a";
var all = div.getElementsByTagName("*"),
- a = div.getElementsByTagName("a")[0];
+ a = div.getElementsByTagName("a")[0],
+ select = document.createElement("select"),
+ opt = select.appendChild( document.createElement("option") );
// Can't get basic test support
if ( !all || !all.length || !a ) {
@@ -20,7 +24,7 @@
jQuery.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
@@ -40,22 +44,43 @@
// Make sure that element opacity exists
// (IE uses filter instead)
- opacity: a.style.opacity === "0.55",
+ // 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: div.getElementsByTagName("input")[0].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,
scriptEval: false,
noCloneEvent: true,
- boxModel: null
+ boxModel: null,
+ inlineBlockNeedsLayout: false,
+ shrinkWrapBlocks: false,
+ reliableHiddenOffsets: true
};
+ // 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;
+
script.type = "text/javascript";
try {
script.appendChild( document.createTextNode( "window." + id + "=1;" ) );
- } catch(e){}
+ } catch(e) {}
root.insertBefore( script, root.firstChild );
@@ -67,10 +92,19 @@
delete window[ id ];
}
+ // Test to see if it's possible to delete an expando from an element
+ // Fails in Internet Explorer
+ try {
+ delete script.test;
+
+ } catch(e) {
+ jQuery.support.deleteExpando = false;
+ }
+
root.removeChild( script );
if ( 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;
@@ -79,31 +113,84 @@
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(){
+ jQuery(function() {
var div = document.createElement("div");
div.style.width = div.style.paddingLeft = "1px";
document.body.appendChild( div );
jQuery.boxModel = jQuery.support.boxModel = div.offsetWidth === 2;
- document.body.removeChild( div ).style.display = 'none';
- div = null;
+
+ 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 = "";
+
+ document.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;
+
+ 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
root = script = div = all = a = null;
})();
-
-jQuery.props = {
- "for": "htmlFor",
- "class": "className",
- readonly: "readOnly",
- maxlength: "maxLength",
- cellspacing: "cellSpacing",
- rowspan: "rowSpan",
- colspan: "colSpan",
- tabindex: "tabIndex",
- usemap: "useMap",
- frameborder: "frameBorder"
-};
+})( jQuery );