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 // A central reference to the root jQuery(document)
18 // A simple way to check for HTML strings or ID strings
19 // (both of which we optimize for)
20 quickExpr = /^[^<]*(<(.|\s)+>)[^>]*$|^#([\w-]+)$/,
22 // Is it a simple selector
23 isSimple = /^.[^:#\[\.,]*$/,
25 // Keep a UserAgent string for use with jQuery.browser
26 userAgent = navigator.userAgent.toLowerCase(),
28 // Save a reference to the core toString method
29 toString = Object.prototype.toString;
31 // Expose jQuery to the global object
32 window.jQuery = window.$ = jQuery;
34 jQuery.fn = jQuery.prototype = {
35 init: function( selector, context ) {
38 // Handle $(""), $(null), or $(undefined)
44 // Handle $(DOMElement)
45 if ( selector.nodeType ) {
48 this.context = selector;
52 // Handle HTML strings
53 if ( typeof selector === "string" ) {
54 // Are we dealing with HTML string or an ID?
55 match = quickExpr.exec( selector );
57 // Verify a match, and that no context was specified for #id
58 if ( match && (match[1] || !context) ) {
60 // HANDLE: $(html) -> $(array)
62 selector = jQuery.clean( [ match[1] ], context );
66 elem = document.getElementById( match[3] );
68 // Handle the case where IE and Opera return items
69 // by name instead of ID
70 if ( elem && elem.id !== match[3] ) {
71 return rootjQuery.find( selector );
74 // Otherwise, we inject the element directly into the jQuery object
75 ret = jQuery( elem || null );
76 ret.context = document;
77 ret.selector = selector;
81 // HANDLE: $(expr, $(...))
82 } else if ( !context || context.jquery ) {
83 return (context || rootjQuery).find( selector );
85 // HANDLE: $(expr, context)
86 // (which is just equivalent to: $(context).find(expr)
88 return jQuery( context ).find( selector );
91 // HANDLE: $(function)
92 // Shortcut for document ready
93 } else if ( jQuery.isFunction( selector ) ) {
94 return rootjQuery.ready( selector );
97 // Make sure that old selector state is passed along
98 if ( selector.selector && selector.context ) {
99 this.selector = selector.selector;
100 this.context = selector.context;
103 return this.setArray(jQuery.isArray( selector ) ?
105 jQuery.makeArray(selector));
108 // Start with an empty selector
111 // The current version of jQuery being used
114 // The number of elements contained in the matched element set
119 // Get the Nth element in the matched element set OR
120 // Get the whole matched element set as a clean array
121 get: function( num ) {
124 // Return a 'clean' array
125 Array.prototype.slice.call( this ) :
127 // Return just the object
131 // Take an array of elements and push it onto the stack
132 // (returning the new matched element set)
133 pushStack: function( elems, name, selector ) {
134 // Build a new jQuery matched element set
135 var ret = jQuery( elems || null );
137 // Add the old object onto the stack (as a reference)
138 ret.prevObject = this;
140 ret.context = this.context;
142 if ( name === "find" ) {
143 ret.selector = this.selector + (this.selector ? " " : "") + selector;
145 ret.selector = this.selector + "." + name + "(" + selector + ")";
148 // Return the newly-formed element set
152 // Force the current matched set of elements to become
153 // the specified array of elements (destroying the stack in the process)
154 // You should use pushStack() in order to do this, but maintain the stack
155 setArray: function( elems ) {
156 // Resetting the length to 0, then using the native Array push
157 // is a super-fast way to populate an object with array-like properties
159 Array.prototype.push.apply( this, elems );
164 // Execute a callback for every element in the matched set.
165 // (You can seed the arguments with an array of args, but this is
166 // only used internally.)
167 each: function( callback, args ) {
168 return jQuery.each( this, callback, args );
171 // Determine the position of an element within
172 // the matched set of elements
173 index: function( elem ) {
174 if ( !elem || typeof elem === "string" ) {
175 return jQuery.inArray( this[0],
176 // If it receives a string, the selector is used
177 // If it receives nothing, the siblings are used
178 elem ? jQuery( elem ) : this.parent().children() );
180 // Locate the position of the desired element
181 return jQuery.inArray(
182 // If it receives a jQuery object, the first element is used
183 elem.jquery ? elem[0] : elem, this );
186 is: function( selector ) {
187 return !!selector && jQuery.multiFilter( selector, this ).length > 0;
190 // For internal use only.
191 // Behaves like an Array's method, not like a jQuery method.
197 // Give the init function the jQuery prototype for later instantiation
198 jQuery.fn.init.prototype = jQuery.fn;
200 jQuery.extend = jQuery.fn.extend = function() {
201 // copy reference to target object
202 var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options, name, src, copy;
204 // Handle a deep copy situation
205 if ( typeof target === "boolean" ) {
207 target = arguments[1] || {};
208 // skip the boolean and the target
212 // Handle case when target is a string or something (possible in deep copy)
213 if ( typeof target !== "object" && !jQuery.isFunction(target) ) {
217 // extend jQuery itself if only one argument is passed
218 if ( length === i ) {
223 for ( ; i < length; i++ ) {
224 // Only deal with non-null/undefined values
225 if ( (options = arguments[ i ]) != null ) {
226 // Extend the base object
227 for ( name in options ) {
228 src = target[ name ];
229 copy = options[ name ];
231 // Prevent never-ending loop
232 if ( target === copy ) {
236 // Recurse if we're merging object values
237 if ( deep && copy && typeof copy === "object" && !copy.nodeType ) {
238 target[ name ] = jQuery.extend( deep,
239 // Never move original objects, clone them
240 src || ( copy.length != null ? [ ] : { } ), copy );
242 // Don't bring in undefined values
243 } else if ( copy !== undefined ) {
244 target[ name ] = copy;
250 // Return the modified object
255 noConflict: function( deep ) {
259 window.jQuery = _jQuery;
265 // See test/unit/core.js for details concerning isFunction.
266 // Since version 1.3, DOM methods and functions like alert
267 // aren't supported. They return false on IE (#2968).
268 isFunction: function( obj ) {
269 return toString.call(obj) === "[object Function]";
272 isArray: function( obj ) {
273 return toString.call(obj) === "[object Array]";
276 // check if an element is in a (or is an) XML document
277 isXMLDoc: function( elem ) {
278 return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" ||
279 !!elem.ownerDocument && elem.ownerDocument.documentElement.nodeName !== "HTML";
282 // Evalulates a script in a global context
283 globalEval: function( data ) {
284 if ( data && /\S/.test(data) ) {
285 // Inspired by code by Andrea Giammarchi
286 // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
287 var head = document.getElementsByTagName("head")[0] || document.documentElement,
288 script = document.createElement("script");
290 script.type = "text/javascript";
291 if ( jQuery.support.scriptEval ) {
292 script.appendChild( document.createTextNode( data ) );
297 // Use insertBefore instead of appendChild to circumvent an IE6 bug.
298 // This arises when a base node is used (#2709).
299 head.insertBefore( script, head.firstChild );
300 head.removeChild( script );
304 nodeName: function( elem, name ) {
305 return elem.nodeName && elem.nodeName.toUpperCase() === name.toUpperCase();
308 // args is for internal usage only
309 each: function( object, callback, args ) {
311 length = object.length,
312 isObj = length === undefined || jQuery.isFunction(object);
316 for ( name in object ) {
317 if ( callback.apply( object[ name ], args ) === false ) {
322 for ( ; i < length; ) {
323 if ( callback.apply( object[ i++ ], args ) === false ) {
329 // A special, fast, case for the most common use of each
332 for ( name in object ) {
333 if ( callback.call( object[ name ], name, object[ name ] ) === false ) {
338 for ( var value = object[0];
339 i < length && callback.call( value, i, value ) !== false; value = object[++i] ) {}
346 trim: function( text ) {
347 return (text || "").replace( /^\s+|\s+$/g, "" );
350 makeArray: function( array ) {
353 if ( array != null ) {
356 // The window, strings (and functions) also have 'length'
357 if ( i == null || typeof array === "string" || jQuery.isFunction(array) || array.setInterval ) {
369 inArray: function( elem, array ) {
370 for ( var i = 0, length = array.length; i < length; i++ ) {
371 if ( array[ i ] === elem ) {
379 merge: function( first, second ) {
380 // We have to loop this way because IE & Opera overwrite the length
381 // expando of getElementsByTagName
382 var i = 0, elem, pos = first.length;
384 // Also, we need to make sure that the correct elements are being returned
385 // (IE returns comment nodes in a '*' query)
386 if ( !jQuery.support.getAll ) {
387 while ( (elem = second[ i++ ]) != null ) {
388 if ( elem.nodeType !== 8 ) {
389 first[ pos++ ] = elem;
394 while ( (elem = second[ i++ ]) != null ) {
395 first[ pos++ ] = elem;
402 unique: function( array ) {
403 var ret = [], done = {}, id;
406 for ( var i = 0, length = array.length; i < length; i++ ) {
407 id = jQuery.data( array[ i ] );
411 ret.push( array[ i ] );
421 grep: function( elems, callback, inv ) {
424 // Go through the array, only saving the items
425 // that pass the validator function
426 for ( var i = 0, length = elems.length; i < length; i++ ) {
427 if ( !inv !== !callback( elems[ i ], i ) ) {
428 ret.push( elems[ i ] );
435 map: function( elems, callback ) {
438 // Go through the array, translating each of the items to their
439 // new value (or values).
440 for ( var i = 0, length = elems.length; i < length; i++ ) {
441 value = callback( elems[ i ], i );
443 if ( value != null ) {
444 ret[ ret.length ] = value;
448 return ret.concat.apply( [], ret );
451 // Use of jQuery.browser is deprecated.
452 // It's included for backwards compatibility and plugins,
453 // although they should work to migrate away.
455 version: (userAgent.match( /.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/ ) || [0,'0'])[1],
456 safari: /webkit/.test( userAgent ),
457 opera: /opera/.test( userAgent ),
458 msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),
459 mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent )
463 // All jQuery objects should point back to these
464 rootjQuery = jQuery(document);
466 function evalScript( i, elem ) {
474 jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
477 if ( elem.parentNode ) {
478 elem.parentNode.removeChild( elem );
483 return (new Date).getTime();