1 // Define a local copy of jQuery
2 var jQuery = function( selector, context ) {
3 // The jQuery object is actually just the init constructor 'enhanced'
4 return arguments.length === 0 ?
6 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 // Use the correct document accordingly with window argument (sandbox)
16 document = window.document,
18 // A central reference to the root jQuery(document)
21 // A simple way to check for HTML strings or ID strings
22 // (both of which we optimize for)
23 quickExpr = /^[^<]*(<[\w\W]+>)[^>]*$|^#([\w-]+)$/,
25 // Is it a simple selector
26 isSimple = /^.[^:#\[\.,]*$/,
28 // Check if a string has a non-whitespace character in it
31 // Used for trimming whitespace
34 // Match a standalone tag
35 rsingleTag = /^<(\w+)\s*\/?>$/,
37 // Keep a UserAgent string for use with jQuery.browser
38 userAgent = navigator.userAgent.toLowerCase(),
40 // Save a reference to some core methods
41 toString = Object.prototype.toString,
42 push = Array.prototype.push,
43 slice = Array.prototype.slice;
45 jQuery.fn = jQuery.prototype = {
46 init: function( selector, context ) {
47 var match, elem, ret, doc;
49 // Handle $(""), $(null), or $(undefined)
54 // $("body"): Shortcut for quickly finding the body element
55 if ( selector === "body" && !context && document.body ) {
56 selector = document.body;
59 // Handle $(DOMElement)
60 if ( selector.nodeType ) {
61 this.context = this[0] = selector;
66 // Handle HTML strings
67 if ( typeof selector === "string" ) {
68 // Are we dealing with HTML string or an ID?
69 match = quickExpr.exec( selector );
71 // Verify a match, and that no context was specified for #id
72 if ( match && (match[1] || !context) ) {
74 // HANDLE: $(html) -> $(array)
76 doc = (context ? context.ownerDocument || context : document);
78 // If a single string is passed in and it's a single tag
79 // just do a createElement and skip the rest
80 ret = rsingleTag.exec( selector );
83 selector = [ doc.createElement( ret[1] ) ];
86 ret = buildFragment( [ match[1] ], [ doc ] );
87 selector = (ret.cacheable ? ret.fragment.cloneNode(true) : ret.fragment).childNodes;
92 elem = document.getElementById( match[2] );
95 // Handle the case where IE and Opera return items
96 // by name instead of ID
97 if ( elem.id !== match[2] ) {
98 return rootjQuery.find( selector );
101 // Otherwise, we inject the element directly into the jQuery object
106 this.context = document;
107 this.selector = selector;
111 // HANDLE: $(expr, $(...))
112 } else if ( !context || context.jquery ) {
113 return (context || rootjQuery).find( selector );
115 // HANDLE: $(expr, context)
116 // (which is just equivalent to: $(context).find(expr)
118 return jQuery( context ).find( selector );
121 // HANDLE: $(function)
122 // Shortcut for document ready
123 } else if ( jQuery.isFunction( selector ) ) {
124 return rootjQuery.ready( selector );
127 // Make sure that old selector state is passed along
128 if ( selector.selector && selector.context ) {
129 this.selector = selector.selector;
130 this.context = selector.context;
133 return this.setArray(jQuery.isArray( selector ) ?
135 jQuery.makeArray(selector));
138 // Start with an empty selector
141 // The current version of jQuery being used
144 // The default length of a jQuery object is 0
147 // The number of elements contained in the matched element set
153 return slice.call( this, 0 );
156 // Get the Nth element in the matched element set OR
157 // Get the whole matched element set as a clean array
158 get: function( num ) {
161 // Return a 'clean' array
164 // Return just the object
165 ( num < 0 ? this.slice(num)[ 0 ] : this[ num ] );
168 // Take an array of elements and push it onto the stack
169 // (returning the new matched element set)
170 pushStack: function( elems, name, selector ) {
171 // Build a new jQuery matched element set
172 var ret = jQuery( elems || null );
174 // Add the old object onto the stack (as a reference)
175 ret.prevObject = this;
177 ret.context = this.context;
179 if ( name === "find" ) {
180 ret.selector = this.selector + (this.selector ? " " : "") + selector;
182 ret.selector = this.selector + "." + name + "(" + selector + ")";
185 // Return the newly-formed element set
189 // Force the current matched set of elements to become
190 // the specified array of elements (destroying the stack in the process)
191 // You should use pushStack() in order to do this, but maintain the stack
192 setArray: function( elems ) {
193 // Resetting the length to 0, then using the native Array push
194 // is a super-fast way to populate an object with array-like properties
196 push.apply( this, elems );
201 // Execute a callback for every element in the matched set.
202 // (You can seed the arguments with an array of args, but this is
203 // only used internally.)
204 each: function( callback, args ) {
205 return jQuery.each( this, callback, args );
208 // Determine the position of an element within
209 // the matched set of elements
210 index: function( elem ) {
211 if ( !elem || typeof elem === "string" ) {
212 return jQuery.inArray( this[0],
213 // If it receives a string, the selector is used
214 // If it receives nothing, the siblings are used
215 elem ? jQuery( elem ) : this.parent().children() );
217 // Locate the position of the desired element
218 return jQuery.inArray(
219 // If it receives a jQuery object, the first element is used
220 elem.jquery ? elem[0] : elem, this );
223 is: function( selector ) {
224 return !!selector && jQuery.multiFilter( selector, this ).length > 0;
227 // For internal use only.
228 // Behaves like an Array's method, not like a jQuery method.
234 // Give the init function the jQuery prototype for later instantiation
235 jQuery.fn.init.prototype = jQuery.fn;
237 jQuery.extend = jQuery.fn.extend = function() {
238 // copy reference to target object
239 var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options, name, src, copy;
241 // Handle a deep copy situation
242 if ( typeof target === "boolean" ) {
244 target = arguments[1] || {};
245 // skip the boolean and the target
249 // Handle case when target is a string or something (possible in deep copy)
250 if ( typeof target !== "object" && !jQuery.isFunction(target) ) {
254 // extend jQuery itself if only one argument is passed
255 if ( length === i ) {
260 for ( ; i < length; i++ ) {
261 // Only deal with non-null/undefined values
262 if ( (options = arguments[ i ]) != null ) {
263 // Extend the base object
264 for ( name in options ) {
265 src = target[ name ];
266 copy = options[ name ];
268 // Prevent never-ending loop
269 if ( target === copy ) {
273 // Recurse if we're merging object values
274 if ( deep && copy && typeof copy === "object" && !copy.nodeType ) {
279 } else if ( jQuery.isArray(copy) ) {
281 } else if ( jQuery.isObject(copy) ) {
287 // Never move original objects, clone them
288 target[ name ] = jQuery.extend( deep, clone, copy );
290 // Don't bring in undefined values
291 } else if ( copy !== undefined ) {
292 target[ name ] = copy;
298 // Return the modified object
303 noConflict: function( deep ) {
307 window.jQuery = _jQuery;
313 // See test/unit/core.js for details concerning isFunction.
314 // Since version 1.3, DOM methods and functions like alert
315 // aren't supported. They return false on IE (#2968).
316 isFunction: function( obj ) {
317 return toString.call(obj) === "[object Function]";
320 isArray: function( obj ) {
321 return toString.call(obj) === "[object Array]";
324 isObject: function( obj ) {
325 return this.constructor.call(obj) === Object;
328 isEmptyObject: function( obj ) {
329 for ( var name in obj ) {
335 // check if an element is in a (or is an) XML document
336 isXMLDoc: function( elem ) {
337 // documentElement is verified for cases where it doesn't yet exist
338 // (such as loading iframes in IE - #4833)
339 var documentElement = (elem ? elem.ownerDocument || elem : 0).documentElement;
340 return documentElement ? documentElement.nodeName !== "HTML" : false;
343 // Evalulates a script in a global context
344 globalEval: function( data ) {
345 if ( data && rnotwhite.test(data) ) {
346 // Inspired by code by Andrea Giammarchi
347 // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
348 var head = document.getElementsByTagName("head")[0] || document.documentElement,
349 script = document.createElement("script");
351 script.type = "text/javascript";
353 if ( jQuery.support.scriptEval ) {
354 script.appendChild( document.createTextNode( data ) );
359 // Use insertBefore instead of appendChild to circumvent an IE6 bug.
360 // This arises when a base node is used (#2709).
361 head.insertBefore( script, head.firstChild );
362 head.removeChild( script );
366 nodeName: function( elem, name ) {
367 return elem.nodeName && elem.nodeName.toUpperCase() === name.toUpperCase();
370 // args is for internal usage only
371 each: function( object, callback, args ) {
373 length = object.length,
374 isObj = length === undefined || jQuery.isFunction(object);
378 for ( name in object ) {
379 if ( callback.apply( object[ name ], args ) === false ) {
384 for ( ; i < length; ) {
385 if ( callback.apply( object[ i++ ], args ) === false ) {
391 // A special, fast, case for the most common use of each
394 for ( name in object ) {
395 if ( callback.call( object[ name ], name, object[ name ] ) === false ) {
400 for ( var value = object[0];
401 i < length && callback.call( value, i, value ) !== false; value = object[++i] ) {}
408 trim: function( text ) {
409 return (text || "").replace( rtrim, "" );
412 makeArray: function( array ) {
415 if ( array != null ) {
418 // The window, strings (and functions) also have 'length'
419 if ( i == null || typeof array === "string" || jQuery.isFunction(array) || array.setInterval ) {
431 inArray: function( elem, array ) {
432 for ( var i = 0, length = array.length; i < length; i++ ) {
433 if ( array[ i ] === elem ) {
441 merge: function( first, second ) {
442 // We have to loop this way because IE & Opera overwrite the length
443 // expando of getElementsByTagName
444 var i = 0, elem, pos = first.length;
446 // Also, we need to make sure that the correct elements are being returned
447 // (IE returns comment nodes in a '*' query)
448 if ( !jQuery.support.getAll ) {
449 while ( (elem = second[ i++ ]) != null ) {
450 if ( elem.nodeType !== 8 ) {
451 first[ pos++ ] = elem;
456 while ( (elem = second[ i++ ]) != null ) {
457 first[ pos++ ] = elem;
464 unique: function( array ) {
465 var ret = [], done = {}, id;
468 for ( var i = 0, length = array.length; i < length; i++ ) {
469 id = jQuery.data( array[ i ] );
473 ret.push( array[ i ] );
483 grep: function( elems, callback, inv ) {
486 // Go through the array, only saving the items
487 // that pass the validator function
488 for ( var i = 0, length = elems.length; i < length; i++ ) {
489 if ( !inv !== !callback( elems[ i ], i ) ) {
490 ret.push( elems[ i ] );
497 map: function( elems, callback ) {
500 // Go through the array, translating each of the items to their
501 // new value (or values).
502 for ( var i = 0, length = elems.length; i < length; i++ ) {
503 value = callback( elems[ i ], i );
505 if ( value != null ) {
506 ret[ ret.length ] = value;
510 return ret.concat.apply( [], ret );
513 // Use of jQuery.browser is deprecated.
514 // It's included for backwards compatibility and plugins,
515 // although they should work to migrate away.
517 version: (/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/.exec(userAgent) || [0,'0'])[1],
518 safari: /webkit/.test( userAgent ),
519 opera: /opera/.test( userAgent ),
520 msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),
521 mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent )
525 // All jQuery objects should point back to these
526 rootjQuery = jQuery(document);
528 function evalScript( i, elem ) {
536 jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
539 if ( elem.parentNode ) {
540 elem.parentNode.removeChild( elem );
545 return (new Date).getTime();