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 = /^[^<]*(<(.|\s)+>)[^>]*$|^#([\w-]+)$/,
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[3] );
76 // Handle the case where IE and Opera return items
77 // by name instead of ID
78 if ( elem.id !== match[3] ) 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
133 // Get the Nth element in the matched element set OR
134 // Get the whole matched element set as a clean array
135 get: function( num ) {
138 // Return a 'clean' array
141 // Return just the object
142 ( num < 0 ? this.toArray(num)[ 0 ] : this[ num ] );
145 // Take an array of elements and push it onto the stack
146 // (returning the new matched element set)
147 pushStack: function( elems, name, selector ) {
148 // Build a new jQuery matched element set
149 var ret = jQuery( elems || null );
151 // Add the old object onto the stack (as a reference)
152 ret.prevObject = this;
154 ret.context = this.context;
156 if ( name === "find" ) {
157 ret.selector = this.selector + (this.selector ? " " : "") + selector;
159 ret.selector = this.selector + "." + name + "(" + selector + ")";
162 // Return the newly-formed element set
166 // Force the current matched set of elements to become
167 // the specified array of elements (destroying the stack in the process)
168 // You should use pushStack() in order to do this, but maintain the stack
169 setArray: function( elems ) {
170 // Resetting the length to 0, then using the native Array push
171 // is a super-fast way to populate an object with array-like properties
173 push.apply( this, elems );
178 // Execute a callback for every element in the matched set.
179 // (You can seed the arguments with an array of args, but this is
180 // only used internally.)
181 each: function( callback, args ) {
182 return jQuery.each( this, callback, args );
185 // Determine the position of an element within
186 // the matched set of elements
187 index: function( elem ) {
188 if ( !elem || typeof elem === "string" ) {
189 return jQuery.inArray( this[0],
190 // If it receives a string, the selector is used
191 // If it receives nothing, the siblings are used
192 elem ? jQuery( elem ) : this.parent().children() );
194 // Locate the position of the desired element
195 return jQuery.inArray(
196 // If it receives a jQuery object, the first element is used
197 elem.jquery ? elem[0] : elem, this );
200 is: function( selector ) {
201 return !!selector && jQuery.multiFilter( selector, this ).length > 0;
204 // For internal use only.
205 // Behaves like an Array's method, not like a jQuery method.
211 // Give the init function the jQuery prototype for later instantiation
212 jQuery.fn.init.prototype = jQuery.fn;
214 jQuery.extend = jQuery.fn.extend = function() {
215 // copy reference to target object
216 var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options, name, src, copy;
218 // Handle a deep copy situation
219 if ( typeof target === "boolean" ) {
221 target = arguments[1] || {};
222 // skip the boolean and the target
226 // Handle case when target is a string or something (possible in deep copy)
227 if ( typeof target !== "object" && !jQuery.isFunction(target) ) {
231 // extend jQuery itself if only one argument is passed
232 if ( length === i ) {
237 for ( ; i < length; i++ ) {
238 // Only deal with non-null/undefined values
239 if ( (options = arguments[ i ]) != null ) {
240 // Extend the base object
241 for ( name in options ) {
242 src = target[ name ];
243 copy = options[ name ];
245 // Prevent never-ending loop
246 if ( target === copy ) {
250 // Recurse if we're merging object values
251 if ( deep && copy && typeof copy === "object" && !copy.nodeType ) {
256 } else if ( jQuery.isArray(copy) ) {
258 } else if ( jQuery.isObject(copy) ) {
264 // Never move original objects, clone them
265 target[ name ] = jQuery.extend( deep, clone, copy );
267 // Don't bring in undefined values
268 } else if ( copy !== undefined ) {
269 target[ name ] = copy;
275 // Return the modified object
280 noConflict: function( deep ) {
284 window.jQuery = _jQuery;
290 // See test/unit/core.js for details concerning isFunction.
291 // Since version 1.3, DOM methods and functions like alert
292 // aren't supported. They return false on IE (#2968).
293 isFunction: function( obj ) {
294 return toString.call(obj) === "[object Function]";
297 isArray: function( obj ) {
298 return toString.call(obj) === "[object Array]";
301 isObject: function( obj ) {
302 return this.constructor.call(obj) === Object;
305 isEmptyObject: function( obj ) {
306 for ( var name in obj ) {
312 // check if an element is in a (or is an) XML document
313 isXMLDoc: function( elem ) {
314 return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" ||
315 !!elem.ownerDocument && elem.ownerDocument.documentElement.nodeName !== "HTML";
318 // Evalulates a script in a global context
319 globalEval: function( data ) {
320 if ( data && rnotwhite.test(data) ) {
321 // Inspired by code by Andrea Giammarchi
322 // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
323 var head = document.getElementsByTagName("head")[0] || document.documentElement,
324 script = document.createElement("script");
326 script.type = "text/javascript";
328 if ( jQuery.support.scriptEval ) {
329 script.appendChild( document.createTextNode( data ) );
334 // Use insertBefore instead of appendChild to circumvent an IE6 bug.
335 // This arises when a base node is used (#2709).
336 head.insertBefore( script, head.firstChild );
337 head.removeChild( script );
341 nodeName: function( elem, name ) {
342 return elem.nodeName && elem.nodeName.toUpperCase() === name.toUpperCase();
345 // args is for internal usage only
346 each: function( object, callback, args ) {
348 length = object.length,
349 isObj = length === undefined || jQuery.isFunction(object);
353 for ( name in object ) {
354 if ( callback.apply( object[ name ], args ) === false ) {
359 for ( ; i < length; ) {
360 if ( callback.apply( object[ i++ ], args ) === false ) {
366 // A special, fast, case for the most common use of each
369 for ( name in object ) {
370 if ( callback.call( object[ name ], name, object[ name ] ) === false ) {
375 for ( var value = object[0];
376 i < length && callback.call( value, i, value ) !== false; value = object[++i] ) {}
383 trim: function( text ) {
384 return (text || "").replace( rtrim, "" );
387 makeArray: function( array ) {
390 if ( array != null ) {
393 // The window, strings (and functions) also have 'length'
394 if ( i == null || typeof array === "string" || jQuery.isFunction(array) || array.setInterval ) {
406 inArray: function( elem, array ) {
407 for ( var i = 0, length = array.length; i < length; i++ ) {
408 if ( array[ i ] === elem ) {
416 merge: function( first, second ) {
417 // We have to loop this way because IE & Opera overwrite the length
418 // expando of getElementsByTagName
419 var i = 0, elem, pos = first.length;
421 // Also, we need to make sure that the correct elements are being returned
422 // (IE returns comment nodes in a '*' query)
423 if ( !jQuery.support.getAll ) {
424 while ( (elem = second[ i++ ]) != null ) {
425 if ( elem.nodeType !== 8 ) {
426 first[ pos++ ] = elem;
431 while ( (elem = second[ i++ ]) != null ) {
432 first[ pos++ ] = elem;
439 unique: function( array ) {
440 var ret = [], done = {}, id;
443 for ( var i = 0, length = array.length; i < length; i++ ) {
444 id = jQuery.data( array[ i ] );
448 ret.push( array[ i ] );
458 grep: function( elems, callback, inv ) {
461 // Go through the array, only saving the items
462 // that pass the validator function
463 for ( var i = 0, length = elems.length; i < length; i++ ) {
464 if ( !inv !== !callback( elems[ i ], i ) ) {
465 ret.push( elems[ i ] );
472 map: function( elems, callback ) {
475 // Go through the array, translating each of the items to their
476 // new value (or values).
477 for ( var i = 0, length = elems.length; i < length; i++ ) {
478 value = callback( elems[ i ], i );
480 if ( value != null ) {
481 ret[ ret.length ] = value;
485 return ret.concat.apply( [], ret );
488 // Use of jQuery.browser is deprecated.
489 // It's included for backwards compatibility and plugins,
490 // although they should work to migrate away.
492 version: (/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/.exec(userAgent) || [0,'0'])[1],
493 safari: /webkit/.test( userAgent ),
494 opera: /opera/.test( userAgent ),
495 msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),
496 mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent )
500 // All jQuery objects should point back to these
501 rootjQuery = jQuery(document);
503 function evalScript( i, elem ) {
511 jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
514 if ( elem.parentNode ) {
515 elem.parentNode.removeChild( elem );
520 return (new Date).getTime();