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 = /^.[^:#\[\.,]*$/,
28 // Check if a string has a non-whitespace character in it
31 // Used for trimming whitespace
34 // Keep a UserAgent string for use with jQuery.browser
35 userAgent = navigator.userAgent.toLowerCase(),
37 // Save a reference to the core toString method
38 toString = Object.prototype.toString;
40 // Expose jQuery to the global object
41 window.jQuery = window.$ = jQuery;
43 jQuery.fn = jQuery.prototype = {
44 init: function( selector, context ) {
47 // Handle $(""), $(null), or $(undefined)
48 if ( !selector ) return this;
50 // Handle $(DOMElement)
51 if ( selector.nodeType ) {
52 this.context = this[0] = selector;
57 // Handle HTML strings
58 if ( typeof selector === "string" ) {
59 // Are we dealing with HTML string or an ID?
60 match = quickExpr.exec( selector );
62 // Verify a match, and that no context was specified for #id
63 if ( match && (match[1] || !context) ) {
65 // HANDLE: $(html) -> $(array)
67 selector = jQuery.clean( [ match[1] ], context );
71 elem = document.getElementById( match[3] );
74 // Handle the case where IE and Opera return items
75 // by name instead of ID
76 if ( elem.id !== match[3] ) return rootjQuery.find( selector );
78 // Otherwise, we inject the element directly into the jQuery object
83 this.context = document;
84 this.selector = selector;
88 // HANDLE: $(expr, $(...))
89 } else if ( !context || context.jquery ) {
90 return (context || rootjQuery).find( selector );
92 // HANDLE: $(expr, context)
93 // (which is just equivalent to: $(context).find(expr)
95 return jQuery( context ).find( selector );
98 // HANDLE: $(function)
99 // Shortcut for document ready
100 } else if ( jQuery.isFunction( selector ) ) {
101 return rootjQuery.ready( selector );
104 // Make sure that old selector state is passed along
105 if ( selector.selector && selector.context ) {
106 this.selector = selector.selector;
107 this.context = selector.context;
110 return this.setArray(jQuery.isArray( selector ) ?
112 jQuery.makeArray(selector));
115 // Start with an empty selector
118 // The current version of jQuery being used
121 // The default length of a jQuery object is 0
124 // The number of elements contained in the matched element set
129 toArray: Array.prototype.slice,
131 // Get the Nth element in the matched element set OR
132 // Get the whole matched element set as a clean array
133 get: function( num ) {
136 // Return a 'clean' array
139 // Return just the object
140 ( num < 0 ? this.toArray(num)[ 0 ] : this[ num ] );
143 // Take an array of elements and push it onto the stack
144 // (returning the new matched element set)
145 pushStack: function( elems, name, selector ) {
146 // Build a new jQuery matched element set
147 var ret = jQuery( elems || null );
149 // Add the old object onto the stack (as a reference)
150 ret.prevObject = this;
152 ret.context = this.context;
154 if ( name === "find" ) {
155 ret.selector = this.selector + (this.selector ? " " : "") + selector;
157 ret.selector = this.selector + "." + name + "(" + selector + ")";
160 // Return the newly-formed element set
164 // Force the current matched set of elements to become
165 // the specified array of elements (destroying the stack in the process)
166 // You should use pushStack() in order to do this, but maintain the stack
167 setArray: function( elems ) {
168 // Resetting the length to 0, then using the native Array push
169 // is a super-fast way to populate an object with array-like properties
171 Array.prototype.push.apply( this, elems );
176 // Execute a callback for every element in the matched set.
177 // (You can seed the arguments with an array of args, but this is
178 // only used internally.)
179 each: function( callback, args ) {
180 return jQuery.each( this, callback, args );
183 // Determine the position of an element within
184 // the matched set of elements
185 index: function( elem ) {
186 if ( !elem || typeof elem === "string" ) {
187 return jQuery.inArray( this[0],
188 // If it receives a string, the selector is used
189 // If it receives nothing, the siblings are used
190 elem ? jQuery( elem ) : this.parent().children() );
192 // Locate the position of the desired element
193 return jQuery.inArray(
194 // If it receives a jQuery object, the first element is used
195 elem.jquery ? elem[0] : elem, this );
198 is: function( selector ) {
199 return !!selector && jQuery.multiFilter( selector, this ).length > 0;
202 // For internal use only.
203 // Behaves like an Array's method, not like a jQuery method.
209 // Give the init function the jQuery prototype for later instantiation
210 jQuery.fn.init.prototype = jQuery.fn;
212 jQuery.extend = jQuery.fn.extend = function() {
213 // copy reference to target object
214 var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options, name, src, copy;
216 // Handle a deep copy situation
217 if ( typeof target === "boolean" ) {
219 target = arguments[1] || {};
220 // skip the boolean and the target
224 // Handle case when target is a string or something (possible in deep copy)
225 if ( typeof target !== "object" && !jQuery.isFunction(target) ) {
229 // extend jQuery itself if only one argument is passed
230 if ( length === i ) {
235 for ( ; i < length; i++ ) {
236 // Only deal with non-null/undefined values
237 if ( (options = arguments[ i ]) != null ) {
238 // Extend the base object
239 for ( name in options ) {
240 src = target[ name ];
241 copy = options[ name ];
243 // Prevent never-ending loop
244 if ( target === copy ) {
248 // Recurse if we're merging object values
249 if ( deep && copy && typeof copy === "object" && !copy.nodeType ) {
252 if( src ) clone = src;
253 else if( jQuery.isArray(copy) ) clone = [ ];
254 else if( jQuery.isObject(copy) ) clone = { };
257 // Never move original objects, clone them
258 target[ name ] = jQuery.extend( deep, clone, copy );
260 // Don't bring in undefined values
261 } else if ( copy !== undefined ) {
262 target[ name ] = copy;
268 // Return the modified object
273 noConflict: function( deep ) {
277 window.jQuery = _jQuery;
283 // See test/unit/core.js for details concerning isFunction.
284 // Since version 1.3, DOM methods and functions like alert
285 // aren't supported. They return false on IE (#2968).
286 isFunction: function( obj ) {
287 return toString.call(obj) === "[object Function]";
290 isArray: function( obj ) {
291 return toString.call(obj) === "[object Array]";
294 isObject: function( obj ) {
295 return this.constructor.call(obj) === Object;
298 isEmptyObject: function( obj ) {
304 // check if an element is in a (or is an) XML document
305 isXMLDoc: function( elem ) {
306 return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" ||
307 !!elem.ownerDocument && elem.ownerDocument.documentElement.nodeName !== "HTML";
310 // Evalulates a script in a global context
311 globalEval: function( data ) {
312 if ( data && rnotwhite.test(data) ) {
313 // Inspired by code by Andrea Giammarchi
314 // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
315 var head = document.getElementsByTagName("head")[0] || document.documentElement,
316 script = document.createElement("script");
318 script.type = "text/javascript";
319 if ( jQuery.support.scriptEval ) {
320 script.appendChild( document.createTextNode( data ) );
325 // Use insertBefore instead of appendChild to circumvent an IE6 bug.
326 // This arises when a base node is used (#2709).
327 head.insertBefore( script, head.firstChild );
328 head.removeChild( script );
332 nodeName: function( elem, name ) {
333 return elem.nodeName && elem.nodeName.toUpperCase() === name.toUpperCase();
336 // args is for internal usage only
337 each: function( object, callback, args ) {
339 length = object.length,
340 isObj = length === undefined || jQuery.isFunction(object);
344 for ( name in object ) {
345 if ( callback.apply( object[ name ], args ) === false ) {
350 for ( ; i < length; ) {
351 if ( callback.apply( object[ i++ ], args ) === false ) {
357 // A special, fast, case for the most common use of each
360 for ( name in object ) {
361 if ( callback.call( object[ name ], name, object[ name ] ) === false ) {
366 for ( var value = object[0];
367 i < length && callback.call( value, i, value ) !== false; value = object[++i] ) {}
374 trim: function( text ) {
375 return (text || "").replace( rtrim, "" );
378 makeArray: function( array ) {
381 if ( array != null ) {
384 // The window, strings (and functions) also have 'length'
385 if ( i == null || typeof array === "string" || jQuery.isFunction(array) || array.setInterval ) {
397 inArray: function( elem, array ) {
398 for ( var i = 0, length = array.length; i < length; i++ ) {
399 if ( array[ i ] === elem ) {
407 merge: function( first, second ) {
408 // We have to loop this way because IE & Opera overwrite the length
409 // expando of getElementsByTagName
410 var i = 0, elem, pos = first.length;
412 // Also, we need to make sure that the correct elements are being returned
413 // (IE returns comment nodes in a '*' query)
414 if ( !jQuery.support.getAll ) {
415 while ( (elem = second[ i++ ]) != null ) {
416 if ( elem.nodeType !== 8 ) {
417 first[ pos++ ] = elem;
422 while ( (elem = second[ i++ ]) != null ) {
423 first[ pos++ ] = elem;
430 unique: function( array ) {
431 var ret = [], done = {}, id;
434 for ( var i = 0, length = array.length; i < length; i++ ) {
435 id = jQuery.data( array[ i ] );
439 ret.push( array[ i ] );
449 grep: function( elems, callback, inv ) {
452 // Go through the array, only saving the items
453 // that pass the validator function
454 for ( var i = 0, length = elems.length; i < length; i++ ) {
455 if ( !inv !== !callback( elems[ i ], i ) ) {
456 ret.push( elems[ i ] );
463 map: function( elems, callback ) {
466 // Go through the array, translating each of the items to their
467 // new value (or values).
468 for ( var i = 0, length = elems.length; i < length; i++ ) {
469 value = callback( elems[ i ], i );
471 if ( value != null ) {
472 ret[ ret.length ] = value;
476 return ret.concat.apply( [], ret );
479 // Use of jQuery.browser is deprecated.
480 // It's included for backwards compatibility and plugins,
481 // although they should work to migrate away.
483 version: (/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/.exec(userAgent) || [0,'0'])[1],
484 safari: /webkit/.test( userAgent ),
485 opera: /opera/.test( userAgent ),
486 msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),
487 mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent )
491 // All jQuery objects should point back to these
492 rootjQuery = jQuery(document);
494 function evalScript( i, elem ) {
502 jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
505 if ( elem.parentNode ) {
506 elem.parentNode.removeChild( elem );
511 return (new Date).getTime();