2 * jQuery @VERSION - New Wave Javascript
4 * Copyright (c) 2007 John Resig (jquery.com)
5 * Dual licensed under the MIT (MIT-LICENSE.txt)
6 * and GPL (GPL-LICENSE.txt) licenses.
12 // Global undefined variable
13 window.undefined = window.undefined;
16 * Create a new jQuery Object
21 * @param String|Function|Element|Array<Element>|jQuery a selector
22 * @param jQuery|Element|Array<Element> c context
25 var jQuery = function(a,c) {
26 // If the context is global, return a new object
28 return new jQuery(a,c);
30 // Make sure that a selection was provided
33 // HANDLE: $(function)
34 // Shortcut for document ready
35 if ( jQuery.isFunction(a) )
36 return new jQuery(document)[ jQuery.fn.ready ? "ready" : "load" ]( a );
38 // Handle HTML strings
39 if ( typeof a == "string" ) {
40 // HANDLE: $(html) -> $(array)
41 var m = /^[^<]*(<(.|\s)+>)[^>]*$/.exec(a);
43 a = jQuery.clean( [ m[1] ] );
47 return new jQuery( c ).find( a );
52 a.constructor == Array && a ||
54 // HANDLE: $(arraylike)
55 // Watch for when an array-like object is passed as the selector
56 (a.jquery || a.length && a != window && !a.nodeType && a[0] != undefined && a[0].nodeType) && jQuery.makeArray( a ) ||
62 // Map over the $ in case of overwrite
63 if ( typeof $ != "undefined" )
66 // Map the jQuery namespace to the '$' one
70 * This function accepts a string containing a CSS or
71 * basic XPath selector which is then used to match a set of elements.
73 * The core functionality of jQuery centers around this function.
74 * Everything in jQuery is based upon this, or uses this in some way.
75 * The most basic use of this function is to pass in an expression
76 * (usually consisting of CSS or XPath), which then finds all matching
79 * By default, $() looks for DOM elements within the context of the
80 * current HTML document.
82 * @example $("div > p")
83 * @desc Finds all p elements that are children of a div element.
84 * @before <p>one</p> <div><p>two</p></div> <p>three</p>
85 * @result [ <p>two</p> ]
87 * @example $("input:radio", document.forms[0])
88 * @desc Searches for all inputs of type radio within the first form in the document
90 * @example $("div", xml.responseXML)
91 * @desc This finds all div elements within the specified XML document.
94 * @param String expr An expression to search with
95 * @param Element|jQuery context (optional) A DOM Element, Document or jQuery to use as context
99 * @see $(Element<Array>)
103 * Create DOM elements on-the-fly from the provided String of raw HTML.
105 * @example $("<div><p>Hello</p></div>").appendTo("#body")
106 * @desc Creates a div element (and all of its contents) dynamically,
107 * and appends it to the element with the ID of body. Internally, an
108 * element is created and it's innerHTML property set to the given markup.
109 * It is therefore both quite flexible and limited.
112 * @param String html A string of HTML to create on the fly.
115 * @see appendTo(String)
119 * Wrap jQuery functionality around a single or multiple DOM Element(s).
121 * This function also accepts XML Documents and Window objects
122 * as valid arguments (even though they are not DOM Elements).
124 * @example $(document.body).background( "black" );
125 * @desc Sets the background color of the page to black.
127 * @example $( myForm.elements ).hide()
128 * @desc Hides all the input elements within a form
131 * @param Element|Array<Element> elems DOM element(s) to be encapsulated by a jQuery object.
137 * A shorthand for $(document).ready(), allowing you to bind a function
138 * to be executed when the DOM document has finished loading. This function
139 * behaves just like $(document).ready(), in that it should be used to wrap
140 * all of the other $() operations on your page. While this function is,
141 * technically, chainable - there really isn't much use for chaining against it.
142 * You can have as many $(document).ready events on your page as you like.
144 * See ready(Function) for details about the ready event.
146 * @example $(function(){
147 * // Document is ready
149 * @desc Executes the function when the DOM is ready to be used.
151 * @example jQuery(function($) {
152 * // Your code using failsafe $ alias here...
154 * @desc Uses both the shortcut for $(document).ready() and the argument
155 * to write failsafe jQuery code using the $ alias, without relying on the
159 * @param Function fn The function to execute when the DOM is ready.
162 * @see ready(Function)
165 jQuery.fn = jQuery.prototype = {
167 * The current version of jQuery.
178 * The number of elements currently matched.
180 * @example $("img").length;
181 * @before <img src="test1.jpg"/> <img src="test2.jpg"/>
191 * The number of elements currently matched.
193 * @example $("img").size();
194 * @before <img src="test1.jpg"/> <img src="test2.jpg"/>
208 * Access all matched elements. This serves as a backwards-compatible
209 * way of accessing all matched elements (other than the jQuery object
210 * itself, which is, in fact, an array of elements).
212 * @example $("img").get();
213 * @before <img src="test1.jpg"/> <img src="test2.jpg"/>
214 * @result [ <img src="test1.jpg"/> <img src="test2.jpg"/> ]
215 * @desc Selects all images in the document and returns the DOM Elements as an Array
218 * @type Array<Element>
223 * Access a single matched element. num is used to access the
224 * Nth element matched.
226 * @example $("img").get(0);
227 * @before <img src="test1.jpg"/> <img src="test2.jpg"/>
228 * @result [ <img src="test1.jpg"/> ]
229 * @desc Selects all images in the document and returns the first one
233 * @param Number num Access the element in the Nth position.
236 get: function( num ) {
237 return num == undefined ?
239 // Return a 'clean' array
240 jQuery.makeArray( this ) :
242 // Return just the object
247 * Set the jQuery object to an array of elements, while maintaining
250 * @example $("img").pushStack([ document.body ]);
251 * @result $("img").pushStack() == [ document.body ]
256 * @param Elements elems An array of elements
259 pushStack: function( a ) {
261 ret.prevObject = this;
266 * Set the jQuery object to an array of elements. This operation is
267 * completely destructive - be sure to use .pushStack() if you wish to maintain
270 * @example $("img").setArray([ document.body ]);
271 * @result $("img").setArray() == [ document.body ]
276 * @param Elements elems An array of elements
279 setArray: function( a ) {
281 [].push.apply( this, a );
286 * Execute a function within the context of every matched element.
287 * This means that every time the passed-in function is executed
288 * (which is once for every element matched) the 'this' keyword
289 * points to the specific element.
291 * Additionally, the function, when executed, is passed a single
292 * argument representing the position of the element in the matched
295 * @example $("img").each(function(i){
296 * this.src = "test" + i + ".jpg";
298 * @before <img/><img/>
299 * @result <img src="test0.jpg"/><img src="test1.jpg"/>
300 * @desc Iterates over two images and sets their src property
304 * @param Function fn A function to execute
307 each: function( fn, args ) {
308 return jQuery.each( this, fn, args );
312 * Searches every matched element for the object and returns
313 * the index of the element, if found, starting with zero.
314 * Returns -1 if the object wasn't found.
316 * @example $("*").index( $('#foobar')[0] )
317 * @before <div id="foobar"><b></b><span id="foo"></span></div>
319 * @desc Returns the index for the element with ID foobar
321 * @example $("*").index( $('#foo')[0] )
322 * @before <div id="foobar"><b></b><span id="foo"></span></div>
324 * @desc Returns the index for the element with ID foo within another element
326 * @example $("*").index( $('#bar')[0] )
327 * @before <div id="foobar"><b></b><span id="foo"></span></div>
329 * @desc Returns -1, as there is no element with ID bar
333 * @param Element subject Object to search for
336 index: function( obj ) {
338 this.each(function(i){
339 if ( this == obj ) pos = i;
345 * Access a property on the first matched element.
346 * This method makes it easy to retrieve a property value
347 * from the first matched element.
349 * @example $("img").attr("src");
350 * @before <img src="test.jpg"/>
352 * @desc Returns the src attribute from the first image in the document.
356 * @param String name The name of the property to access.
357 * @cat DOM/Attributes
361 * Set a key/value object as properties to all matched elements.
363 * This serves as the best way to set a large number of properties
364 * on all matched elements.
366 * @example $("img").attr({ src: "test.jpg", alt: "Test Image" });
368 * @result <img src="test.jpg" alt="Test Image"/>
369 * @desc Sets src and alt attributes to all images.
373 * @param Map properties Key/value pairs to set as object properties.
374 * @cat DOM/Attributes
378 * Set a single property to a value, on all matched elements.
380 * Can compute values provided as ${formula}, see second example.
382 * Note that you can't set the name property of input elements in IE.
383 * Use $(html) or .append(html) or .html(html) to create elements
384 * on the fly including the name property.
386 * @example $("img").attr("src","test.jpg");
388 * @result <img src="test.jpg"/>
389 * @desc Sets src attribute to all images.
391 * @example $("img").attr("title", "${this.src}");
392 * @before <img src="test.jpg" />
393 * @result <img src="test.jpg" title="test.jpg" />
394 * @desc Sets title attribute from src attribute, a shortcut for attr(String,Function)
398 * @param String key The name of the property to set.
399 * @param Object value The value to set the property to.
400 * @cat DOM/Attributes
404 * Set a single property to a computed value, on all matched elements.
406 * Instead of a value, a function is provided, that computes the value.
408 * @example $("img").attr("title", function() { return this.src });
409 * @before <img src="test.jpg" />
410 * @result <img src="test.jpg" title="test.jpg" />
411 * @desc Sets title attribute from src attribute.
413 * @example $("img").attr("title", function(index) { return this.title + (i + 1); });
414 * @before <img title="pic" /><img title="pic" /><img title="pic" />
415 * @result <img title="pic1" /><img title="pic2" /><img title="pic3" />
416 * @desc Enumerate title attribute.
420 * @param String key The name of the property to set.
421 * @param Function value A function returning the value to set.
422 * Scope: Current element, argument: Index of current element
423 * @cat DOM/Attributes
425 attr: function( key, value, type ) {
428 // Look for the case where we're accessing a style value
429 if ( key.constructor == String )
430 if ( value == undefined )
431 return this.length && jQuery[ type || "attr" ]( this[0], key ) || undefined;
437 // Check to see if we're setting style values
438 return this.each(function(index){
439 // Set all the styles
440 for ( var prop in obj )
442 type ? this.style : this,
443 prop, jQuery.prop(this, obj[prop], type, index, prop)
449 * Access a style property on the first matched element.
450 * This method makes it easy to retrieve a style property value
451 * from the first matched element.
453 * @example $("p").css("color");
454 * @before <p style="color:red;">Test Paragraph.</p>
456 * @desc Retrieves the color style of the first paragraph
458 * @example $("p").css("font-weight");
459 * @before <p style="font-weight: bold;">Test Paragraph.</p>
461 * @desc Retrieves the font-weight style of the first paragraph.
465 * @param String name The name of the property to access.
470 * Set a key/value object as style properties to all matched elements.
472 * This serves as the best way to set a large number of style properties
473 * on all matched elements.
475 * @example $("p").css({ color: "red", background: "blue" });
476 * @before <p>Test Paragraph.</p>
477 * @result <p style="color:red; background:blue;">Test Paragraph.</p>
478 * @desc Sets color and background styles to all p elements.
482 * @param Map properties Key/value pairs to set as style properties.
487 * Set a single style property to a value, on all matched elements.
488 * If a number is provided, it is automatically converted into a pixel value.
490 * @example $("p").css("color","red");
491 * @before <p>Test Paragraph.</p>
492 * @result <p style="color:red;">Test Paragraph.</p>
493 * @desc Changes the color of all paragraphs to red
495 * @example $("p").css("left",30);
496 * @before <p>Test Paragraph.</p>
497 * @result <p style="left:30px;">Test Paragraph.</p>
498 * @desc Changes the left of all paragraphs to "30px"
502 * @param String key The name of the property to set.
503 * @param String|Number value The value to set the property to.
506 css: function( key, value ) {
507 return this.attr( key, value, "curCSS" );
511 * Get the text contents of all matched elements. The result is
512 * a string that contains the combined text contents of all matched
513 * elements. This method works on both HTML and XML documents.
515 * @example $("p").text();
516 * @before <p><b>Test</b> Paragraph.</p><p>Paraparagraph</p>
517 * @result Test Paragraph.Paraparagraph
518 * @desc Gets the concatenated text of all paragraphs
522 * @cat DOM/Attributes
526 * Set the text contents of all matched elements.
528 * Similar to html(), but escapes HTML (replace "<" and ">" with their
531 * @example $("p").text("<b>Some</b> new text.");
532 * @before <p>Test Paragraph.</p>
533 * @result <p><b>Some</b> new text.</p>
534 * @desc Sets the text of all paragraphs.
536 * @example $("p").text("<b>Some</b> new text.", true);
537 * @before <p>Test Paragraph.</p>
538 * @result <p>Some new text.</p>
539 * @desc Sets the text of all paragraphs.
543 * @param String val The text value to set the contents of the element to.
544 * @cat DOM/Attributes
547 if ( typeof e == "string" )
548 return this.empty().append( document.createTextNode( e ) );
551 jQuery.each( e || this, function(){
552 jQuery.each( this.childNodes, function(){
553 if ( this.nodeType != 8 )
554 t += this.nodeType != 1 ?
555 this.nodeValue : jQuery.fn.text([ this ]);
562 * Wrap all matched elements with a structure of other elements.
563 * This wrapping process is most useful for injecting additional
564 * stucture into a document, without ruining the original semantic
565 * qualities of a document.
567 * This works by going through the first element
568 * provided (which is generated, on the fly, from the provided HTML)
569 * and finds the deepest ancestor element within its
570 * structure - it is that element that will en-wrap everything else.
572 * This does not work with elements that contain text. Any necessary text
573 * must be added after the wrapping is done.
575 * @example $("p").wrap("<div class='wrap'></div>");
576 * @before <p>Test Paragraph.</p>
577 * @result <div class='wrap'><p>Test Paragraph.</p></div>
581 * @param String html A string of HTML, that will be created on the fly and wrapped around the target.
582 * @cat DOM/Manipulation
586 * Wrap all matched elements with a structure of other elements.
587 * This wrapping process is most useful for injecting additional
588 * stucture into a document, without ruining the original semantic
589 * qualities of a document.
591 * This works by going through the first element
592 * provided and finding the deepest ancestor element within its
593 * structure - it is that element that will en-wrap everything else.
595 * This does not work with elements that contain text. Any necessary text
596 * must be added after the wrapping is done.
598 * @example $("p").wrap( document.getElementById('content') );
599 * @before <p>Test Paragraph.</p><div id="content"></div>
600 * @result <div id="content"><p>Test Paragraph.</p></div>
604 * @param Element elem A DOM element that will be wrapped around the target.
605 * @cat DOM/Manipulation
608 // The elements to wrap the target around
609 var a = jQuery.clean(arguments);
611 // Wrap each of the matched elements individually
612 return this.each(function(){
613 // Clone the structure that we're using to wrap
614 var b = a[0].cloneNode(true);
616 // Insert it before the element to be wrapped
617 this.parentNode.insertBefore( b, this );
619 // Find the deepest point in the wrap structure
620 while ( b.firstChild )
623 // Move the matched element to within the wrap structure
624 b.appendChild( this );
629 * Append content to the inside of every matched element.
631 * This operation is similar to doing an appendChild to all the
632 * specified elements, adding them into the document.
634 * @example $("p").append("<b>Hello</b>");
635 * @before <p>I would like to say: </p>
636 * @result <p>I would like to say: <b>Hello</b></p>
637 * @desc Appends some HTML to all paragraphs.
639 * @example $("p").append( $("#foo")[0] );
640 * @before <p>I would like to say: </p><b id="foo">Hello</b>
641 * @result <p>I would like to say: <b id="foo">Hello</b></p>
642 * @desc Appends an Element to all paragraphs.
644 * @example $("p").append( $("b") );
645 * @before <p>I would like to say: </p><b>Hello</b>
646 * @result <p>I would like to say: <b>Hello</b></p>
647 * @desc Appends a jQuery object (similar to an Array of DOM Elements) to all paragraphs.
651 * @param <Content> content Content to append to the target
652 * @cat DOM/Manipulation
653 * @see prepend(<Content>)
654 * @see before(<Content>)
655 * @see after(<Content>)
658 return this.domManip(arguments, true, 1, function(a){
659 this.appendChild( a );
664 * Prepend content to the inside of every matched element.
666 * This operation is the best way to insert elements
667 * inside, at the beginning, of all matched elements.
669 * @example $("p").prepend("<b>Hello</b>");
670 * @before <p>I would like to say: </p>
671 * @result <p><b>Hello</b>I would like to say: </p>
672 * @desc Prepends some HTML to all paragraphs.
674 * @example $("p").prepend( $("#foo")[0] );
675 * @before <p>I would like to say: </p><b id="foo">Hello</b>
676 * @result <p><b id="foo">Hello</b>I would like to say: </p>
677 * @desc Prepends an Element to all paragraphs.
679 * @example $("p").prepend( $("b") );
680 * @before <p>I would like to say: </p><b>Hello</b>
681 * @result <p><b>Hello</b>I would like to say: </p>
682 * @desc Prepends a jQuery object (similar to an Array of DOM Elements) to all paragraphs.
686 * @param <Content> content Content to prepend to the target.
687 * @cat DOM/Manipulation
688 * @see append(<Content>)
689 * @see before(<Content>)
690 * @see after(<Content>)
692 prepend: function() {
693 return this.domManip(arguments, true, -1, function(a){
694 this.insertBefore( a, this.firstChild );
699 * Insert content before each of the matched elements.
701 * @example $("p").before("<b>Hello</b>");
702 * @before <p>I would like to say: </p>
703 * @result <b>Hello</b><p>I would like to say: </p>
704 * @desc Inserts some HTML before all paragraphs.
706 * @example $("p").before( $("#foo")[0] );
707 * @before <p>I would like to say: </p><b id="foo">Hello</b>
708 * @result <b id="foo">Hello</b><p>I would like to say: </p>
709 * @desc Inserts an Element before all paragraphs.
711 * @example $("p").before( $("b") );
712 * @before <p>I would like to say: </p><b>Hello</b>
713 * @result <b>Hello</b><p>I would like to say: </p>
714 * @desc Inserts a jQuery object (similar to an Array of DOM Elements) before all paragraphs.
718 * @param <Content> content Content to insert before each target.
719 * @cat DOM/Manipulation
720 * @see append(<Content>)
721 * @see prepend(<Content>)
722 * @see after(<Content>)
725 return this.domManip(arguments, false, 1, function(a){
726 this.parentNode.insertBefore( a, this );
731 * Insert content after each of the matched elements.
733 * @example $("p").after("<b>Hello</b>");
734 * @before <p>I would like to say: </p>
735 * @result <p>I would like to say: </p><b>Hello</b>
736 * @desc Inserts some HTML after all paragraphs.
738 * @example $("p").after( $("#foo")[0] );
739 * @before <b id="foo">Hello</b><p>I would like to say: </p>
740 * @result <p>I would like to say: </p><b id="foo">Hello</b>
741 * @desc Inserts an Element after all paragraphs.
743 * @example $("p").after( $("b") );
744 * @before <b>Hello</b><p>I would like to say: </p>
745 * @result <p>I would like to say: </p><b>Hello</b>
746 * @desc Inserts a jQuery object (similar to an Array of DOM Elements) after all paragraphs.
750 * @param <Content> content Content to insert after each target.
751 * @cat DOM/Manipulation
752 * @see append(<Content>)
753 * @see prepend(<Content>)
754 * @see before(<Content>)
757 return this.domManip(arguments, false, -1, function(a){
758 this.parentNode.insertBefore( a, this.nextSibling );
763 * End the most recent 'destructive' operation, reverting the list of matched elements
764 * back to its previous state. After an end operation, the list of matched elements will
765 * revert to the last state of matched elements.
767 * If there was no destructive operation before, an empty set is returned.
769 * @example $("p").find("span").end();
770 * @before <p><span>Hello</span>, how are you?</p>
771 * @result [ <p>...</p> ]
772 * @desc Selects all paragraphs, finds span elements inside these, and reverts the
773 * selection back to the paragraphs.
777 * @cat DOM/Traversing
780 return this.prevObject || jQuery([]);
784 * Searches for all elements that match the specified expression.
786 * This method is a good way to find additional descendant
787 * elements with which to process.
789 * All searching is done using a jQuery expression. The expression can be
790 * written using CSS 1-3 Selector syntax, or basic XPath.
792 * @example $("p").find("span");
793 * @before <p><span>Hello</span>, how are you?</p>
794 * @result [ <span>Hello</span> ]
795 * @desc Starts with all paragraphs and searches for descendant span
796 * elements, same as $("p span")
800 * @param String expr An expression to search with.
801 * @cat DOM/Traversing
804 return this.pushStack( jQuery.map( this, function(a){
805 return jQuery.find(t,a);
810 * Clone matched DOM Elements and select the clones.
812 * This is useful for moving copies of the elements to another
813 * location in the DOM.
815 * @example $("b").clone().prependTo("p");
816 * @before <b>Hello</b><p>, how are you?</p>
817 * @result <b>Hello</b><p><b>Hello</b>, how are you?</p>
818 * @desc Clones all b elements (and selects the clones) and prepends them to all paragraphs.
822 * @param Boolean deep (Optional) Set to false if you don't want to clone all descendant nodes, in addition to the element itself.
823 * @cat DOM/Manipulation
825 clone: function(deep) {
826 return this.pushStack( jQuery.map( this, function(a){
827 var a = a.cloneNode( deep != undefined ? deep : true );
828 a.$events = null; // drop $events expando to avoid firing incorrect events
834 * Removes all elements from the set of matched elements that do not
835 * match the specified expression(s). This method is used to narrow down
836 * the results of a search.
838 * Provide a comma-separated list of expressions to apply multiple filters at once.
840 * @example $("p").filter(".selected")
841 * @before <p class="selected">Hello</p><p>How are you?</p>
842 * @result [ <p class="selected">Hello</p> ]
843 * @desc Selects all paragraphs and removes those without a class "selected".
845 * @example $("p").filter(".selected, :first")
846 * @before <p>Hello</p><p>Hello Again</p><p class="selected">And Again</p>
847 * @result [ <p>Hello</p>, <p class="selected">And Again</p> ]
848 * @desc Selects all paragraphs and removes those without class "selected" and being the first one.
852 * @param String expression Expression(s) to search with.
853 * @cat DOM/Traversing
857 * Removes all elements from the set of matched elements that do not
858 * pass the specified filter. This method is used to narrow down
859 * the results of a search.
861 * @example $("p").filter(function(index) {
862 * return $("ol", this).length == 0;
864 * @before <p><ol><li>Hello</li></ol></p><p>How are you?</p>
865 * @result [ <p>How are you?</p> ]
866 * @desc Remove all elements that have a child ol element
870 * @param Function filter A function to use for filtering
871 * @cat DOM/Traversing
873 filter: function(t) {
874 return this.pushStack(
875 jQuery.isFunction( t ) &&
876 jQuery.grep(this, function(el, index){
877 return t.apply(el, [index])
880 jQuery.multiFilter(t,this) );
884 * Removes the specified Element from the set of matched elements. This
885 * method is used to remove a single Element from a jQuery object.
887 * @example $("p").not( $("#selected")[0] )
888 * @before <p>Hello</p><p id="selected">Hello Again</p>
889 * @result [ <p>Hello</p> ]
890 * @desc Removes the element with the ID "selected" from the set of all paragraphs.
894 * @param Element el An element to remove from the set
895 * @cat DOM/Traversing
899 * Removes elements matching the specified expression from the set
900 * of matched elements. This method is used to remove one or more
901 * elements from a jQuery object.
903 * @example $("p").not("#selected")
904 * @before <p>Hello</p><p id="selected">Hello Again</p>
905 * @result [ <p>Hello</p> ]
906 * @desc Removes the element with the ID "selected" from the set of all paragraphs.
910 * @param String expr An expression with which to remove matching elements
911 * @cat DOM/Traversing
915 * Removes any elements inside the array of elements from the set
916 * of matched elements. This method is used to remove one or more
917 * elements from a jQuery object.
919 * @example $("p").not( $("div p.selected") )
920 * @before <div><p>Hello</p><p class="selected">Hello Again</p></div>
921 * @result [ <p>Hello</p> ]
922 * @desc Removes all elements that match "div p.selected" from the total set of all paragraphs.
926 * @param jQuery elems A set of elements to remove from the jQuery set of matched elements.
927 * @cat DOM/Traversing
930 return this.pushStack(
931 t.constructor == String &&
932 jQuery.multiFilter(t, this, true) ||
934 jQuery.grep(this, function(a) {
935 return ( t.constructor == Array || t.jquery )
936 ? jQuery.inArray( a, t ) < 0
943 * Adds more elements, matched by the given expression,
944 * to the set of matched elements.
946 * @example $("p").add("span")
947 * @before <p>Hello</p><span>Hello Again</span>
948 * @result [ <p>Hello</p>, <span>Hello Again</span> ]
952 * @param String expr An expression whose matched elements are added
953 * @cat DOM/Traversing
957 * Adds more elements, created on the fly, to the set of
960 * @example $("p").add("<span>Again</span>")
961 * @before <p>Hello</p>
962 * @result [ <p>Hello</p>, <span>Again</span> ]
966 * @param String html A string of HTML to create on the fly.
967 * @cat DOM/Traversing
971 * Adds one or more Elements to the set of matched elements.
973 * @example $("p").add( document.getElementById("a") )
974 * @before <p>Hello</p><p><span id="a">Hello Again</span></p>
975 * @result [ <p>Hello</p>, <span id="a">Hello Again</span> ]
977 * @example $("p").add( document.forms[0].elements )
978 * @before <p>Hello</p><p><form><input/><button/></form>
979 * @result [ <p>Hello</p>, <input/>, <button/> ]
983 * @param Element|Array<Element> elements One or more Elements to add
984 * @cat DOM/Traversing
987 return this.pushStack( jQuery.merge(
989 t.constructor == String ?
991 t.length != undefined && (!t.nodeName || t.nodeName == "FORM") ?
997 * Checks the current selection against an expression and returns true,
998 * if at least one element of the selection fits the given expression.
1000 * Does return false, if no element fits or the expression is not valid.
1002 * filter(String) is used internally, therefore all rules that apply there
1005 * @example $("input[@type='checkbox']").parent().is("form")
1006 * @before <form><input type="checkbox" /></form>
1008 * @desc Returns true, because the parent of the input is a form element
1010 * @example $("input[@type='checkbox']").parent().is("form")
1011 * @before <form><p><input type="checkbox" /></p></form>
1013 * @desc Returns false, because the parent of the input is a p element
1017 * @param String expr The expression with which to filter
1018 * @cat DOM/Traversing
1020 is: function(expr) {
1021 return expr ? jQuery.filter(expr,this).r.length > 0 : false;
1025 * Get the current value of the first matched element.
1027 * @example $("input").val();
1028 * @before <input type="text" value="some text"/>
1029 * @result "some text"
1033 * @cat DOM/Attributes
1037 * Set the value of every matched element.
1039 * @example $("input").val("test");
1040 * @before <input type="text" value="some text"/>
1041 * @result <input type="text" value="test"/>
1045 * @param String val Set the property to the specified value.
1046 * @cat DOM/Attributes
1048 val: function( val ) {
1049 return val == undefined ?
1050 ( this.length ? this[0].value : null ) :
1051 this.attr( "value", val );
1055 * Get the html contents of the first matched element.
1056 * This property is not available on XML documents.
1058 * @example $("div").html();
1059 * @before <div><input/></div>
1064 * @cat DOM/Attributes
1068 * Set the html contents of every matched element.
1069 * This property is not available on XML documents.
1071 * @example $("div").html("<b>new stuff</b>");
1072 * @before <div><input/></div>
1073 * @result <div><b>new stuff</b></div>
1077 * @param String val Set the html contents to the specified value.
1078 * @cat DOM/Attributes
1080 html: function( val ) {
1081 return val == undefined ?
1082 ( this.length ? this[0].innerHTML : null ) :
1083 this.empty().append( val );
1090 * @param Boolean table Insert TBODY in TABLEs if one is not found.
1091 * @param Number dir If dir<0, process args in reverse order.
1092 * @param Function fn The function doing the DOM manipulation.
1096 domManip: function(args, table, dir, fn){
1097 var clone = this.length > 1;
1098 var a = jQuery.clean(args);
1102 return this.each(function(){
1105 if ( table && jQuery.nodeName(this, "table") && jQuery.nodeName(a[0], "tr") )
1106 obj = this.getElementsByTagName("tbody")[0] || this.appendChild(document.createElement("tbody"));
1108 jQuery.each( a, function(){
1109 fn.apply( obj, [ clone ? this.cloneNode(true) : this ] );
1117 * Extends the jQuery object itself. Can be used to add functions into
1118 * the jQuery namespace and to add plugin methods (plugins).
1120 * @example jQuery.fn.extend({
1121 * check: function() {
1122 * return this.each(function() { this.checked = true; });
1124 * uncheck: function() {
1125 * return this.each(function() { this.checked = false; });
1128 * $("input[@type=checkbox]").check();
1129 * $("input[@type=radio]").uncheck();
1130 * @desc Adds two plugin methods.
1132 * @example jQuery.extend({
1133 * min: function(a, b) { return a < b ? a : b; },
1134 * max: function(a, b) { return a > b ? a : b; }
1136 * @desc Adds two functions into the jQuery namespace
1139 * @param Object prop The object that will be merged into the jQuery object
1145 * Extend one object with one or more others, returning the original,
1146 * modified, object. This is a great utility for simple inheritance.
1148 * @example var settings = { validate: false, limit: 5, name: "foo" };
1149 * var options = { validate: true, name: "bar" };
1150 * jQuery.extend(settings, options);
1151 * @result settings == { validate: true, limit: 5, name: "bar" }
1152 * @desc Merge settings and options, modifying settings
1154 * @example var defaults = { validate: false, limit: 5, name: "foo" };
1155 * var options = { validate: true, name: "bar" };
1156 * var settings = jQuery.extend({}, defaults, options);
1157 * @result settings == { validate: true, limit: 5, name: "bar" }
1158 * @desc Merge defaults and options, without modifying the defaults
1161 * @param Object target The object to extend
1162 * @param Object prop1 The object that will be merged into the first.
1163 * @param Object propN (optional) More objects to merge into the first
1167 jQuery.extend = jQuery.fn.extend = function() {
1168 // copy reference to target object
1169 var target = arguments[0],
1172 // extend jQuery itself if only one argument is passed
1173 if ( arguments.length == 1 ) {
1178 while (prop = arguments[a++])
1179 // Extend the base object
1180 for ( var i in prop ) target[i] = prop[i];
1182 // Return the modified object
1188 * Run this function to give control of the $ variable back
1189 * to whichever library first implemented it. This helps to make
1190 * sure that jQuery doesn't conflict with the $ object
1191 * of other libraries.
1193 * By using this function, you will only be able to access jQuery
1194 * using the 'jQuery' variable. For example, where you used to do
1195 * $("div p"), you now must do jQuery("div p").
1197 * @example jQuery.noConflict();
1198 * // Do something with jQuery
1199 * jQuery("div p").hide();
1200 * // Do something with another library's $()
1201 * $("content").style.display = 'none';
1202 * @desc Maps the original object that was referenced by $ back to $
1204 * @example jQuery.noConflict();
1207 * // more code using $ as alias to jQuery
1210 * // other code using $ as an alias to the other library
1211 * @desc Reverts the $ alias and then creates and executes a
1212 * function to provide the $ as a jQuery alias inside the functions
1213 * scope. Inside the function the original $ object is not available.
1214 * This works well for most plugins that don't rely on any other library.
1217 * @name $.noConflict
1221 noConflict: function() {
1227 // This may seem like some crazy code, but trust me when I say that this
1228 // is the only cross-browser way to do this. --John
1229 isFunction: function( fn ) {
1230 return !!fn && typeof fn != "string" && !fn.nodeName &&
1231 typeof fn[0] == "undefined" && /function/i.test( fn + "" );
1234 // check if an element is in a XML document
1235 isXMLDoc: function(elem) {
1236 return elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
1239 nodeName: function( elem, name ) {
1240 return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
1244 * A generic iterator function, which can be used to seemlessly
1245 * iterate over both objects and arrays. This function is not the same
1246 * as $().each() - which is used to iterate, exclusively, over a jQuery
1247 * object. This function can be used to iterate over anything.
1249 * The callback has two arguments:the key (objects) or index (arrays) as first
1250 * the first, and the value as the second.
1252 * @example $.each( [0,1,2], function(i, n){
1253 * alert( "Item #" + i + ": " + n );
1255 * @desc This is an example of iterating over the items in an array,
1256 * accessing both the current item and its index.
1258 * @example $.each( { name: "John", lang: "JS" }, function(i, n){
1259 * alert( "Name: " + i + ", Value: " + n );
1262 * @desc This is an example of iterating over the properties in an
1263 * Object, accessing both the current item and its key.
1266 * @param Object obj The object, or array, to iterate over.
1267 * @param Function fn The function that will be executed on every object.
1271 // args is for internal usage only
1272 each: function( obj, fn, args ) {
1273 if ( obj.length == undefined )
1274 for ( var i in obj )
1275 fn.apply( obj[i], args || [i, obj[i]] );
1277 for ( var i = 0, ol = obj.length; i < ol; i++ )
1278 if ( fn.apply( obj[i], args || [i, obj[i]] ) === false ) break;
1282 prop: function(elem, value, type, index, prop){
1283 // Handle executable functions
1284 if ( jQuery.isFunction( value ) )
1285 value = value.call( elem, [index] );
1287 // exclude the following css properties to add px
1288 var exclude = /z-?index|font-?weight|opacity|zoom|line-?height/i;
1290 // Handle passing in a number to a CSS property
1291 return value && value.constructor == Number && type == "curCSS" && !exclude.test(prop) ?
1297 // internal only, use addClass("class")
1298 add: function( elem, c ){
1299 jQuery.each( c.split(/\s+/), function(i, cur){
1300 if ( !jQuery.className.has( elem.className, cur ) )
1301 elem.className += ( elem.className ? " " : "" ) + cur;
1305 // internal only, use removeClass("class")
1306 remove: function( elem, c ){
1307 elem.className = c ?
1308 jQuery.grep( elem.className.split(/\s+/), function(cur){
1309 return !jQuery.className.has( c, cur );
1313 // internal only, use is(".class")
1314 has: function( t, c ) {
1315 t = t.className || t;
1316 // escape regex characters
1317 c = c.replace(/([\.\\\+\*\?\[\^\]\$\(\)\{\}\=\!\<\>\|\:])/g, "\\$1");
1318 return t && new RegExp("(^|\\s)" + c + "(\\s|$)").test( t );
1323 * Swap in/out style options.
1326 swap: function(e,o,f) {
1327 for ( var i in o ) {
1328 e.style["old"+i] = e.style[i];
1333 e.style[i] = e.style["old"+i];
1336 css: function(e,p) {
1337 if ( p == "height" || p == "width" ) {
1338 var old = {}, oHeight, oWidth, d = ["Top","Bottom","Right","Left"];
1340 jQuery.each( d, function(){
1341 old["padding" + this] = 0;
1342 old["border" + this + "Width"] = 0;
1345 jQuery.swap( e, old, function() {
1346 if (jQuery.css(e,"display") != "none") {
1347 oHeight = e.offsetHeight;
1348 oWidth = e.offsetWidth;
1350 e = jQuery(e.cloneNode(true))
1351 .find(":radio").removeAttr("checked").end()
1353 visibility: "hidden", position: "absolute", display: "block", right: "0", left: "0"
1354 }).appendTo(e.parentNode)[0];
1356 var parPos = jQuery.css(e.parentNode,"position");
1357 if ( parPos == "" || parPos == "static" )
1358 e.parentNode.style.position = "relative";
1360 oHeight = e.clientHeight;
1361 oWidth = e.clientWidth;
1363 if ( parPos == "" || parPos == "static" )
1364 e.parentNode.style.position = "static";
1366 e.parentNode.removeChild(e);
1370 return p == "height" ? oHeight : oWidth;
1373 return jQuery.curCSS( e, p );
1376 curCSS: function(elem, prop, force) {
1379 if (prop == "opacity" && jQuery.browser.msie)
1380 return jQuery.attr(elem.style, "opacity");
1382 if (prop == "float" || prop == "cssFloat")
1383 prop = jQuery.browser.msie ? "styleFloat" : "cssFloat";
1385 if (!force && elem.style[prop])
1386 ret = elem.style[prop];
1388 else if (document.defaultView && document.defaultView.getComputedStyle) {
1390 if (prop == "cssFloat" || prop == "styleFloat")
1393 prop = prop.replace(/([A-Z])/g,"-$1").toLowerCase();
1394 var cur = document.defaultView.getComputedStyle(elem, null);
1397 ret = cur.getPropertyValue(prop);
1398 else if ( prop == "display" )
1401 jQuery.swap(elem, { display: "block" }, function() {
1402 var c = document.defaultView.getComputedStyle(this, "");
1403 ret = c && c.getPropertyValue(prop) || "";
1406 } else if (elem.currentStyle) {
1408 var newProp = prop.replace(/\-(\w)/g,function(m,c){return c.toUpperCase();});
1409 ret = elem.currentStyle[prop] || elem.currentStyle[newProp];
1416 clean: function(a) {
1419 jQuery.each( a, function(i,arg){
1422 if ( arg.constructor == Number )
1423 arg = arg.toString();
1425 // Convert html string into DOM nodes
1426 if ( typeof arg == "string" ) {
1427 // Trim whitespace, otherwise indexOf won't work as expected
1428 var s = jQuery.trim(arg), div = document.createElement("div"), tb = [];
1431 // option or optgroup
1432 !s.indexOf("<opt") &&
1433 [1, "<select>", "</select>"] ||
1435 (!s.indexOf("<thead") || !s.indexOf("<tbody") || !s.indexOf("<tfoot")) &&
1436 [1, "<table>", "</table>"] ||
1438 !s.indexOf("<tr") &&
1439 [2, "<table><tbody>", "</tbody></table>"] ||
1441 // <thead> matched above
1442 (!s.indexOf("<td") || !s.indexOf("<th")) &&
1443 [3, "<table><tbody><tr>", "</tr></tbody></table>"] ||
1447 // Go to html and back, then peel off extra wrappers
1448 div.innerHTML = wrap[1] + s + wrap[2];
1450 // Move to the right depth
1452 div = div.firstChild;
1454 // Remove IE's autoinserted <tbody> from table fragments
1455 if ( jQuery.browser.msie ) {
1457 // String was a <table>, *may* have spurious <tbody>
1458 if ( !s.indexOf("<table") && s.indexOf("<tbody") < 0 )
1459 tb = div.firstChild && div.firstChild.childNodes;
1461 // String was a bare <thead> or <tfoot>
1462 else if ( wrap[1] == "<table>" && s.indexOf("<tbody") < 0 )
1463 tb = div.childNodes;
1465 for ( var n = tb.length-1; n >= 0 ; --n )
1466 if ( jQuery.nodeName(tb[n], "tbody") && !tb[n].childNodes.length )
1467 tb[n].parentNode.removeChild(tb[n]);
1471 arg = div.childNodes;
1474 if ( arg.length === 0 && !jQuery.nodeName(arg, "form") )
1477 if ( arg[0] == undefined || jQuery.nodeName(arg, "form") )
1480 r = jQuery.merge( r, arg );
1487 attr: function(elem, name, value){
1488 var fix = jQuery.isXMLDoc(elem) ? {} : {
1490 "class": "className",
1491 "float": jQuery.browser.msie ? "styleFloat" : "cssFloat",
1492 cssFloat: jQuery.browser.msie ? "styleFloat" : "cssFloat",
1493 innerHTML: "innerHTML",
1494 className: "className",
1496 disabled: "disabled",
1498 readonly: "readOnly",
1499 selected: "selected"
1502 // IE actually uses filters for opacity ... elem is actually elem.style
1503 if ( name == "opacity" && jQuery.browser.msie && value != undefined ) {
1504 // IE has trouble with opacity if it does not have layout
1505 // Force it by setting the zoom level
1508 // Set the alpha filter to set the opacity
1509 return elem.filter = elem.filter.replace(/alpha\([^\)]*\)/gi,"") +
1510 ( value == 1 ? "" : "alpha(opacity=" + value * 100 + ")" );
1512 } else if ( name == "opacity" && jQuery.browser.msie )
1513 return elem.filter ?
1514 parseFloat( elem.filter.match(/alpha\(opacity=(.*)\)/)[1] ) / 100 : 1;
1516 // Mozilla doesn't play well with opacity 1
1517 if ( name == "opacity" && jQuery.browser.mozilla && value == 1 )
1521 // Certain attributes only work when accessed via the old DOM 0 way
1523 if ( value != undefined ) elem[fix[name]] = value;
1524 return elem[fix[name]];
1526 } else if ( value == undefined && jQuery.browser.msie && jQuery.nodeName(elem, "form") && (name == "action" || name == "method") )
1527 return elem.getAttributeNode(name).nodeValue;
1529 // IE elem.getAttribute passes even for style
1530 else if ( elem.tagName ) {
1531 if ( value != undefined ) elem.setAttribute( name, value );
1532 if ( jQuery.browser.msie && /href|src/.test(name) && !jQuery.isXMLDoc(elem) )
1533 return elem.getAttribute( name, 2 );
1534 return elem.getAttribute( name );
1536 // elem is actually elem.style ... set the style
1538 name = name.replace(/-([a-z])/ig,function(z,b){return b.toUpperCase();});
1539 if ( value != undefined ) elem[name] = value;
1545 * Remove the whitespace from the beginning and end of a string.
1547 * @example $.trim(" hello, how are you? ");
1548 * @result "hello, how are you?"
1552 * @param String str The string to trim.
1556 return t.replace(/^\s+|\s+$/g, "");
1559 makeArray: function( a ) {
1562 if ( a.constructor != Array )
1563 for ( var i = 0, al = a.length; i < al; i++ )
1571 inArray: function( b, a ) {
1572 for ( var i = 0, al = a.length; i < al; i++ )
1579 * Merge two arrays together, removing all duplicates.
1581 * The result is the altered first argument with
1582 * the unique elements from the second array added.
1584 * @example $.merge( [0,1,2], [2,3,4] )
1585 * @result [0,1,2,3,4]
1586 * @desc Merges two arrays, removing the duplicate 2
1588 * @example var array = [3,2,1];
1589 * $.merge( array, [4,3,2] )
1590 * @result array == [3,2,1,4]
1591 * @desc Merges two arrays, removing the duplicates 3 and 2
1595 * @param Array first The first array to merge, the unique elements of second added.
1596 * @param Array second The second array to merge into the first, unaltered.
1599 merge: function(first, second) {
1600 var r = [].slice.call( first, 0 );
1602 // Now check for duplicates between the two arrays
1603 // and only add the unique items
1604 for ( var i = 0, sl = second.length; i < sl; i++ )
1605 // Check for duplicates
1606 if ( jQuery.inArray( second[i], r ) == -1 )
1607 // The item is unique, add it
1608 first.push( second[i] );
1614 * Filter items out of an array, by using a filter function.
1616 * The specified function will be passed two arguments: The
1617 * current array item and the index of the item in the array. The
1618 * function must return 'true' to keep the item in the array,
1619 * false to remove it.
1621 * @example $.grep( [0,1,2], function(i){
1628 * @param Array array The Array to find items in.
1629 * @param Function fn The function to process each item against.
1630 * @param Boolean inv Invert the selection - select the opposite of the function.
1633 grep: function(elems, fn, inv) {
1634 // If a string is passed in for the function, make a function
1635 // for it (a handy shortcut)
1636 if ( typeof fn == "string" )
1637 fn = new Function("a","i","return " + fn);
1641 // Go through the array, only saving the items
1642 // that pass the validator function
1643 for ( var i = 0, el = elems.length; i < el; i++ )
1644 if ( !inv && fn(elems[i],i) || inv && !fn(elems[i],i) )
1645 result.push( elems[i] );
1651 * Translate all items in an array to another array of items.
1653 * The translation function that is provided to this method is
1654 * called for each item in the array and is passed one argument:
1655 * The item to be translated.
1657 * The function can then return the translated value, 'null'
1658 * (to remove the item), or an array of values - which will
1659 * be flattened into the full array.
1661 * @example $.map( [0,1,2], function(i){
1665 * @desc Maps the original array to a new one and adds 4 to each value.
1667 * @example $.map( [0,1,2], function(i){
1668 * return i > 0 ? i + 1 : null;
1671 * @desc Maps the original array to a new one and adds 1 to each
1672 * value if it is bigger then zero, otherwise it's removed-
1674 * @example $.map( [0,1,2], function(i){
1675 * return [ i, i + 1 ];
1677 * @result [0, 1, 1, 2, 2, 3]
1678 * @desc Maps the original array to a new one, each element is added
1679 * with it's original value and the value plus one.
1683 * @param Array array The Array to translate.
1684 * @param Function fn The function to process each item against.
1687 map: function(elems, fn) {
1688 // If a string is passed in for the function, make a function
1689 // for it (a handy shortcut)
1690 if ( typeof fn == "string" )
1691 fn = new Function("a","return " + fn);
1693 var result = [], r = [];
1695 // Go through the array, translating each of the items to their
1696 // new value (or values).
1697 for ( var i = 0, el = elems.length; i < el; i++ ) {
1698 var val = fn(elems[i],i);
1700 if ( val !== null && val != undefined ) {
1701 if ( val.constructor != Array ) val = [val];
1702 result = result.concat( val );
1706 var r = result.length ? [ result[0] ] : [];
1708 check: for ( var i = 1, rl = result.length; i < rl; i++ ) {
1709 for ( var j = 0; j < i; j++ )
1710 if ( result[i] == r[j] )
1713 r.push( result[i] );
1721 * Contains flags for the useragent, read from navigator.userAgent.
1722 * Available flags are: safari, opera, msie, mozilla
1724 * This property is available before the DOM is ready, therefore you can
1725 * use it to add ready events only for certain browsers.
1727 * There are situations where object detections is not reliable enough, in that
1728 * cases it makes sense to use browser detection. Simply try to avoid both!
1730 * A combination of browser and object detection yields quite reliable results.
1732 * @example $.browser.msie
1733 * @desc Returns true if the current useragent is some version of microsoft's internet explorer
1735 * @example if($.browser.safari) { $( function() { alert("this is safari!"); } ); }
1736 * @desc Alerts "this is safari!" only for safari browsers
1745 * Whether the W3C compliant box model is being used.
1753 var b = navigator.userAgent.toLowerCase();
1755 // Figure out what browser is being used
1757 safari: /webkit/.test(b),
1758 opera: /opera/.test(b),
1759 msie: /msie/.test(b) && !/opera/.test(b),
1760 mozilla: /mozilla/.test(b) && !/(compatible|webkit)/.test(b)
1763 // Check to see if the W3C box model is being used
1764 jQuery.boxModel = !jQuery.browser.msie || document.compatMode == "CSS1Compat";
1768 * Get a set of elements containing the unique parents of the matched
1771 * Can be filtered with an optional expressions.
1773 * @example $("p").parent()
1774 * @before <div><p>Hello</p><p>Hello</p></div>
1775 * @result [ <div><p>Hello</p><p>Hello</p></div> ]
1776 * @desc Find the parent element of each paragraph.
1778 * @example $("p").parent(".selected")
1779 * @before <div><p>Hello</p></div><div class="selected"><p>Hello Again</p></div>
1780 * @result [ <div class="selected"><p>Hello Again</p></div> ]
1781 * @desc Find the parent element of each paragraph with a class "selected".
1785 * @param String expr (optional) An expression to filter the parents with
1786 * @cat DOM/Traversing
1790 * Get a set of elements containing the unique ancestors of the matched
1791 * set of elements (except for the root element).
1793 * Can be filtered with an optional expressions.
1795 * @example $("span").parents()
1796 * @before <html><body><div><p><span>Hello</span></p><span>Hello Again</span></div></body></html>
1797 * @result [ <body>...</body>, <div>...</div>, <p><span>Hello</span></p> ]
1798 * @desc Find all parent elements of each span.
1800 * @example $("span").parents("p")
1801 * @before <html><body><div><p><span>Hello</span></p><span>Hello Again</span></div></body></html>
1802 * @result [ <p><span>Hello</span></p> ]
1803 * @desc Find all parent elements of each span that is a paragraph.
1807 * @param String expr (optional) An expression to filter the ancestors with
1808 * @cat DOM/Traversing
1812 * Get a set of elements containing the unique next siblings of each of the
1813 * matched set of elements.
1815 * It only returns the very next sibling, not all next siblings.
1817 * Can be filtered with an optional expressions.
1819 * @example $("p").next()
1820 * @before <p>Hello</p><p>Hello Again</p><div><span>And Again</span></div>
1821 * @result [ <p>Hello Again</p>, <div><span>And Again</span></div> ]
1822 * @desc Find the very next sibling of each paragraph.
1824 * @example $("p").next(".selected")
1825 * @before <p>Hello</p><p class="selected">Hello Again</p><div><span>And Again</span></div>
1826 * @result [ <p class="selected">Hello Again</p> ]
1827 * @desc Find the very next sibling of each paragraph that has a class "selected".
1831 * @param String expr (optional) An expression to filter the next Elements with
1832 * @cat DOM/Traversing
1836 * Get a set of elements containing the unique previous siblings of each of the
1837 * matched set of elements.
1839 * Can be filtered with an optional expressions.
1841 * It only returns the immediately previous sibling, not all previous siblings.
1843 * @example $("p").prev()
1844 * @before <p>Hello</p><div><span>Hello Again</span></div><p>And Again</p>
1845 * @result [ <div><span>Hello Again</span></div> ]
1846 * @desc Find the very previous sibling of each paragraph.
1848 * @example $("p").prev(".selected")
1849 * @before <div><span>Hello</span></div><p class="selected">Hello Again</p><p>And Again</p>
1850 * @result [ <div><span>Hello</span></div> ]
1851 * @desc Find the very previous sibling of each paragraph that has a class "selected".
1855 * @param String expr (optional) An expression to filter the previous Elements with
1856 * @cat DOM/Traversing
1860 * Get a set of elements containing all of the unique siblings of each of the
1861 * matched set of elements.
1863 * Can be filtered with an optional expressions.
1865 * @example $("div").siblings()
1866 * @before <p>Hello</p><div><span>Hello Again</span></div><p>And Again</p>
1867 * @result [ <p>Hello</p>, <p>And Again</p> ]
1868 * @desc Find all siblings of each div.
1870 * @example $("div").siblings(".selected")
1871 * @before <div><span>Hello</span></div><p class="selected">Hello Again</p><p>And Again</p>
1872 * @result [ <p class="selected">Hello Again</p> ]
1873 * @desc Find all siblings with a class "selected" of each div.
1877 * @param String expr (optional) An expression to filter the sibling Elements with
1878 * @cat DOM/Traversing
1882 * Get a set of elements containing all of the unique children of each of the
1883 * matched set of elements.
1885 * Can be filtered with an optional expressions.
1887 * @example $("div").children()
1888 * @before <p>Hello</p><div><span>Hello Again</span></div><p>And Again</p>
1889 * @result [ <span>Hello Again</span> ]
1890 * @desc Find all children of each div.
1892 * @example $("div").children(".selected")
1893 * @before <div><span>Hello</span><p class="selected">Hello Again</p><p>And Again</p></div>
1894 * @result [ <p class="selected">Hello Again</p> ]
1895 * @desc Find all children with a class "selected" of each div.
1899 * @param String expr (optional) An expression to filter the child Elements with
1900 * @cat DOM/Traversing
1903 parent: "a.parentNode",
1904 parents: "jQuery.parents(a)",
1905 next: "jQuery.nth(a,2,'nextSibling')",
1906 prev: "jQuery.nth(a,2,'previousSibling')",
1907 siblings: "jQuery.sibling(a.parentNode.firstChild,a)",
1908 children: "jQuery.sibling(a.firstChild)"
1910 jQuery.fn[ i ] = function(a) {
1911 var ret = jQuery.map(this,n);
1912 if ( a && typeof a == "string" )
1913 ret = jQuery.multiFilter(a,ret);
1914 return this.pushStack( ret );
1919 * Append all of the matched elements to another, specified, set of elements.
1920 * This operation is, essentially, the reverse of doing a regular
1921 * $(A).append(B), in that instead of appending B to A, you're appending
1924 * @example $("p").appendTo("#foo");
1925 * @before <p>I would like to say: </p><div id="foo"></div>
1926 * @result <div id="foo"><p>I would like to say: </p></div>
1927 * @desc Appends all paragraphs to the element with the ID "foo"
1931 * @param <Content> content Content to append to the selected element to.
1932 * @cat DOM/Manipulation
1933 * @see append(<Content>)
1937 * Prepend all of the matched elements to another, specified, set of elements.
1938 * This operation is, essentially, the reverse of doing a regular
1939 * $(A).prepend(B), in that instead of prepending B to A, you're prepending
1942 * @example $("p").prependTo("#foo");
1943 * @before <p>I would like to say: </p><div id="foo"><b>Hello</b></div>
1944 * @result <div id="foo"><p>I would like to say: </p><b>Hello</b></div>
1945 * @desc Prepends all paragraphs to the element with the ID "foo"
1949 * @param <Content> content Content to prepend to the selected element to.
1950 * @cat DOM/Manipulation
1951 * @see prepend(<Content>)
1955 * Insert all of the matched elements before another, specified, set of elements.
1956 * This operation is, essentially, the reverse of doing a regular
1957 * $(A).before(B), in that instead of inserting B before A, you're inserting
1960 * @example $("p").insertBefore("#foo");
1961 * @before <div id="foo">Hello</div><p>I would like to say: </p>
1962 * @result <p>I would like to say: </p><div id="foo">Hello</div>
1963 * @desc Same as $("#foo").before("p")
1965 * @name insertBefore
1967 * @param <Content> content Content to insert the selected element before.
1968 * @cat DOM/Manipulation
1969 * @see before(<Content>)
1973 * Insert all of the matched elements after another, specified, set of elements.
1974 * This operation is, essentially, the reverse of doing a regular
1975 * $(A).after(B), in that instead of inserting B after A, you're inserting
1978 * @example $("p").insertAfter("#foo");
1979 * @before <p>I would like to say: </p><div id="foo">Hello</div>
1980 * @result <div id="foo">Hello</div><p>I would like to say: </p>
1981 * @desc Same as $("#foo").after("p")
1985 * @param <Content> content Content to insert the selected element after.
1986 * @cat DOM/Manipulation
1987 * @see after(<Content>)
1992 prependTo: "prepend",
1993 insertBefore: "before",
1994 insertAfter: "after"
1996 jQuery.fn[ i ] = function(){
1998 return this.each(function(){
1999 for ( var j = 0, al = a.length; j < al; j++ )
2000 jQuery(a[j])[n]( this );
2006 * Remove an attribute from each of the matched elements.
2008 * @example $("input").removeAttr("disabled")
2009 * @before <input disabled="disabled"/>
2014 * @param String name The name of the attribute to remove.
2015 * @cat DOM/Attributes
2019 * Adds the specified class(es) to each of the set of matched elements.
2021 * @example $("p").addClass("selected")
2022 * @before <p>Hello</p>
2023 * @result [ <p class="selected">Hello</p> ]
2025 * @example $("p").addClass("selected highlight")
2026 * @before <p>Hello</p>
2027 * @result [ <p class="selected highlight">Hello</p> ]
2031 * @param String class One or more CSS classes to add to the elements
2032 * @cat DOM/Attributes
2033 * @see removeClass(String)
2037 * Removes all or the specified class(es) from the set of matched elements.
2039 * @example $("p").removeClass()
2040 * @before <p class="selected">Hello</p>
2041 * @result [ <p>Hello</p> ]
2043 * @example $("p").removeClass("selected")
2044 * @before <p class="selected first">Hello</p>
2045 * @result [ <p class="first">Hello</p> ]
2047 * @example $("p").removeClass("selected highlight")
2048 * @before <p class="highlight selected first">Hello</p>
2049 * @result [ <p class="first">Hello</p> ]
2053 * @param String class (optional) One or more CSS classes to remove from the elements
2054 * @cat DOM/Attributes
2055 * @see addClass(String)
2059 * Adds the specified class if it is not present, removes it if it is
2062 * @example $("p").toggleClass("selected")
2063 * @before <p>Hello</p><p class="selected">Hello Again</p>
2064 * @result [ <p class="selected">Hello</p>, <p>Hello Again</p> ]
2068 * @param String class A CSS class with which to toggle the elements
2069 * @cat DOM/Attributes
2073 * Removes all matched elements from the DOM. This does NOT remove them from the
2074 * jQuery object, allowing you to use the matched elements further.
2076 * Can be filtered with an optional expressions.
2078 * @example $("p").remove();
2079 * @before <p>Hello</p> how are <p>you?</p>
2082 * @example $("p").remove(".hello");
2083 * @before <p class="hello">Hello</p> how are <p>you?</p>
2084 * @result how are <p>you?</p>
2088 * @param String expr (optional) A jQuery expression to filter elements by.
2089 * @cat DOM/Manipulation
2093 * Removes all child nodes from the set of matched elements.
2095 * @example $("p").empty()
2096 * @before <p>Hello, <span>Person</span> <a href="#">and person</a></p>
2097 * @result [ <p></p> ]
2101 * @cat DOM/Manipulation
2105 removeAttr: function( key ) {
2106 jQuery.attr( this, key, "" );
2107 this.removeAttribute( key );
2109 addClass: function(c){
2110 jQuery.className.add(this,c);
2112 removeClass: function(c){
2113 jQuery.className.remove(this,c);
2115 toggleClass: function( c ){
2116 jQuery.className[ jQuery.className.has(this,c) ? "remove" : "add" ](this, c);
2118 remove: function(a){
2119 if ( !a || jQuery.filter( a, [this] ).r.length )
2120 this.parentNode.removeChild( this );
2123 while ( this.firstChild )
2124 this.removeChild( this.firstChild );
2127 jQuery.fn[ i ] = function() {
2128 return this.each( n, arguments );
2133 * Reduce the set of matched elements to a single element.
2134 * The position of the element in the set of matched elements
2135 * starts at 0 and goes to length - 1.
2137 * @example $("p").eq(1)
2138 * @before <p>This is just a test.</p><p>So is this</p>
2139 * @result [ <p>So is this</p> ]
2143 * @param Number pos The index of the element that you wish to limit to.
2148 * Reduce the set of matched elements to all elements before a given position.
2149 * The position of the element in the set of matched elements
2150 * starts at 0 and goes to length - 1.
2152 * @example $("p").lt(1)
2153 * @before <p>This is just a test.</p><p>So is this</p>
2154 * @result [ <p>This is just a test.</p> ]
2158 * @param Number pos Reduce the set to all elements below this position.
2163 * Reduce the set of matched elements to all elements after a given position.
2164 * The position of the element in the set of matched elements
2165 * starts at 0 and goes to length - 1.
2167 * @example $("p").gt(0)
2168 * @before <p>This is just a test.</p><p>So is this</p>
2169 * @result [ <p>So is this</p> ]
2173 * @param Number pos Reduce the set to all elements after this position.
2178 * Filter the set of elements to those that contain the specified text.
2180 * @example $("p").contains("test")
2181 * @before <p>This is just a test.</p><p>So is this</p>
2182 * @result [ <p>This is just a test.</p> ]
2186 * @param String str The string that will be contained within the text of an element.
2187 * @cat DOM/Traversing
2189 jQuery.each( [ "eq", "lt", "gt", "contains" ], function(i,n){
2190 jQuery.fn[ n ] = function(num,fn) {
2191 return this.filter( ":" + n + "(" + num + ")", fn );
2196 * Get the current computed, pixel, width of the first matched element.
2198 * @example $("p").width();
2199 * @before <p>This is just a test.</p>
2208 * Set the CSS width of every matched element. If no explicit unit
2209 * was specified (like 'em' or '%') then "px" is added to the width.
2211 * @example $("p").width(20);
2212 * @before <p>This is just a test.</p>
2213 * @result <p style="width:20px;">This is just a test.</p>
2215 * @example $("p").width("20em");
2216 * @before <p>This is just a test.</p>
2217 * @result <p style="width:20em;">This is just a test.</p>
2221 * @param String|Number val Set the CSS property to the specified value.
2226 * Get the current computed, pixel, height of the first matched element.
2228 * @example $("p").height();
2229 * @before <p>This is just a test.</p>
2238 * Set the CSS width of every matched element. If no explicit unit
2239 * was specified (like 'em' or '%') then "px" is added to the width.
2241 * @example $("p").height(20);
2242 * @before <p>This is just a test.</p>
2243 * @result <p style="height:20px;">This is just a test.</p>
2245 * @example $("p").height("20em");
2246 * @before <p>This is just a test.</p>
2247 * @result <p style="height:20em;">This is just a test.</p>
2251 * @param String|Number val Set the CSS property to the specified value.
2255 jQuery.each( [ "height", "width" ], function(i,n){
2256 jQuery.fn[ n ] = function(h) {
2257 return h == undefined ?
2258 ( this.length ? jQuery.css( this[0], n ) : null ) :
2259 this.css( n, h.constructor == String ? h : h + "px" );