary tests
div.innerHTML = " <link/><table></table><a href='/a' style='color:red;float:left;opacity:.55;'>a</a><input type='checkbox'/>";
- var all = div.getElementsByTagName("*"),
- a = div.getElementsByTagName("a")[0],
- select = document.createElement("select"),
- opt = select.appendChild( document.createElement("option") ),
- input = div.getElementsByTagName("input")[0];
+ all = div.getElementsByTagName( "*" );
+ a = div.getElementsByTagName( "a" )[ 0 ];
// Can't get basic test support
if ( !all || !all.length || !a ) {
- return;
+ return {};
}
- jQuery.support = {
+ // 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,
+ 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,
+ 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,
+ htmlSerialize: !!div.getElementsByTagName( "link" ).length,
// Get the style information from getAttribute
- // (IE uses .cssText insted)
+ // (IE uses .cssText instead)
style: /red/.test( a.getAttribute("style") ),
// Make sure that URLs aren't manipulated
// (IE normalizes it by default)
- hrefNormalized: a.getAttribute("href") === "/a",
+ hrefNormalized: ( a.getAttribute( "href" ) === "/a" ),
// Make sure that element opacity exists
// (IE uses filter instead)
optSelected: opt.selected,
// Will be defined later
+ submitBubbles: true,
+ changeBubbles: true,
deleteExpando: true,
- optDisabled: false,
- checkClone: false,
noCloneEvent: true,
- noCloneChecked: true,
- boxModel: null,
inlineBlockNeedsLayout: false,
shrinkWrapBlocks: false,
- reliableHiddenOffsets: true,
reliableMarginRight: true
};
+ // Make sure checked status is properly cloned
input.checked = true;
- jQuery.support.noCloneChecked = input.cloneNode( true ).checked;
+ support.noCloneChecked = input.cloneNode( true ).checked;
// Make sure that the options inside disabled selects aren't marked as disabled
- // (WebKit marks them as diabled)
+ // (WebKit marks them as disabled)
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();
-
- // 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)
- try {
- script.appendChild( document.createTextNode( "window." + id + "=1;" ) );
- } catch(e) {}
-
- root.insertBefore( script, root.firstChild );
-
- if ( window[ id ] ) {
- _scriptEval = true;
- delete window[ id ];
- } else {
- _scriptEval = false;
- }
-
- root.removeChild( script );
- }
-
- return _scriptEval;
- };
+ 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) {
- jQuery.support.deleteExpando = false;
+ } catch( e ) {
+ support.deleteExpando = false;
}
if ( !div.addEventListener && div.attachEvent && div.fireEvent ) {
- div.attachEvent("onclick", function click() {
+ 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");
+ support.noCloneEvent = false;
+ div.detachEvent( "onclick", click );
+ } );
+ div.cloneNode( true ).fireEvent( "onclick" );
}
- div = document.createElement("div");
div.innerHTML = "<input type='radio' name='radiotest' checked='checked'/>";
- var fragment = document.createDocumentFragment();
+ 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;
+ 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.innerHTML = "";
- 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 = "<div style='width:4px;'></div>";
- jQuery.support.shrinkWrapBlocks = div.offsetWidth !== 2;
- }
+ // Figure out if the W3C box model works as expected
+ div.style.width = div.style.paddingLeft = "1px";
+
+ // We use our own, invisible, body
+ body = document.createElement( "body" );
+ bodyStyle = {
+ visibility: "hidden",
+ width: 0,
+ height: 0,
+ border: 0,
+ margin: 0
+ };
+ for ( i in bodyStyle ) {
+ body.style[ i ] = bodyStyle[ i ];
+ }
+ body.appendChild( div );
+ document.documentElement.appendChild( body );
+
+ 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 = "<div style='width:4px;'></div>";
+ support.shrinkWrapBlocks = ( div.offsetWidth !== 2 );
+ }
- div.innerHTML = "<table><tr><td style='padding:0;border:0;display:none'></td><td>t</td></tr></table>";
- 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, null).marginRight, 10) || 0 ) === 0;
- }
+ div.innerHTML = "<table><tr><td style='padding:0;border:0;display:none'></td><td>t</td></tr></table>";
+ 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 ) {
+ div.style.width = "1px";
+ div.style.marginRight = "0";
+ support.reliableMarginRight =
+ ( parseInt( document.defaultView.getComputedStyle(div).marginRight, 10 ) || 0 ) === 0;
+ }
- body.removeChild( div ).style.display = "none";
- div = tds = null;
- });
+ // Remove the body element we added
+ document.documentElement.removeChild( body );
// 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";
+ // 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;
}
- return isSupported;
- };
-
- jQuery.support.submitBubbles = eventSupported("submit");
- jQuery.support.changeBubbles = eventSupported("change");
+ }
// release memory in IE
- div = all = a = null;
+ body = div = all = a = tds = undefined;
+
+ return support;
})();
+
+// Keep track of boxModel
+jQuery.boxModel = jQuery.support.boxModel;
+
})( jQuery );
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