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 = /^.[^:#\[\.,]*$/,
28 // Check if a string has a non-whitespace character in it
31 // Used for trimming whitespace
34 // Keep a UserAgent string for use with jQuery.browser
35 userAgent = navigator.userAgent.toLowerCase(),
37 // Save a reference to some core methods
38 toString = Object.prototype.toString,
39 push = Array.prototype.push,
40 slice = Array.prototype.slice;
42 // Expose jQuery to the global object
43 window.jQuery = window.$ = jQuery;
45 jQuery.fn = jQuery.prototype = {
46 init: function( selector, context ) {
49 // Handle $(""), $(null), or $(undefined)
50 if ( !selector ) return this;
52 // Handle $(DOMElement)
53 if ( selector.nodeType ) {
54 this.context = this[0] = selector;
59 // Handle HTML strings
60 if ( typeof selector === "string" ) {
61 // Are we dealing with HTML string or an ID?
62 match = quickExpr.exec( selector );
64 // Verify a match, and that no context was specified for #id
65 if ( match && (match[1] || !context) ) {
67 // HANDLE: $(html) -> $(array)
69 selector = jQuery.clean( [ match[1] ], context );
73 elem = document.getElementById( match[2] );
76 // Handle the case where IE and Opera return items
77 // by name instead of ID
78 if ( elem.id !== match[2] ) return rootjQuery.find( selector );
80 // Otherwise, we inject the element directly into the jQuery object
85 this.context = document;
86 this.selector = selector;
90 // HANDLE: $(expr, $(...))
91 } else if ( !context || context.jquery ) {
92 return (context || rootjQuery).find( selector );
94 // HANDLE: $(expr, context)
95 // (which is just equivalent to: $(context).find(expr)
97 return jQuery( context ).find( selector );
100 // HANDLE: $(function)
101 // Shortcut for document ready
102 } else if ( jQuery.isFunction( selector ) ) {
103 return rootjQuery.ready( selector );
106 // Make sure that old selector state is passed along
107 if ( selector.selector && selector.context ) {
108 this.selector = selector.selector;
109 this.context = selector.context;
112 return this.setArray(jQuery.isArray( selector ) ?
114 jQuery.makeArray(selector));
117 // Start with an empty selector
120 // The current version of jQuery being used
123 // The default length of a jQuery object is 0
126 // The number of elements contained in the matched element set
132 return slice.call( this, 0 );
135 // Get the Nth element in the matched element set OR
136 // Get the whole matched element set as a clean array
137 get: function( num ) {
140 // Return a 'clean' array
143 // Return just the object
144 ( num < 0 ? this.slice(num)[ 0 ] : this[ num ] );
147 // Take an array of elements and push it onto the stack
148 // (returning the new matched element set)
149 pushStack: function( elems, name, selector ) {
150 // Build a new jQuery matched element set
151 var ret = jQuery( elems || null );
153 // Add the old object onto the stack (as a reference)
154 ret.prevObject = this;
156 ret.context = this.context;
158 if ( name === "find" ) {
159 ret.selector = this.selector + (this.selector ? " " : "") + selector;
161 ret.selector = this.selector + "." + name + "(" + selector + ")";
164 // Return the newly-formed element set
168 // Force the current matched set of elements to become
169 // the specified array of elements (destroying the stack in the process)
170 // You should use pushStack() in order to do this, but maintain the stack
171 setArray: function( elems ) {
172 // Resetting the length to 0, then using the native Array push
173 // is a super-fast way to populate an object with array-like properties
175 push.apply( this, elems );
180 // Execute a callback for every element in the matched set.
181 // (You can seed the arguments with an array of args, but this is
182 // only used internally.)
183 each: function( callback, args ) {
184 return jQuery.each( this, callback, args );
187 // Determine the position of an element within
188 // the matched set of elements
189 index: function( elem ) {
190 if ( !elem || typeof elem === "string" ) {
191 return jQuery.inArray( this[0],
192 // If it receives a string, the selector is used
193 // If it receives nothing, the siblings are used
194 elem ? jQuery( elem ) : this.parent().children() );
196 // Locate the position of the desired element
197 return jQuery.inArray(
198 // If it receives a jQuery object, the first element is used
199 elem.jquery ? elem[0] : elem, this );
202 is: function( selector ) {
203 return !!selector && jQuery.multiFilter( selector, this ).length > 0;
206 // For internal use only.
207 // Behaves like an Array's method, not like a jQuery method.
213 // Give the init function the jQuery prototype for later instantiation
214 jQuery.fn.init.prototype = jQuery.fn;
216 jQuery.extend = jQuery.fn.extend = function() {
217 // copy reference to target object
218 var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options, name, src, copy;
220 // Handle a deep copy situation
221 if ( typeof target === "boolean" ) {
223 target = arguments[1] || {};
224 // skip the boolean and the target
228 // Handle case when target is a string or something (possible in deep copy)
229 if ( typeof target !== "object" && !jQuery.isFunction(target) ) {
233 // extend jQuery itself if only one argument is passed
234 if ( length === i ) {
239 for ( ; i < length; i++ ) {
240 // Only deal with non-null/undefined values
241 if ( (options = arguments[ i ]) != null ) {
242 // Extend the base object
243 for ( name in options ) {
244 src = target[ name ];
245 copy = options[ name ];
247 // Prevent never-ending loop
248 if ( target === copy ) {
252 // Recurse if we're merging object values
253 if ( deep && copy && typeof copy === "object" && !copy.nodeType ) {
258 } else if ( jQuery.isArray(copy) ) {
260 } else if ( jQuery.isObject(copy) ) {
266 // Never move original objects, clone them
267 target[ name ] = jQuery.extend( deep, clone, copy );
269 // Don't bring in undefined values
270 } else if ( copy !== undefined ) {
271 target[ name ] = copy;
277 // Return the modified object
282 noConflict: function( deep ) {
286 window.jQuery = _jQuery;
292 // See test/unit/core.js for details concerning isFunction.
293 // Since version 1.3, DOM methods and functions like alert
294 // aren't supported. They return false on IE (#2968).
295 isFunction: function( obj ) {
296 return toString.call(obj) === "[object Function]";
299 isArray: function( obj ) {
300 return toString.call(obj) === "[object Array]";
303 isObject: function( obj ) {
304 return this.constructor.call(obj) === Object;
307 isEmptyObject: function( obj ) {
308 for ( var name in obj ) {
314 // check if an element is in a (or is an) XML document
315 isXMLDoc: function( elem ) {
316 // documentElement is verified for cases where it doesn't yet exist
317 // (such as loading iframes in IE - #4833)
318 return ((elem.ownerDocument || elem).documentElement || 0).nodeName !== "HTML";
321 // Evalulates a script in a global context
322 globalEval: function( data ) {
323 if ( data && rnotwhite.test(data) ) {
324 // Inspired by code by Andrea Giammarchi
325 // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
326 var head = document.getElementsByTagName("head")[0] || document.documentElement,
327 script = document.createElement("script");
329 script.type = "text/javascript";
331 if ( jQuery.support.scriptEval ) {
332 script.appendChild( document.createTextNode( data ) );
337 // Use insertBefore instead of appendChild to circumvent an IE6 bug.
338 // This arises when a base node is used (#2709).
339 head.insertBefore( script, head.firstChild );
340 head.removeChild( script );
344 nodeName: function( elem, name ) {
345 return elem.nodeName && elem.nodeName.toUpperCase() === name.toUpperCase();
348 // args is for internal usage only
349 each: function( object, callback, args ) {
351 length = object.length,
352 isObj = length === undefined || jQuery.isFunction(object);
356 for ( name in object ) {
357 if ( callback.apply( object[ name ], args ) === false ) {
362 for ( ; i < length; ) {
363 if ( callback.apply( object[ i++ ], args ) === false ) {
369 // A special, fast, case for the most common use of each
372 for ( name in object ) {
373 if ( callback.call( object[ name ], name, object[ name ] ) === false ) {
378 for ( var value = object[0];
379 i < length && callback.call( value, i, value ) !== false; value = object[++i] ) {}
386 trim: function( text ) {
387 return (text || "").replace( rtrim, "" );
390 makeArray: function( array ) {
393 if ( array != null ) {
396 // The window, strings (and functions) also have 'length'
397 if ( i == null || typeof array === "string" || jQuery.isFunction(array) || array.setInterval ) {
409 inArray: function( elem, array ) {
410 for ( var i = 0, length = array.length; i < length; i++ ) {
411 if ( array[ i ] === elem ) {
419 merge: function( first, second ) {
420 // We have to loop this way because IE & Opera overwrite the length
421 // expando of getElementsByTagName
422 var i = 0, elem, pos = first.length;
424 // Also, we need to make sure that the correct elements are being returned
425 // (IE returns comment nodes in a '*' query)
426 if ( !jQuery.support.getAll ) {
427 while ( (elem = second[ i++ ]) != null ) {
428 if ( elem.nodeType !== 8 ) {
429 first[ pos++ ] = elem;
434 while ( (elem = second[ i++ ]) != null ) {
435 first[ pos++ ] = elem;
442 unique: function( array ) {
443 var ret = [], done = {}, id;
446 for ( var i = 0, length = array.length; i < length; i++ ) {
447 id = jQuery.data( array[ i ] );
451 ret.push( array[ i ] );
461 grep: function( elems, callback, inv ) {
464 // Go through the array, only saving the items
465 // that pass the validator function
466 for ( var i = 0, length = elems.length; i < length; i++ ) {
467 if ( !inv !== !callback( elems[ i ], i ) ) {
468 ret.push( elems[ i ] );
475 map: function( elems, callback ) {
478 // Go through the array, translating each of the items to their
479 // new value (or values).
480 for ( var i = 0, length = elems.length; i < length; i++ ) {
481 value = callback( elems[ i ], i );
483 if ( value != null ) {
484 ret[ ret.length ] = value;
488 return ret.concat.apply( [], ret );
491 // Use of jQuery.browser is deprecated.
492 // It's included for backwards compatibility and plugins,
493 // although they should work to migrate away.
495 version: (/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/.exec(userAgent) || [0,'0'])[1],
496 safari: /webkit/.test( userAgent ),
497 opera: /opera/.test( userAgent ),
498 msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),
499 mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent )
503 // All jQuery objects should point back to these
504 rootjQuery = jQuery(document);
506 function evalScript( i, elem ) {
514 jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
517 if ( elem.parentNode ) {
518 elem.parentNode.removeChild( elem );
523 return (new Date).getTime();