1 var jQuery = (function() {
3 // Define a local copy of jQuery
4 var jQuery = function( selector, context ) {
5 // The jQuery object is actually just the init constructor 'enhanced'
6 return new jQuery.fn.init( selector, context );
9 // Map over jQuery in case of overwrite
10 _jQuery = window.jQuery,
12 // Map over the $ in case of overwrite
15 // A central reference to the root jQuery(document)
18 // A simple way to check for HTML strings or ID strings
19 // (both of which we optimize for)
20 quickExpr = /^(?:[^<]*(<[\w\W]+>)[^>]*$|#([\w\-]+)$)/,
22 // Is it a simple selector
23 isSimple = /^.[^:#\[\.,]*$/,
25 // Check if a string has a non-whitespace character in it
29 // Used for trimming whitespace
33 // Check for non-word characters
39 // Match a standalone tag
40 rsingleTag = /^<(\w+)\s*\/?>(?:<\/\1>)?$/,
43 rvalidchars = /^[\],:{}\s]*$/,
44 rvalidescape = /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g,
45 rvalidtokens = /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g,
46 rvalidbraces = /(?:^|:|,)(?:\s*\[)+/g,
49 rwebkit = /(webkit)[ \/]([\w.]+)/,
50 ropera = /(opera)(?:.*version)?[ \/]([\w.]+)/,
51 rmsie = /(msie) ([\w.]+)/,
52 rmozilla = /(mozilla)(?:.*? rv:([\w.]+))?/,
54 // Keep a UserAgent string for use with jQuery.browser
55 userAgent = navigator.userAgent,
57 // For matching the engine and version of the browser
60 // Has the ready events already been bound?
63 // The functions to execute on DOM ready
66 // The ready event handler
69 // Save a reference to some core methods
70 toString = Object.prototype.toString,
71 hasOwn = Object.prototype.hasOwnProperty,
72 push = Array.prototype.push,
73 slice = Array.prototype.slice,
74 trim = String.prototype.trim,
75 indexOf = Array.prototype.indexOf,
77 // [[Class]] -> type pairs
80 jQuery.fn = jQuery.prototype = {
81 init: function( selector, context ) {
82 var match, elem, ret, doc;
84 // Handle $(""), $(null), or $(undefined)
89 // Handle $(DOMElement)
90 if ( selector.nodeType ) {
91 this.context = this[0] = selector;
96 // The body element only exists once, optimize finding it
97 if ( selector === "body" && !context && document.body ) {
98 this.context = document;
99 this[0] = document.body;
100 this.selector = "body";
105 // Handle HTML strings
106 if ( typeof selector === "string" ) {
107 // Are we dealing with HTML string or an ID?
108 match = quickExpr.exec( selector );
110 // Verify a match, and that no context was specified for #id
111 if ( match && (match[1] || !context) ) {
113 // HANDLE: $(html) -> $(array)
115 doc = (context ? context.ownerDocument || context : document);
117 // If a single string is passed in and it's a single tag
118 // just do a createElement and skip the rest
119 ret = rsingleTag.exec( selector );
122 if ( jQuery.isPlainObject( context ) ) {
123 selector = [ document.createElement( ret[1] ) ];
124 jQuery.fn.attr.call( selector, context, true );
127 selector = [ doc.createElement( ret[1] ) ];
131 ret = jQuery.buildFragment( [ match[1] ], [ doc ] );
132 selector = (ret.cacheable ? ret.fragment.cloneNode(true) : ret.fragment).childNodes;
135 return jQuery.merge( this, selector );
139 elem = document.getElementById( match[2] );
141 // Check parentNode to catch when Blackberry 4.6 returns
142 // nodes that are no longer in the document #6963
143 if ( elem && elem.parentNode ) {
144 // Handle the case where IE and Opera return items
145 // by name instead of ID
146 if ( elem.id !== match[2] ) {
147 return rootjQuery.find( selector );
150 // Otherwise, we inject the element directly into the jQuery object
155 this.context = document;
156 this.selector = selector;
161 } else if ( !context && !rnonword.test( selector ) ) {
162 this.selector = selector;
163 this.context = document;
164 selector = document.getElementsByTagName( selector );
165 return jQuery.merge( this, selector );
167 // HANDLE: $(expr, $(...))
168 } else if ( !context || context.jquery ) {
169 return (context || rootjQuery).find( selector );
171 // HANDLE: $(expr, context)
172 // (which is just equivalent to: $(context).find(expr)
174 return jQuery( context ).find( selector );
177 // HANDLE: $(function)
178 // Shortcut for document ready
179 } else if ( jQuery.isFunction( selector ) ) {
180 return rootjQuery.ready( selector );
183 if (selector.selector !== undefined) {
184 this.selector = selector.selector;
185 this.context = selector.context;
188 return jQuery.makeArray( selector, this );
191 // Start with an empty selector
194 // The current version of jQuery being used
197 // The default length of a jQuery object is 0
200 // The number of elements contained in the matched element set
205 toArray: function() {
206 return slice.call( this, 0 );
209 // Get the Nth element in the matched element set OR
210 // Get the whole matched element set as a clean array
211 get: function( num ) {
214 // Return a 'clean' array
217 // Return just the object
218 ( num < 0 ? this[ this.length + num ] : this[ num ] );
221 // Take an array of elements and push it onto the stack
222 // (returning the new matched element set)
223 pushStack: function( elems, name, selector ) {
224 // Build a new jQuery matched element set
227 if ( jQuery.isArray( elems ) ) {
228 push.apply( ret, elems );
231 jQuery.merge( ret, elems );
234 // Add the old object onto the stack (as a reference)
235 ret.prevObject = this;
237 ret.context = this.context;
239 if ( name === "find" ) {
240 ret.selector = this.selector + (this.selector ? " " : "") + selector;
242 ret.selector = this.selector + "." + name + "(" + selector + ")";
245 // Return the newly-formed element set
249 // Execute a callback for every element in the matched set.
250 // (You can seed the arguments with an array of args, but this is
251 // only used internally.)
252 each: function( callback, args ) {
253 return jQuery.each( this, callback, args );
256 ready: function( fn ) {
257 // Attach the listeners
260 // If the DOM is already ready
261 if ( jQuery.isReady ) {
262 // Execute the function immediately
263 fn.call( document, jQuery );
265 // Otherwise, remember the function for later
266 } else if ( readyList ) {
267 // Add the function to the wait list
268 readyList.push( fn );
277 this.slice( i, +i + 1 );
285 return this.eq( -1 );
289 return this.pushStack( slice.apply( this, arguments ),
290 "slice", slice.call(arguments).join(",") );
293 map: function( callback ) {
294 return this.pushStack( jQuery.map(this, function( elem, i ) {
295 return callback.call( elem, i, elem );
300 return this.prevObject || jQuery(null);
303 // For internal use only.
304 // Behaves like an Array's method, not like a jQuery method.
310 // Give the init function the jQuery prototype for later instantiation
311 jQuery.fn.init.prototype = jQuery.fn;
313 jQuery.extend = jQuery.fn.extend = function() {
314 var options, name, src, copy, copyIsArray, clone,
315 target = arguments[0] || {},
317 length = arguments.length,
320 // Handle a deep copy situation
321 if ( typeof target === "boolean" ) {
323 target = arguments[1] || {};
324 // skip the boolean and the target
328 // Handle case when target is a string or something (possible in deep copy)
329 if ( typeof target !== "object" && !jQuery.isFunction(target) ) {
333 // extend jQuery itself if only one argument is passed
334 if ( length === i ) {
339 for ( ; i < length; i++ ) {
340 // Only deal with non-null/undefined values
341 if ( (options = arguments[ i ]) != null ) {
342 // Extend the base object
343 for ( name in options ) {
344 src = target[ name ];
345 copy = options[ name ];
347 // Prevent never-ending loop
348 if ( target === copy ) {
352 // Recurse if we're merging plain objects or arrays
353 if ( deep && copy && ( jQuery.isPlainObject(copy) || (copyIsArray = jQuery.isArray(copy)) ) ) {
356 clone = src && jQuery.isArray(src) ? src : [];
359 clone = src && jQuery.isPlainObject(src) ? src : {};
362 // Never move original objects, clone them
363 target[ name ] = jQuery.extend( deep, clone, copy );
365 // Don't bring in undefined values
366 } else if ( copy !== undefined ) {
367 target[ name ] = copy;
373 // Return the modified object
378 noConflict: function( deep ) {
382 window.jQuery = _jQuery;
388 // Is the DOM ready to be used? Set to true once it occurs.
391 // A counter to track how many items to wait for before
392 // the ready event fires. See #6781
395 // Handle when the DOM is ready
396 ready: function( wait ) {
397 // A third-party is pushing the ready event forwards
398 if ( wait === true ) {
402 // Make sure that the DOM is not already loaded
403 if ( !jQuery.readyWait || (wait !== true && !jQuery.isReady) ) {
404 // Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
405 if ( !document.body ) {
406 return setTimeout( jQuery.ready, 1 );
409 // Remember that the DOM is ready
410 jQuery.isReady = true;
412 // If a normal DOM Ready event fired, decrement, and wait if need be
413 if ( wait !== true && --jQuery.readyWait > 0 ) {
417 // If there are functions bound, to execute
419 // Execute all of them
424 // Reset the list of functions
427 while ( (fn = ready[ i++ ]) ) {
428 fn.call( document, jQuery );
431 // Trigger any bound ready events
432 if ( jQuery.fn.trigger ) {
433 jQuery( document ).trigger( "ready" ).unbind( "ready" );
439 bindReady: function() {
446 // Catch cases where $(document).ready() is called after the
447 // browser event has already occurred.
448 if ( document.readyState === "complete" ) {
449 // Handle it asynchronously to allow scripts the opportunity to delay ready
450 return setTimeout( jQuery.ready, 1 );
453 // Mozilla, Opera and webkit nightlies currently support this event
454 if ( document.addEventListener ) {
455 // Use the handy event callback
456 document.addEventListener( "DOMContentLoaded", DOMContentLoaded, false );
458 // A fallback to window.onload, that will always work
459 window.addEventListener( "load", jQuery.ready, false );
461 // If IE event model is used
462 } else if ( document.attachEvent ) {
463 // ensure firing before onload,
464 // maybe late but safe also for iframes
465 document.attachEvent("onreadystatechange", DOMContentLoaded);
467 // A fallback to window.onload, that will always work
468 window.attachEvent( "onload", jQuery.ready );
470 // If IE and not a frame
471 // continually check to see if the document is ready
472 var toplevel = false;
475 toplevel = window.frameElement == null;
478 if ( document.documentElement.doScroll && toplevel ) {
484 // See test/unit/core.js for details concerning isFunction.
485 // Since version 1.3, DOM methods and functions like alert
486 // aren't supported. They return false on IE (#2968).
487 isFunction: function( obj ) {
488 return jQuery.type(obj) === "function";
491 isArray: Array.isArray || function( obj ) {
492 return jQuery.type(obj) === "array";
495 // A crude way of determining if an object is a window
496 isWindow: function( obj ) {
497 return obj && typeof obj === "object" && "setInterval" in obj;
500 isNaN: function( obj ) {
501 return obj == null || !rdigit.test( obj ) || isNaN( obj );
504 type: function( obj ) {
507 class2type[ toString.call(obj) ] || "object";
510 isPlainObject: function( obj ) {
511 // Must be an Object.
512 // Because of IE, we also have to check the presence of the constructor property.
513 // Make sure that DOM nodes and window objects don't pass through, as well
514 if ( !obj || jQuery.type(obj) !== "object" || obj.nodeType || jQuery.isWindow( obj ) ) {
518 // Not own constructor property must be Object
519 if ( obj.constructor &&
520 !hasOwn.call(obj, "constructor") &&
521 !hasOwn.call(obj.constructor.prototype, "isPrototypeOf") ) {
525 // Own properties are enumerated firstly, so to speed up,
526 // if last one is own, then all properties are own.
529 for ( key in obj ) {}
531 return key === undefined || hasOwn.call( obj, key );
534 isEmptyObject: function( obj ) {
535 for ( var name in obj ) {
541 error: function( msg ) {
545 parseJSON: function( data ) {
546 if ( typeof data !== "string" || !data ) {
550 // Make sure leading/trailing whitespace is removed (IE can't handle it)
551 data = jQuery.trim( data );
553 // Make sure the incoming data is actual JSON
554 // Logic borrowed from http://json.org/json2.js
555 if ( rvalidchars.test(data.replace(rvalidescape, "@")
556 .replace(rvalidtokens, "]")
557 .replace(rvalidbraces, "")) ) {
559 // Try to use the native JSON parser first
560 return window.JSON && window.JSON.parse ?
561 window.JSON.parse( data ) :
562 (new Function("return " + data))();
565 jQuery.error( "Invalid JSON: " + data );
571 // Evalulates a script in a global context
572 globalEval: function( data ) {
573 if ( data && rnotwhite.test(data) ) {
574 // Inspired by code by Andrea Giammarchi
575 // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
576 var head = document.getElementsByTagName("head")[0] || document.documentElement,
577 script = document.createElement("script");
579 script.type = "text/javascript";
581 if ( jQuery.support.scriptEval ) {
582 script.appendChild( document.createTextNode( data ) );
587 // Use insertBefore instead of appendChild to circumvent an IE6 bug.
588 // This arises when a base node is used (#2709).
589 head.insertBefore( script, head.firstChild );
590 head.removeChild( script );
594 nodeName: function( elem, name ) {
595 return elem.nodeName && elem.nodeName.toUpperCase() === name.toUpperCase();
598 // args is for internal usage only
599 each: function( object, callback, args ) {
601 length = object.length,
602 isObj = length === undefined || jQuery.isFunction(object);
606 for ( name in object ) {
607 if ( callback.apply( object[ name ], args ) === false ) {
612 for ( ; i < length; ) {
613 if ( callback.apply( object[ i++ ], args ) === false ) {
619 // A special, fast, case for the most common use of each
622 for ( name in object ) {
623 if ( callback.call( object[ name ], name, object[ name ] ) === false ) {
628 for ( var value = object[0];
629 i < length && callback.call( value, i, value ) !== false; value = object[++i] ) {}
636 // Use native String.trim function wherever possible
639 return text == null ?
644 // Otherwise use our own trimming functionality
646 return text == null ?
648 text.toString().replace( trimLeft, "" ).replace( trimRight, "" );
651 // results is for internal usage only
652 makeArray: function( array, results ) {
653 var ret = results || [];
655 if ( array != null ) {
656 // The window, strings (and functions) also have 'length'
657 // The extra typeof function check is to prevent crashes
658 // in Safari 2 (See: #3039)
659 // Tweaked logic slightly to handle Blackberry 4.7 RegExp issues #6930
660 var type = jQuery.type(array);
662 if ( array.length == null || type === "string" || type === "function" || type === "regexp" || jQuery.isWindow( array ) ) {
663 push.call( ret, array );
665 jQuery.merge( ret, array );
672 inArray: function( elem, array ) {
673 if ( array.indexOf ) {
674 return array.indexOf( elem );
677 for ( var i = 0, length = array.length; i < length; i++ ) {
678 if ( array[ i ] === elem ) {
686 merge: function( first, second ) {
687 var i = first.length,
690 if ( typeof second.length === "number" ) {
691 for ( var l = second.length; j < l; j++ ) {
692 first[ i++ ] = second[ j ];
696 while ( second[j] !== undefined ) {
697 first[ i++ ] = second[ j++ ];
706 grep: function( elems, callback, inv ) {
707 var ret = [], retVal;
710 // Go through the array, only saving the items
711 // that pass the validator function
712 for ( var i = 0, length = elems.length; i < length; i++ ) {
713 retVal = !!callback( elems[ i ], i );
714 if ( inv !== retVal ) {
715 ret.push( elems[ i ] );
722 // arg is for internal usage only
723 map: function( elems, callback, arg ) {
726 // Go through the array, translating each of the items to their
727 // new value (or values).
728 for ( var i = 0, length = elems.length; i < length; i++ ) {
729 value = callback( elems[ i ], i, arg );
731 if ( value != null ) {
732 ret[ ret.length ] = value;
736 return ret.concat.apply( [], ret );
739 // A global GUID counter for objects
742 proxy: function( fn, proxy, thisObject ) {
743 if ( arguments.length === 2 ) {
744 if ( typeof proxy === "string" ) {
746 fn = thisObject[ proxy ];
749 } else if ( proxy && !jQuery.isFunction( proxy ) ) {
755 if ( !proxy && fn ) {
757 return fn.apply( thisObject || this, arguments );
761 // Set the guid of unique handler to the same of original handler, so it can be removed
763 proxy.guid = fn.guid = fn.guid || proxy.guid || jQuery.guid++;
766 // So proxy can be declared as an argument
770 // Mutifunctional method to get and set values to a collection
771 // The value/s can be optionally by executed if its a function
772 access: function( elems, key, value, exec, fn, pass ) {
773 var length = elems.length;
775 // Setting many attributes
776 if ( typeof key === "object" ) {
777 for ( var k in key ) {
778 jQuery.access( elems, k, key[k], exec, fn, value );
783 // Setting one attribute
784 if ( value !== undefined ) {
785 // Optionally, function values get executed if exec is true
786 exec = !pass && exec && jQuery.isFunction(value);
788 for ( var i = 0; i < length; i++ ) {
789 fn( elems[i], key, exec ? value.call( elems[i], i, fn( elems[i], key ) ) : value, pass );
795 // Getting an attribute
796 return length ? fn( elems[0], key ) : undefined;
800 return (new Date()).getTime();
803 // Use of jQuery.browser is frowned upon.
804 // More details: http://docs.jquery.com/Utilities/jQuery.browser
805 uaMatch: function( ua ) {
806 ua = ua.toLowerCase();
808 var match = rwebkit.exec( ua ) ||
811 ua.indexOf("compatible") < 0 && rmozilla.exec( ua ) ||
814 return { browser: match[1] || "", version: match[2] || "0" };
820 // Populate the class2type map
821 jQuery.each("Boolean Number String Function Array Date RegExp Object".split(" "), function(i, name) {
822 class2type[ "[object " + name + "]" ] = name.toLowerCase();
825 browserMatch = jQuery.uaMatch( userAgent );
826 if ( browserMatch.browser ) {
827 jQuery.browser[ browserMatch.browser ] = true;
828 jQuery.browser.version = browserMatch.version;
831 // Deprecated, use jQuery.browser.webkit instead
832 if ( jQuery.browser.webkit ) {
833 jQuery.browser.safari = true;
837 jQuery.inArray = function( elem, array ) {
838 return indexOf.call( array, elem );
842 // Verify that \s matches non-breaking spaces
843 // (IE fails on this test)
844 if ( !rwhite.test( "\xA0" ) ) {
845 trimLeft = /^[\s\xA0]+/;
846 trimRight = /[\s\xA0]+$/;
849 // All jQuery objects should point back to these
850 rootjQuery = jQuery(document);
852 // Cleanup functions for the document ready method
853 if ( document.addEventListener ) {
854 DOMContentLoaded = function() {
855 document.removeEventListener( "DOMContentLoaded", DOMContentLoaded, false );
859 } else if ( document.attachEvent ) {
860 DOMContentLoaded = function() {
861 // Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
862 if ( document.readyState === "complete" ) {
863 document.detachEvent( "onreadystatechange", DOMContentLoaded );
869 // The DOM ready check for Internet Explorer
870 function doScrollCheck() {
871 if ( jQuery.isReady ) {
876 // If IE is used, use the trick by Diego Perini
877 // http://javascript.nwbox.com/IEContentLoaded/
878 document.documentElement.doScroll("left");
880 setTimeout( doScrollCheck, 1 );
884 // and execute any waiting functions
888 // Expose jQuery to the global object
889 return (window.jQuery = window.$ = jQuery);