1 // Will speed up references to window, and allows munging its name.
4 // Will speed up references to undefined, and allows munging its name.
7 // Map over jQuery in case of overwrite
8 _jQuery = window.jQuery,
10 // Map over the $ in case of overwrite
13 // Define a local copy of jQuery
16 // A central reference to the root jQuery(document)
19 jQuery = window.jQuery = window.$ = function( selector, context ) {
20 // The jQuery object is actually just the init constructor 'enhanced'
21 return selector === undefined ?
23 new jQuery.fn.init( selector, context );
26 // A simple way to check for HTML strings or ID strings
27 // (both of which we optimize for)
28 quickExpr = /^[^<]*(<(.|\s)+>)[^>]*$|^#([\w-]+)$/,
30 // Is it a simple selector
31 isSimple = /^.[^:#\[\.,]*$/,
33 // Keep a UserAgent string for use with jQuery.browser
34 userAgent = navigator.userAgent.toLowerCase(),
36 // Save a reference to the core toString method
37 toString = Object.prototype.toString;
39 // Define the main jQuery method
40 jQuery = window.jQuery = window.$ = function( selector, context ) {
41 // The jQuery object is actually just the init constructor 'enhanced'
42 return new jQuery.fn.init( selector, context );
45 jQuery.fn = jQuery.prototype = {
46 init: function( selector, context ) {
49 // Handle $(""), $(null), or $(undefined)
55 // Handle $(DOMElement)
56 if ( selector.nodeType ) {
59 this.context = selector;
63 // Handle HTML strings
64 if ( typeof selector === "string" ) {
65 // Are we dealing with HTML string or an ID?
66 match = quickExpr.exec( selector );
68 // Verify a match, and that no context was specified for #id
69 if ( match && (match[1] || !context) ) {
71 // HANDLE: $(html) -> $(array)
73 selector = jQuery.clean( [ match[1] ], context );
77 elem = document.getElementById( match[3] );
79 // Handle the case where IE and Opera return items
80 // by name instead of ID
81 if ( elem && elem.id !== match[3] ) {
82 return rootjQuery.find( selector );
85 // Otherwise, we inject the element directly into the jQuery object
86 ret = jQuery( elem || null );
87 ret.context = document;
88 ret.selector = selector;
92 // HANDLE: $(expr, $(...))
93 } else if ( !context || context.jquery ) {
94 return (context || rootjQuery).find( selector );
96 // HANDLE: $(expr, context)
97 // (which is just equivalent to: $(context).find(expr)
99 return jQuery( context ).find( selector );
102 // HANDLE: $(function)
103 // Shortcut for document ready
104 } else if ( jQuery.isFunction( selector ) ) {
105 return rootjQuery.ready( selector );
108 // Make sure that old selector state is passed along
109 if ( selector.selector && selector.context ) {
110 this.selector = selector.selector;
111 this.context = selector.context;
114 return this.setArray(jQuery.isArray( selector ) ?
116 jQuery.makeArray(selector));
119 // Start with an empty selector
122 // The current version of jQuery being used
125 // The number of elements contained in the matched element set
130 // Get the Nth element in the matched element set OR
131 // Get the whole matched element set as a clean array
132 get: function( num ) {
135 // Return a 'clean' array
136 Array.prototype.slice.call( this ) :
138 // Return just the object
142 // Take an array of elements and push it onto the stack
143 // (returning the new matched element set)
144 pushStack: function( elems, name, selector ) {
145 // Build a new jQuery matched element set
146 var ret = jQuery( elems || null );
148 // Add the old object onto the stack (as a reference)
149 ret.prevObject = this;
151 ret.context = this.context;
153 if ( name === "find" ) {
154 ret.selector = this.selector + (this.selector ? " " : "") + selector;
156 ret.selector = this.selector + "." + name + "(" + selector + ")";
159 // Return the newly-formed element set
163 // Force the current matched set of elements to become
164 // the specified array of elements (destroying the stack in the process)
165 // You should use pushStack() in order to do this, but maintain the stack
166 setArray: function( elems ) {
167 // Resetting the length to 0, then using the native Array push
168 // is a super-fast way to populate an object with array-like properties
170 Array.prototype.push.apply( this, elems );
175 // Execute a callback for every element in the matched set.
176 // (You can seed the arguments with an array of args, but this is
177 // only used internally.)
178 each: function( callback, args ) {
179 return jQuery.each( this, callback, args );
182 // Determine the position of an element within
183 // the matched set of elements
184 index: function( elem ) {
185 if ( !elem || typeof elem === "string" ) {
186 return jQuery.inArray( this[0],
187 // If it receives a string, the selector is used
188 // If it receives nothing, the siblings are used
189 elem ? jQuery( elem ) : this.parent().children() );
191 // Locate the position of the desired element
192 return jQuery.inArray(
193 // If it receives a jQuery object, the first element is used
194 elem.jquery ? elem[0] : elem, this );
197 is: function( selector ) {
198 return !!selector && jQuery.multiFilter( selector, this ).length > 0;
201 // For internal use only.
202 // Behaves like an Array's method, not like a jQuery method.
208 // Give the init function the jQuery prototype for later instantiation
209 jQuery.fn.init.prototype = jQuery.fn;
211 jQuery.extend = jQuery.fn.extend = function() {
212 // copy reference to target object
213 var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options, name, src, copy;
215 // Handle a deep copy situation
216 if ( typeof target === "boolean" ) {
218 target = arguments[1] || {};
219 // skip the boolean and the target
223 // Handle case when target is a string or something (possible in deep copy)
224 if ( typeof target !== "object" && !jQuery.isFunction(target) ) {
228 // extend jQuery itself if only one argument is passed
229 if ( length === i ) {
234 for ( ; i < length; i++ ) {
235 // Only deal with non-null/undefined values
236 if ( (options = arguments[ i ]) != null ) {
237 // Extend the base object
238 for ( name in options ) {
239 src = target[ name ];
240 copy = options[ name ];
242 // Prevent never-ending loop
243 if ( target === copy ) {
247 // Recurse if we're merging object values
248 if ( deep && copy && typeof copy === "object" && !copy.nodeType ) {
249 target[ name ] = jQuery.extend( deep,
250 // Never move original objects, clone them
251 src || ( copy.length != null ? [ ] : { } ), copy );
253 // Don't bring in undefined values
254 } else if ( copy !== undefined ) {
255 target[ name ] = copy;
261 // Return the modified object
266 noConflict: function( deep ) {
270 window.jQuery = _jQuery;
276 // See test/unit/core.js for details concerning isFunction.
277 // Since version 1.3, DOM methods and functions like alert
278 // aren't supported. They return false on IE (#2968).
279 isFunction: function( obj ) {
280 return toString.call(obj) === "[object Function]";
283 isArray: function( obj ) {
284 return toString.call(obj) === "[object Array]";
287 // check if an element is in a (or is an) XML document
288 isXMLDoc: function( elem ) {
289 return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" ||
290 !!elem.ownerDocument && elem.ownerDocument.documentElement.nodeName !== "HTML";
293 // Evalulates a script in a global context
294 globalEval: function( data ) {
295 if ( data && /\S/.test(data) ) {
296 // Inspired by code by Andrea Giammarchi
297 // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
298 var head = document.getElementsByTagName("head")[0] || document.documentElement,
299 script = document.createElement("script");
301 script.type = "text/javascript";
302 if ( jQuery.support.scriptEval ) {
303 script.appendChild( document.createTextNode( data ) );
308 // Use insertBefore instead of appendChild to circumvent an IE6 bug.
309 // This arises when a base node is used (#2709).
310 head.insertBefore( script, head.firstChild );
311 head.removeChild( script );
315 nodeName: function( elem, name ) {
316 return elem.nodeName && elem.nodeName.toUpperCase() === name.toUpperCase();
319 // args is for internal usage only
320 each: function( object, callback, args ) {
321 var name, i = 0, length = object.length;
324 if ( length === undefined ) {
325 for ( name in object ) {
326 if ( callback.apply( object[ name ], args ) === false ) {
331 for ( ; i < length; ) {
332 if ( callback.apply( object[ i++ ], args ) === false ) {
338 // A special, fast, case for the most common use of each
340 if ( length === undefined ) {
341 for ( name in object ) {
342 if ( callback.call( object[ name ], name, object[ name ] ) === false ) {
347 for ( var value = object[0];
348 i < length && callback.call( value, i, value ) !== false; value = object[++i] ) {}
355 trim: function( text ) {
356 return (text || "").replace( /^\s+|\s+$/g, "" );
359 makeArray: function( array ) {
362 if ( array != null ) {
365 // The window, strings (and functions) also have 'length'
366 if ( i == null || typeof array === "string" || jQuery.isFunction(array) || array.setInterval ) {
378 inArray: function( elem, array ) {
379 for ( var i = 0, length = array.length; i < length; i++ ) {
380 if ( array[ i ] === elem ) {
388 merge: function( first, second ) {
389 // We have to loop this way because IE & Opera overwrite the length
390 // expando of getElementsByTagName
391 var i = 0, elem, pos = first.length;
393 // Also, we need to make sure that the correct elements are being returned
394 // (IE returns comment nodes in a '*' query)
395 if ( !jQuery.support.getAll ) {
396 while ( (elem = second[ i++ ]) != null ) {
397 if ( elem.nodeType !== 8 ) {
398 first[ pos++ ] = elem;
403 while ( (elem = second[ i++ ]) != null ) {
404 first[ pos++ ] = elem;
411 unique: function( array ) {
412 var ret = [], done = {}, id;
415 for ( var i = 0, length = array.length; i < length; i++ ) {
416 id = jQuery.data( array[ i ] );
420 ret.push( array[ i ] );
430 grep: function( elems, callback, inv ) {
433 // Go through the array, only saving the items
434 // that pass the validator function
435 for ( var i = 0, length = elems.length; i < length; i++ ) {
436 if ( !inv !== !callback( elems[ i ], i ) ) {
437 ret.push( elems[ i ] );
444 map: function( elems, callback ) {
447 // Go through the array, translating each of the items to their
448 // new value (or values).
449 for ( var i = 0, length = elems.length; i < length; i++ ) {
450 value = callback( elems[ i ], i );
452 if ( value != null ) {
453 ret[ ret.length ] = value;
457 return ret.concat.apply( [], ret );
460 // Use of jQuery.browser is deprecated.
461 // It's included for backwards compatibility and plugins,
462 // although they should work to migrate away.
464 version: (userAgent.match( /.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/ ) || [0,'0'])[1],
465 safari: /webkit/.test( userAgent ),
466 opera: /opera/.test( userAgent ),
467 msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),
468 mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent )
472 // All jQuery objects should point back to these
473 rootjQuery = jQuery(document);
475 function evalScript( i, elem ) {
483 jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
486 if ( elem.parentNode ) {
487 elem.parentNode.removeChild( elem );
492 return (new Date).getTime();