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 = /^.[^:#\[\.,]*$/,
28 // Keep a UserAgent string for use with jQuery.browser
29 userAgent = navigator.userAgent.toLowerCase(),
31 // Save a reference to the core toString method
32 toString = Object.prototype.toString;
34 // Expose jQuery to the global object
35 window.jQuery = window.$ = jQuery;
37 jQuery.fn = jQuery.prototype = {
38 init: function( selector, context ) {
41 // Handle $(""), $(null), or $(undefined)
47 // Handle $(DOMElement)
48 if ( selector.nodeType ) {
51 this.context = selector;
55 // Handle HTML strings
56 if ( typeof selector === "string" ) {
57 // Are we dealing with HTML string or an ID?
58 match = quickExpr.exec( selector );
60 // Verify a match, and that no context was specified for #id
61 if ( match && (match[1] || !context) ) {
63 // HANDLE: $(html) -> $(array)
65 selector = jQuery.clean( [ match[1] ], context );
69 elem = document.getElementById( match[3] );
71 // Handle the case where IE and Opera return items
72 // by name instead of ID
73 if ( elem && elem.id !== match[3] ) {
74 return rootjQuery.find( selector );
77 // Otherwise, we inject the element directly into the jQuery object
78 this.length = elem ? 1 : 0;
82 this.context = document;
83 this.selector = selector;
87 // HANDLE: $(expr, $(...))
88 } else if ( !context || context.jquery ) {
89 return (context || rootjQuery).find( selector );
91 // HANDLE: $(expr, context)
92 // (which is just equivalent to: $(context).find(expr)
94 return jQuery( context ).find( selector );
97 // HANDLE: $(function)
98 // Shortcut for document ready
99 } else if ( jQuery.isFunction( selector ) ) {
100 return rootjQuery.ready( selector );
103 // Make sure that old selector state is passed along
104 if ( selector.selector && selector.context ) {
105 this.selector = selector.selector;
106 this.context = selector.context;
109 return this.setArray(jQuery.isArray( selector ) ?
111 jQuery.makeArray(selector));
114 // Start with an empty selector
117 // The current version of jQuery being used
120 // The number of elements contained in the matched element set
125 toArray: Array.prototype.slice,
127 // Get the Nth element in the matched element set OR
128 // Get the whole matched element set as a clean array
129 get: function( num ) {
132 // Return a 'clean' array
135 // Return just the object
136 ( num < 0 ? this.toArray.call(this, num)[0] : this[ num ] );
139 // Take an array of elements and push it onto the stack
140 // (returning the new matched element set)
141 pushStack: function( elems, name, selector ) {
142 // Build a new jQuery matched element set
143 var ret = jQuery( elems || null );
145 // Add the old object onto the stack (as a reference)
146 ret.prevObject = this;
148 ret.context = this.context;
150 if ( name === "find" ) {
151 ret.selector = this.selector + (this.selector ? " " : "") + selector;
153 ret.selector = this.selector + "." + name + "(" + selector + ")";
156 // Return the newly-formed element set
160 // Force the current matched set of elements to become
161 // the specified array of elements (destroying the stack in the process)
162 // You should use pushStack() in order to do this, but maintain the stack
163 setArray: function( elems ) {
164 // Resetting the length to 0, then using the native Array push
165 // is a super-fast way to populate an object with array-like properties
167 Array.prototype.push.apply( this, elems );
172 // Execute a callback for every element in the matched set.
173 // (You can seed the arguments with an array of args, but this is
174 // only used internally.)
175 each: function( callback, args ) {
176 return jQuery.each( this, callback, args );
179 // Determine the position of an element within
180 // the matched set of elements
181 index: function( elem ) {
182 if ( !elem || typeof elem === "string" ) {
183 return jQuery.inArray( this[0],
184 // If it receives a string, the selector is used
185 // If it receives nothing, the siblings are used
186 elem ? jQuery( elem ) : this.parent().children() );
188 // Locate the position of the desired element
189 return jQuery.inArray(
190 // If it receives a jQuery object, the first element is used
191 elem.jquery ? elem[0] : elem, this );
194 is: function( selector ) {
195 return !!selector && jQuery.multiFilter( selector, this ).length > 0;
198 // For internal use only.
199 // Behaves like an Array's method, not like a jQuery method.
205 // Give the init function the jQuery prototype for later instantiation
206 jQuery.fn.init.prototype = jQuery.fn;
208 jQuery.extend = jQuery.fn.extend = function() {
209 // copy reference to target object
210 var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options, name, src, copy;
212 // Handle a deep copy situation
213 if ( typeof target === "boolean" ) {
215 target = arguments[1] || {};
216 // skip the boolean and the target
220 // Handle case when target is a string or something (possible in deep copy)
221 if ( typeof target !== "object" && !jQuery.isFunction(target) ) {
225 // extend jQuery itself if only one argument is passed
226 if ( length === i ) {
231 for ( ; i < length; i++ ) {
232 // Only deal with non-null/undefined values
233 if ( (options = arguments[ i ]) != null ) {
234 // Extend the base object
235 for ( name in options ) {
236 src = target[ name ];
237 copy = options[ name ];
239 // Prevent never-ending loop
240 if ( target === copy ) {
244 // Recurse if we're merging object values
245 if ( deep && copy && typeof copy === "object" && !copy.nodeType ) {
248 if( src ) clone = src;
249 else if( jQuery.isArray(copy) ) clone = [ ];
250 else if( jQuery.isObject(copy) ) clone = { };
253 // Never move original objects, clone them
254 target[ name ] = jQuery.extend( deep, clone, copy );
256 // Don't bring in undefined values
257 } else if ( copy !== undefined ) {
258 target[ name ] = copy;
264 // Return the modified object
269 noConflict: function( deep ) {
273 window.jQuery = _jQuery;
279 // See test/unit/core.js for details concerning isFunction.
280 // Since version 1.3, DOM methods and functions like alert
281 // aren't supported. They return false on IE (#2968).
282 isFunction: function( obj ) {
283 return toString.call(obj) === "[object Function]";
286 isArray: function( obj ) {
287 return toString.call(obj) === "[object Array]";
290 isObject: function( obj ) {
291 return this.constructor.call(obj) === Object;
294 isEmptyObject: function( obj ) {
296 for(name in obj) break;
300 // check if an element is in a (or is an) XML document
301 isXMLDoc: function( elem ) {
302 return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" ||
303 !!elem.ownerDocument && elem.ownerDocument.documentElement.nodeName !== "HTML";
306 // Evalulates a script in a global context
307 globalEval: function( data ) {
308 if ( data && /\S/.test(data) ) {
309 // Inspired by code by Andrea Giammarchi
310 // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
311 var head = document.getElementsByTagName("head")[0] || document.documentElement,
312 script = document.createElement("script");
314 script.type = "text/javascript";
315 if ( jQuery.support.scriptEval ) {
316 script.appendChild( document.createTextNode( data ) );
321 // Use insertBefore instead of appendChild to circumvent an IE6 bug.
322 // This arises when a base node is used (#2709).
323 head.insertBefore( script, head.firstChild );
324 head.removeChild( script );
328 nodeName: function( elem, name ) {
329 return elem.nodeName && elem.nodeName.toUpperCase() === name.toUpperCase();
332 // args is for internal usage only
333 each: function( object, callback, args ) {
335 length = object.length,
336 isObj = length === undefined || jQuery.isFunction(object);
340 for ( name in object ) {
341 if ( callback.apply( object[ name ], args ) === false ) {
346 for ( ; i < length; ) {
347 if ( callback.apply( object[ i++ ], args ) === false ) {
353 // A special, fast, case for the most common use of each
356 for ( name in object ) {
357 if ( callback.call( object[ name ], name, object[ name ] ) === false ) {
362 for ( var value = object[0];
363 i < length && callback.call( value, i, value ) !== false; value = object[++i] ) {}
370 trim: function( text ) {
371 return (text || "").replace( /^\s+|\s+$/g, "" );
374 makeArray: function( array ) {
377 if ( array != null ) {
380 // The window, strings (and functions) also have 'length'
381 if ( i == null || typeof array === "string" || jQuery.isFunction(array) || array.setInterval ) {
393 inArray: function( elem, array ) {
394 for ( var i = 0, length = array.length; i < length; i++ ) {
395 if ( array[ i ] === elem ) {
403 merge: function( first, second ) {
404 // We have to loop this way because IE & Opera overwrite the length
405 // expando of getElementsByTagName
406 var i = 0, elem, pos = first.length;
408 // Also, we need to make sure that the correct elements are being returned
409 // (IE returns comment nodes in a '*' query)
410 if ( !jQuery.support.getAll ) {
411 while ( (elem = second[ i++ ]) != null ) {
412 if ( elem.nodeType !== 8 ) {
413 first[ pos++ ] = elem;
418 while ( (elem = second[ i++ ]) != null ) {
419 first[ pos++ ] = elem;
426 unique: function( array ) {
427 var ret = [], done = {}, id;
430 for ( var i = 0, length = array.length; i < length; i++ ) {
431 id = jQuery.data( array[ i ] );
435 ret.push( array[ i ] );
445 grep: function( elems, callback, inv ) {
448 // Go through the array, only saving the items
449 // that pass the validator function
450 for ( var i = 0, length = elems.length; i < length; i++ ) {
451 if ( !inv !== !callback( elems[ i ], i ) ) {
452 ret.push( elems[ i ] );
459 map: function( elems, callback ) {
462 // Go through the array, translating each of the items to their
463 // new value (or values).
464 for ( var i = 0, length = elems.length; i < length; i++ ) {
465 value = callback( elems[ i ], i );
467 if ( value != null ) {
468 ret[ ret.length ] = value;
472 return ret.concat.apply( [], ret );
475 // Use of jQuery.browser is deprecated.
476 // It's included for backwards compatibility and plugins,
477 // although they should work to migrate away.
479 version: (userAgent.match( /.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/ ) || [0,'0'])[1],
480 safari: /webkit/.test( userAgent ),
481 opera: /opera/.test( userAgent ),
482 msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),
483 mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent )
487 // All jQuery objects should point back to these
488 rootjQuery = jQuery(document);
490 function evalScript( i, elem ) {
498 jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
501 if ( elem.parentNode ) {
502 elem.parentNode.removeChild( elem );
507 return (new Date).getTime();