src/core.js

   1 var jQuery = (function() {
   2
   3 // Define a local copy of jQuery
   4 var jQuery = function( selector, context ) {
   5                 // The jQuery object is actually just the init constructor 'enhanced'
   6                 return new jQuery.fn.init( selector, context, rootjQuery );
   7         },
   8
   9         // Map over jQuery in case of overwrite
  10         _jQuery = window.jQuery,
  11
  12         // Map over the $ in case of overwrite
  13         _$ = window.$,
  14
  15         // A central reference to the root jQuery(document)
  16         rootjQuery,
  17
  18         // A simple way to check for HTML strings or ID strings
  19         // (both of which we optimize for)
  20         quickExpr = /^(?:[^<]*(<[\w\W]+>)[^>]*$|#([\w\-]+)$)/,
  21
  22         // Check if a string has a non-whitespace character in it
  23         rnotwhite = /\S/,
  24
  25         // Used for trimming whitespace
  26         trimLeft = /^\s+/,
  27         trimRight = /\s+$/,
  28
  29         // Check for digits
  30         rdigit = /\d/,
  31
  32         // Match a standalone tag
  33         rsingleTag = /^<(\w+)\s*\/?>(?:<\/\1>)?$/,
  34
  35         // JSON RegExp
  36         rvalidchars = /^[\],:{}\s]*$/,
  37         rvalidescape = /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g,
  38         rvalidtokens = /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g,
  39         rvalidbraces = /(?:^|:|,)(?:\s*\[)+/g,
  40
  41         // Useragent RegExp
  42         rwebkit = /(webkit)[ \/]([\w.]+)/,
  43         ropera = /(opera)(?:.*version)?[ \/]([\w.]+)/,
  44         rmsie = /(msie) ([\w.]+)/,
  45         rmozilla = /(mozilla)(?:.*? rv:([\w.]+))?/,
  46
  47         // Keep a UserAgent string for use with jQuery.browser
  48         userAgent = navigator.userAgent,
  49
  50         // For matching the engine and version of the browser
  51         browserMatch,
  52
  53         // Has the ready events already been bound?
  54         readyBound = false,
  55
  56         // The deferred used on DOM ready
  57         readyList,
  58
  59         // Promise methods
  60         promiseMethods = "then done fail isResolved isRejected promise".split( " " ),
  61
  62         // The ready event handler
  63         DOMContentLoaded,
  64
  65         // Save a reference to some core methods
  66         toString = Object.prototype.toString,
  67         hasOwn = Object.prototype.hasOwnProperty,
  68         push = Array.prototype.push,
  69         slice = Array.prototype.slice,
  70         trim = String.prototype.trim,
  71         indexOf = Array.prototype.indexOf,
  72
  73         // [[Class]] -> type pairs
  74         class2type = {};
  75
  76 jQuery.fn = jQuery.prototype = {
  77         constructor: jQuery,
  78         init: function( selector, context, rootjQuery ) {
  79                 var match, elem, ret, doc;
  80
  81                 // Handle $(""), $(null), or $(undefined)
  82                 if ( !selector ) {
  83                         return this;
  84                 }
  85
  86                 // Handle $(DOMElement)
  87                 if ( selector.nodeType ) {
  88                         this.context = this[0] = selector;
  89                         this.length = 1;
  90                         return this;
  91                 }
  92
  93                 // The body element only exists once, optimize finding it
  94                 if ( selector === "body" && !context && document.body ) {
  95                         this.context = document;
  96                         this[0] = document.body;
  97                         this.selector = "body";
  98                         this.length = 1;
  99                         return this;
 100                 }
 101
 102                 // Handle HTML strings
 103                 if ( typeof selector === "string" ) {
 104                         // Are we dealing with HTML string or an ID?
 105                         match = quickExpr.exec( selector );
 106
 107                         // Verify a match, and that no context was specified for #id
 108                         if ( match && (match[1] || !context) ) {
 109
 110                                 // HANDLE: $(html) -> $(array)
 111                                 if ( match[1] ) {
 112                                         context = context instanceof jQuery ? context[0] : context;
 113                                         doc = (context ? context.ownerDocument || context : document);
 114
 115                                         // If a single string is passed in and it's a single tag
 116                                         // just do a createElement and skip the rest
 117                                         ret = rsingleTag.exec( selector );
 118
 119                                         if ( ret ) {
 120                                                 if ( jQuery.isPlainObject( context ) ) {
 121                                                         selector = [ document.createElement( ret[1] ) ];
 122                                                         jQuery.fn.attr.call( selector, context, true );
 123
 124                                                 } else {
 125                                                         selector = [ doc.createElement( ret[1] ) ];
 126                                                 }
 127
 128                                         } else {
 129                                                 ret = jQuery.buildFragment( [ match[1] ], [ doc ] );
 130                                                 selector = (ret.cacheable ? jQuery.clone(ret.fragment) : ret.fragment).childNodes;
 131                                         }
 132
 133                                         return jQuery.merge( this, selector );
 134
 135                                 // HANDLE: $("#id")
 136                                 } else {
 137                                         elem = document.getElementById( match[2] );
 138
 139                                         // Check parentNode to catch when Blackberry 4.6 returns
 140                                         // nodes that are no longer in the document #6963
 141                                         if ( elem && elem.parentNode ) {
 142                                                 // Handle the case where IE and Opera return items
 143                                                 // by name instead of ID
 144                                                 if ( elem.id !== match[2] ) {
 145                                                         return rootjQuery.find( selector );
 146                                                 }
 147
 148                                                 // Otherwise, we inject the element directly into the jQuery object
 149                                                 this.length = 1;
 150                                                 this[0] = elem;
 151                                         }
 152
 153                                         this.context = document;
 154                                         this.selector = selector;
 155                                         return this;
 156                                 }
 157
 158                         // HANDLE: $(expr, $(...))
 159                         } else if ( !context || context.jquery ) {
 160                                 return (context || rootjQuery).find( selector );
 161
 162                         // HANDLE: $(expr, context)
 163                         // (which is just equivalent to: $(context).find(expr)
 164                         } else {
 165                                 return this.constructor( context ).find( selector );
 166                         }
 167
 168                 // HANDLE: $(function)
 169                 // Shortcut for document ready
 170                 } else if ( jQuery.isFunction( selector ) ) {
 171                         return rootjQuery.ready( selector );
 172                 }
 173
 174                 if (selector.selector !== undefined) {
 175                         this.selector = selector.selector;
 176                         this.context = selector.context;
 177                 }
 178
 179                 return jQuery.makeArray( selector, this );
 180         },
 181
 182         // Start with an empty selector
 183         selector: "",
 184
 185         // The current version of jQuery being used
 186         jquery: "@VERSION",
 187
 188         // The default length of a jQuery object is 0
 189         length: 0,
 190
 191         // The number of elements contained in the matched element set
 192         size: function() {
 193                 return this.length;
 194         },
 195
 196         toArray: function() {
 197                 return slice.call( this, 0 );
 198         },
 199
 200         // Get the Nth element in the matched element set OR
 201         // Get the whole matched element set as a clean array
 202         get: function( num ) {
 203                 return num == null ?
 204
 205                         // Return a 'clean' array
 206                         this.toArray() :
 207
 208                         // Return just the object
 209                         ( num < 0 ? this[ this.length + num ] : this[ num ] );
 210         },
 211
 212         // Take an array of elements and push it onto the stack
 213         // (returning the new matched element set)
 214         pushStack: function( elems, name, selector ) {
 215                 // Build a new jQuery matched element set
 216                 var ret = this.constructor();
 217
 218                 if ( jQuery.isArray( elems ) ) {
 219                         push.apply( ret, elems );
 220
 221                 } else {
 222                         jQuery.merge( ret, elems );
 223                 }
 224
 225                 // Add the old object onto the stack (as a reference)
 226                 ret.prevObject = this;
 227
 228                 ret.context = this.context;
 229
 230                 if ( name === "find" ) {
 231                         ret.selector = this.selector + (this.selector ? " " : "") + selector;
 232                 } else if ( name ) {
 233                         ret.selector = this.selector + "." + name + "(" + selector + ")";
 234                 }
 235
 236                 // Return the newly-formed element set
 237                 return ret;
 238         },
 239
 240         // Execute a callback for every element in the matched set.
 241         // (You can seed the arguments with an array of args, but this is
 242         // only used internally.)
 243         each: function( callback, args ) {
 244                 return jQuery.each( this, callback, args );
 245         },
 246
 247         ready: function( fn ) {
 248                 // Attach the listeners
 249                 jQuery.bindReady();
 250
 251                 // Add the callback
 252                 readyList.done( fn );
 253
 254                 return this;
 255         },
 256
 257         eq: function( i ) {
 258                 return i === -1 ?
 259                         this.slice( i ) :
 260                         this.slice( i, +i + 1 );
 261         },
 262
 263         first: function() {
 264                 return this.eq( 0 );
 265         },
 266
 267         last: function() {
 268                 return this.eq( -1 );
 269         },
 270
 271         slice: function() {
 272                 return this.pushStack( slice.apply( this, arguments ),
 273                         "slice", slice.call(arguments).join(",") );
 274         },
 275
 276         map: function( callback ) {
 277                 return this.pushStack( jQuery.map(this, function( elem, i ) {
 278                         return callback.call( elem, i, elem );
 279                 }));
 280         },
 281
 282         end: function() {
 283                 return this.prevObject || this.constructor(null);
 284         },
 285
 286         // For internal use only.
 287         // Behaves like an Array's method, not like a jQuery method.
 288         push: push,
 289         sort: [].sort,
 290         splice: [].splice
 291 };
 292
 293 // Give the init function the jQuery prototype for later instantiation
 294 jQuery.fn.init.prototype = jQuery.fn;
 295
 296 jQuery.extend = jQuery.fn.extend = function() {
 297         var options, name, src, copy, copyIsArray, clone,
 298                 target = arguments[0] || {},
 299                 i = 1,
 300                 length = arguments.length,
 301                 deep = false;
 302
 303         // Handle a deep copy situation
 304         if ( typeof target === "boolean" ) {
 305                 deep = target;
 306                 target = arguments[1] || {};
 307                 // skip the boolean and the target
 308                 i = 2;
 309         }
 310
 311         // Handle case when target is a string or something (possible in deep copy)
 312         if ( typeof target !== "object" && !jQuery.isFunction(target) ) {
 313                 target = {};
 314         }
 315
 316         // extend jQuery itself if only one argument is passed
 317         if ( length === i ) {
 318                 target = this;
 319                 --i;
 320         }
 321
 322         for ( ; i < length; i++ ) {
 323                 // Only deal with non-null/undefined values
 324                 if ( (options = arguments[ i ]) != null ) {
 325                         // Extend the base object
 326                         for ( name in options ) {
 327                                 src = target[ name ];
 328                                 copy = options[ name ];
 329
 330                                 // Prevent never-ending loop
 331                                 if ( target === copy ) {
 332                                         continue;
 333                                 }
 334
 335                                 // Recurse if we're merging plain objects or arrays
 336                                 if ( deep && copy && ( jQuery.isPlainObject(copy) || (copyIsArray = jQuery.isArray(copy)) ) ) {
 337                                         if ( copyIsArray ) {
 338                                                 copyIsArray = false;
 339                                                 clone = src && jQuery.isArray(src) ? src : [];
 340
 341                                         } else {
 342                                                 clone = src && jQuery.isPlainObject(src) ? src : {};
 343                                         }
 344
 345                                         // Never move original objects, clone them
 346                                         target[ name ] = jQuery.extend( deep, clone, copy );
 347
 348                                 // Don't bring in undefined values
 349                                 } else if ( copy !== undefined ) {
 350                                         target[ name ] = copy;
 351                                 }
 352                         }
 353                 }
 354         }
 355
 356         // Return the modified object
 357         return target;
 358 };
 359
 360 jQuery.extend({
 361         noConflict: function( deep ) {
 362                 window.$ = _$;
 363
 364                 if ( deep ) {
 365                         window.jQuery = _jQuery;
 366                 }
 367
 368                 return jQuery;
 369         },
 370
 371         // Is the DOM ready to be used? Set to true once it occurs.
 372         isReady: false,
 373
 374         // A counter to track how many items to wait for before
 375         // the ready event fires. See #6781
 376         readyWait: 1,
 377
 378         // Handle when the DOM is ready
 379         ready: function( wait ) {
 380                 // A third-party is pushing the ready event forwards
 381                 if ( wait === true ) {
 382                         jQuery.readyWait--;
 383                 }
 384
 385                 // Make sure that the DOM is not already loaded
 386                 if ( !jQuery.readyWait || (wait !== true && !jQuery.isReady) ) {
 387                         // Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
 388                         if ( !document.body ) {
 389                                 return setTimeout( jQuery.ready, 1 );
 390                         }
 391
 392                         // Remember that the DOM is ready
 393                         jQuery.isReady = true;
 394
 395                         // If a normal DOM Ready event fired, decrement, and wait if need be
 396                         if ( wait !== true && --jQuery.readyWait > 0 ) {
 397                                 return;
 398                         }
 399
 400                         // If there are functions bound, to execute
 401                         readyList.resolveWith( document, [ jQuery ] );
 402
 403                         // Trigger any bound ready events
 404                         if ( jQuery.fn.trigger ) {
 405                                 jQuery( document ).trigger( "ready" ).unbind( "ready" );
 406                         }
 407                 }
 408         },
 409
 410         bindReady: function() {
 411                 if ( readyBound ) {
 412                         return;
 413                 }
 414
 415                 readyBound = true;
 416
 417                 // Catch cases where $(document).ready() is called after the
 418                 // browser event has already occurred.
 419                 if ( document.readyState === "complete" ) {
 420                         // Handle it asynchronously to allow scripts the opportunity to delay ready
 421                         return setTimeout( jQuery.ready, 1 );
 422                 }
 423
 424                 // Mozilla, Opera and webkit nightlies currently support this event
 425                 if ( document.addEventListener ) {
 426                         // Use the handy event callback
 427                         document.addEventListener( "DOMContentLoaded", DOMContentLoaded, false );
 428
 429                         // A fallback to window.onload, that will always work
 430                         window.addEventListener( "load", jQuery.ready, false );
 431
 432                 // If IE event model is used
 433                 } else if ( document.attachEvent ) {
 434                         // ensure firing before onload,
 435                         // maybe late but safe also for iframes
 436                         document.attachEvent("onreadystatechange", DOMContentLoaded);
 437
 438                         // A fallback to window.onload, that will always work
 439                         window.attachEvent( "onload", jQuery.ready );
 440
 441                         // If IE and not a frame
 442                         // continually check to see if the document is ready
 443                         var toplevel = false;
 444
 445                         try {
 446                                 toplevel = window.frameElement == null;
 447                         } catch(e) {}
 448
 449                         if ( document.documentElement.doScroll && toplevel ) {
 450                                 doScrollCheck();
 451                         }
 452                 }
 453         },
 454
 455         // See test/unit/core.js for details concerning isFunction.
 456         // Since version 1.3, DOM methods and functions like alert
 457         // aren't supported. They return false on IE (#2968).
 458         isFunction: function( obj ) {
 459                 return jQuery.type(obj) === "function";
 460         },
 461
 462         isArray: Array.isArray || function( obj ) {
 463                 return jQuery.type(obj) === "array";
 464         },
 465
 466         // A crude way of determining if an object is a window
 467         isWindow: function( obj ) {
 468                 return obj && typeof obj === "object" && "setInterval" in obj;
 469         },
 470
 471         isNaN: function( obj ) {
 472                 return obj == null || !rdigit.test( obj ) || isNaN( obj );
 473         },
 474
 475         type: function( obj ) {
 476                 return obj == null ?
 477                         String( obj ) :
 478                         class2type[ toString.call(obj) ] || "object";
 479         },
 480
 481         isPlainObject: function( obj ) {
 482                 // Must be an Object.
 483                 // Because of IE, we also have to check the presence of the constructor property.
 484                 // Make sure that DOM nodes and window objects don't pass through, as well
 485                 if ( !obj || jQuery.type(obj) !== "object" || obj.nodeType || jQuery.isWindow( obj ) ) {
 486                         return false;
 487                 }
 488
 489                 // Not own constructor property must be Object
 490                 if ( obj.constructor &&
 491                         !hasOwn.call(obj, "constructor") &&
 492                         !hasOwn.call(obj.constructor.prototype, "isPrototypeOf") ) {
 493                         return false;
 494                 }
 495
 496                 // Own properties are enumerated firstly, so to speed up,
 497                 // if last one is own, then all properties are own.
 498
 499                 var key;
 500                 for ( key in obj ) {}
 501
 502                 return key === undefined || hasOwn.call( obj, key );
 503         },
 504
 505         isEmptyObject: function( obj ) {
 506                 for ( var name in obj ) {
 507                         return false;
 508                 }
 509                 return true;
 510         },
 511
 512         error: function( msg ) {
 513                 throw msg;
 514         },
 515
 516         parseJSON: function( data ) {
 517                 if ( typeof data !== "string" || !data ) {
 518                         return null;
 519                 }
 520
 521                 // Make sure leading/trailing whitespace is removed (IE can't handle it)
 522                 data = jQuery.trim( data );
 523
 524                 // Make sure the incoming data is actual JSON
 525                 // Logic borrowed from http://json.org/json2.js
 526                 if ( rvalidchars.test(data.replace(rvalidescape, "@")
 527                         .replace(rvalidtokens, "]")
 528                         .replace(rvalidbraces, "")) ) {
 529
 530                         // Try to use the native JSON parser first
 531                         return window.JSON && window.JSON.parse ?
 532                                 window.JSON.parse( data ) :
 533                                 (new Function("return " + data))();
 534
 535                 } else {
 536                         jQuery.error( "Invalid JSON: " + data );
 537                 }
 538         },
 539
 540         // Cross-browser xml parsing
 541         // (xml & tmp used internally)
 542         parseXML: function( data , xml , tmp ) {
 543
 544                 if ( window.DOMParser ) { // Standard
 545                         tmp = new DOMParser();
 546                         xml = tmp.parseFromString( data , "text/xml" );
 547                 } else { // IE
 548                         xml = new ActiveXObject( "Microsoft.XMLDOM" );
 549                         xml.async = "false";
 550                         xml.loadXML( data );
 551                 }
 552
 553                 tmp = xml.documentElement;
 554
 555                 if ( ! tmp || ! tmp.nodeName || tmp.nodeName === "parsererror" ) {
 556                         jQuery.error( "Invalid XML: " + data );
 557                 }
 558
 559                 return xml;
 560         },
 561
 562         noop: function() {},
 563
 564         // Evalulates a script in a global context
 565         globalEval: function( data ) {
 566                 if ( data && rnotwhite.test(data) ) {
 567                         // Inspired by code by Andrea Giammarchi
 568                         // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
 569                         var head = document.head || document.getElementsByTagName( "head" )[0] || document.documentElement,
 570                                 script = document.createElement( "script" );
 571
 572                         if ( jQuery.support.scriptEval() ) {
 573                                 script.appendChild( document.createTextNode( data ) );
 574                         } else {
 575                                 script.text = data;
 576                         }
 577
 578                         // Use insertBefore instead of appendChild to circumvent an IE6 bug.
 579                         // This arises when a base node is used (#2709).
 580                         head.insertBefore( script, head.firstChild );
 581                         head.removeChild( script );
 582                 }
 583         },
 584
 585         nodeName: function( elem, name ) {
 586                 return elem.nodeName && elem.nodeName.toUpperCase() === name.toUpperCase();
 587         },
 588
 589         // args is for internal usage only
 590         each: function( object, callback, args ) {
 591                 var name, i = 0,
 592                         length = object.length,
 593                         isObj = length === undefined || jQuery.isFunction(object);
 594
 595                 if ( args ) {
 596                         if ( isObj ) {
 597                                 for ( name in object ) {
 598                                         if ( callback.apply( object[ name ], args ) === false ) {
 599                                                 break;
 600                                         }
 601                                 }
 602                         } else {
 603                                 for ( ; i < length; ) {
 604                                         if ( callback.apply( object[ i++ ], args ) === false ) {
 605                                                 break;
 606                                         }
 607                                 }
 608                         }
 609
 610                 // A special, fast, case for the most common use of each
 611                 } else {
 612                         if ( isObj ) {
 613                                 for ( name in object ) {
 614                                         if ( callback.call( object[ name ], name, object[ name ] ) === false ) {
 615                                                 break;
 616                                         }
 617                                 }
 618                         } else {
 619                                 for ( var value = object[0];
 620                                         i < length && callback.call( value, i, value ) !== false; value = object[++i] ) {}
 621                         }
 622                 }
 623
 624                 return object;
 625         },
 626
 627         // Use native String.trim function wherever possible
 628         trim: trim ?
 629                 function( text ) {
 630                         return text == null ?
 631                                 "" :
 632                                 trim.call( text );
 633                 } :
 634
 635                 // Otherwise use our own trimming functionality
 636                 function( text ) {
 637                         return text == null ?
 638                                 "" :
 639                                 text.toString().replace( trimLeft, "" ).replace( trimRight, "" );
 640                 },
 641
 642         // results is for internal usage only
 643         makeArray: function( array, results ) {
 644                 var ret = results || [];
 645
 646                 if ( array != null ) {
 647                         // The window, strings (and functions) also have 'length'
 648                         // The extra typeof function check is to prevent crashes
 649                         // in Safari 2 (See: #3039)
 650                         // Tweaked logic slightly to handle Blackberry 4.7 RegExp issues #6930
 651                         var type = jQuery.type(array);
 652
 653                         if ( array.length == null || type === "string" || type === "function" || type === "regexp" || jQuery.isWindow( array ) ) {
 654                                 push.call( ret, array );
 655                         } else {
 656                                 jQuery.merge( ret, array );
 657                         }
 658                 }
 659
 660                 return ret;
 661         },
 662
 663         inArray: function( elem, array ) {
 664                 if ( array.indexOf ) {
 665                         return array.indexOf( elem );
 666                 }
 667
 668                 for ( var i = 0, length = array.length; i < length; i++ ) {
 669                         if ( array[ i ] === elem ) {
 670                                 return i;
 671                         }
 672                 }
 673
 674                 return -1;
 675         },
 676
 677         merge: function( first, second ) {
 678                 var i = first.length,
 679                         j = 0;
 680
 681                 if ( typeof second.length === "number" ) {
 682                         for ( var l = second.length; j < l; j++ ) {
 683                                 first[ i++ ] = second[ j ];
 684                         }
 685
 686                 } else {
 687                         while ( second[j] !== undefined ) {
 688                                 first[ i++ ] = second[ j++ ];
 689                         }
 690                 }
 691
 692                 first.length = i;
 693
 694                 return first;
 695         },
 696
 697         grep: function( elems, callback, inv ) {
 698                 var ret = [], retVal;
 699                 inv = !!inv;
 700
 701                 // Go through the array, only saving the items
 702                 // that pass the validator function
 703                 for ( var i = 0, length = elems.length; i < length; i++ ) {
 704                         retVal = !!callback( elems[ i ], i );
 705                         if ( inv !== retVal ) {
 706                                 ret.push( elems[ i ] );
 707                         }
 708                 }
 709
 710                 return ret;
 711         },
 712
 713         // arg is for internal usage only
 714         map: function( elems, callback, arg ) {
 715                 var ret = [], value;
 716
 717                 // Go through the array, translating each of the items to their
 718                 // new value (or values).
 719                 for ( var i = 0, length = elems.length; i < length; i++ ) {
 720                         value = callback( elems[ i ], i, arg );
 721
 722                         if ( value != null ) {
 723                                 ret[ ret.length ] = value;
 724                         }
 725                 }
 726
 727                 // Flatten any nested arrays
 728                 return ret.concat.apply( [], ret );
 729         },
 730
 731         // A global GUID counter for objects
 732         guid: 1,
 733
 734         proxy: function( fn, proxy, thisObject ) {
 735                 if ( arguments.length === 2 ) {
 736                         if ( typeof proxy === "string" ) {
 737                                 thisObject = fn;
 738                                 fn = thisObject[ proxy ];
 739                                 proxy = undefined;
 740
 741                         } else if ( proxy && !jQuery.isFunction( proxy ) ) {
 742                                 thisObject = proxy;
 743                                 proxy = undefined;
 744                         }
 745                 }
 746
 747                 if ( !proxy && fn ) {
 748                         proxy = function() {
 749                                 return fn.apply( thisObject || this, arguments );
 750                         };
 751                 }
 752
 753                 // Set the guid of unique handler to the same of original handler, so it can be removed
 754                 if ( fn ) {
 755                         proxy.guid = fn.guid = fn.guid || proxy.guid || jQuery.guid++;
 756                 }
 757
 758                 // So proxy can be declared as an argument
 759                 return proxy;
 760         },
 761
 762         // Mutifunctional method to get and set values to a collection
 763         // The value/s can be optionally by executed if its a function
 764         access: function( elems, key, value, exec, fn, pass ) {
 765                 var length = elems.length;
 766
 767                 // Setting many attributes
 768                 if ( typeof key === "object" ) {
 769                         for ( var k in key ) {
 770                                 jQuery.access( elems, k, key[k], exec, fn, value );
 771                         }
 772                         return elems;
 773                 }
 774
 775                 // Setting one attribute
 776                 if ( value !== undefined ) {
 777                         // Optionally, function values get executed if exec is true
 778                         exec = !pass && exec && jQuery.isFunction(value);
 779
 780                         for ( var i = 0; i < length; i++ ) {
 781                                 fn( elems[i], key, exec ? value.call( elems[i], i, fn( elems[i], key ) ) : value, pass );
 782                         }
 783
 784                         return elems;
 785                 }
 786
 787                 // Getting an attribute
 788                 return length ? fn( elems[0], key ) : undefined;
 789         },
 790
 791         now: function() {
 792                 return (new Date()).getTime();
 793         },
 794
 795         // Create a simple deferred (one callbacks list)
 796         _Deferred: function() {
 797                 var // callbacks list
 798                         callbacks = [],
 799                         // stored [ context , args ]
 800                         fired,
 801                         // to avoid firing when already doing so
 802                         firing,
 803                         // flag to know if the deferred has been cancelled
 804                         cancelled,
 805                         // the deferred itself
 806                         deferred  = {
 807
 808                                 // done( f1, f2, ...)
 809                                 done: function() {
 810                                         if ( !cancelled ) {
 811                                                 var args = arguments,
 812                                                         i,
 813                                                         length,
 814                                                         elem,
 815                                                         type,
 816                                                         _fired;
 817                                                 if ( fired ) {
 818                                                         _fired = fired;
 819                                                         fired = 0;
 820                                                 }
 821                                                 for ( i = 0, length = args.length; i < length; i++ ) {
 822                                                         elem = args[ i ];
 823                                                         type = jQuery.type( elem );
 824                                                         if ( type === "array" ) {
 825                                                                 deferred.done.apply( deferred, elem );
 826                                                         } else if ( type === "function" ) {
 827                                                                 callbacks.push( elem );
 828                                                         }
 829                                                 }
 830                                                 if ( _fired ) {
 831                                                         deferred.resolveWith( _fired[ 0 ], _fired[ 1 ] );
 832                                                 }
 833                                         }
 834                                         return this;
 835                                 },
 836
 837                                 // resolve with given context and args
 838                                 resolveWith: function( context, args ) {
 839                                         if ( !cancelled && !fired && !firing ) {
 840                                                 firing = 1;
 841                                                 try {
 842                                                         while( callbacks[ 0 ] ) {
 843                                                                 callbacks.shift().apply( context, args );
 844                                                         }
 845                                                 }
 846                                                 finally {
 847                                                         fired = [ context, args ];
 848                                                         firing = 0;
 849                                                 }
 850                                         }
 851                                         return this;
 852                                 },
 853
 854                                 // resolve with this as context and given arguments
 855                                 resolve: function() {
 856                                         deferred.resolveWith( jQuery.isFunction( this.promise ) ? this.promise() : this, arguments );
 857                                         return this;
 858                                 },
 859
 860                                 // Has this deferred been resolved?
 861                                 isResolved: function() {
 862                                         return !!( firing || fired );
 863                                 },
 864
 865                                 // Cancel
 866                                 cancel: function() {
 867                                         cancelled = 1;
 868                                         callbacks = [];
 869                                         return this;
 870                                 }
 871                         };
 872
 873                 return deferred;
 874         },
 875
 876         // Full fledged deferred (two callbacks list)
 877         Deferred: function( func ) {
 878                 var deferred = jQuery._Deferred(),
 879                         failDeferred = jQuery._Deferred(),
 880                         promise;
 881                 // Add errorDeferred methods, then and promise
 882                 jQuery.extend( deferred, {
 883                         then: function( doneCallbacks, failCallbacks ) {
 884                                 deferred.done( doneCallbacks ).fail( failCallbacks );
 885                                 return this;
 886                         },
 887                         fail: failDeferred.done,
 888                         rejectWith: failDeferred.resolveWith,
 889                         reject: failDeferred.resolve,
 890                         isRejected: failDeferred.isResolved,
 891                         // Get a promise for this deferred
 892                         // If obj is provided, the promise aspect is added to the object
 893                         promise: function( obj , i /* internal */ ) {
 894                                 if ( obj == null ) {
 895                                         if ( promise ) {
 896                                                 return promise;
 897                                         }
 898                                         promise = obj = {};
 899                                 }
 900                                 i = promiseMethods.length;
 901                                 while( i-- ) {
 902                                         obj[ promiseMethods[ i ] ] = deferred[ promiseMethods[ i ] ];
 903                                 }
 904                                 return obj;
 905                         }
 906                 } );
 907                 // Make sure only one callback list will be used
 908                 deferred.then( failDeferred.cancel, deferred.cancel );
 909                 // Unexpose cancel
 910                 delete deferred.cancel;
 911                 // Call given func if any
 912                 if ( func ) {
 913                         func.call( deferred, deferred );
 914                 }
 915                 return deferred;
 916         },
 917
 918         // Deferred helper
 919         when: function( object ) {
 920                 var args = arguments,
 921                         length = args.length,
 922                         deferred = length <= 1 && object && jQuery.isFunction( object.promise ) ?
 923                                 object :
 924                                 jQuery.Deferred(),
 925                         promise = deferred.promise(),
 926                         resolveArray;
 927
 928                 if ( length > 1 ) {
 929                         resolveArray = new Array( length );
 930                         jQuery.each( args, function( index, element ) {
 931                                 jQuery.when( element ).then( function( value ) {
 932                                         resolveArray[ index ] = arguments.length > 1 ? slice.call( arguments, 0 ) : value;
 933                                         if( ! --length ) {
 934                                                 deferred.resolveWith( promise, resolveArray );
 935                                         }
 936                                 }, deferred.reject );
 937                         } );
 938                 } else if ( deferred !== object ) {
 939                         deferred.resolve( object );
 940                 }
 941                 return promise;
 942         },
 943
 944         // Use of jQuery.browser is frowned upon.
 945         // More details: http://docs.jquery.com/Utilities/jQuery.browser
 946         uaMatch: function( ua ) {
 947                 ua = ua.toLowerCase();
 948
 949                 var match = rwebkit.exec( ua ) ||
 950                         ropera.exec( ua ) ||
 951                         rmsie.exec( ua ) ||
 952                         ua.indexOf("compatible") < 0 && rmozilla.exec( ua ) ||
 953                         [];
 954
 955                 return { browser: match[1] || "", version: match[2] || "0" };
 956         },
 957
 958         sub: function() {
 959                 function jQuerySubclass( selector, context ) {
 960                         return new jQuerySubclass.fn.init( selector, context );
 961                 }
 962                 jQuery.extend( true, jQuerySubclass, this );
 963                 jQuerySubclass.superclass = this;
 964                 jQuerySubclass.fn = jQuerySubclass.prototype = this();
 965                 jQuerySubclass.fn.constructor = jQuerySubclass;
 966                 jQuerySubclass.subclass = this.subclass;
 967                 jQuerySubclass.fn.init = function init( selector, context ) {
 968                         if ( context && context instanceof jQuery && !(context instanceof jQuerySubclass) ) {
 969                                 context = jQuerySubclass(context);
 970                         }
 971
 972                         return jQuery.fn.init.call( this, selector, context, rootjQuerySubclass );
 973                 };
 974                 jQuerySubclass.fn.init.prototype = jQuerySubclass.fn;
 975                 var rootjQuerySubclass = jQuerySubclass(document);
 976                 return jQuerySubclass;
 977         },
 978
 979         browser: {}
 980 });
 981
 982 // Create readyList deferred
 983 readyList = jQuery._Deferred();
 984
 985 // Populate the class2type map
 986 jQuery.each("Boolean Number String Function Array Date RegExp Object".split(" "), function(i, name) {
 987         class2type[ "[object " + name + "]" ] = name.toLowerCase();
 988 });
 989
 990 browserMatch = jQuery.uaMatch( userAgent );
 991 if ( browserMatch.browser ) {
 992         jQuery.browser[ browserMatch.browser ] = true;
 993         jQuery.browser.version = browserMatch.version;
 994 }
 995
 996 // Deprecated, use jQuery.browser.webkit instead
 997 if ( jQuery.browser.webkit ) {
 998         jQuery.browser.safari = true;
 999 }
1000
1001 if ( indexOf ) {
1002         jQuery.inArray = function( elem, array ) {
1003                 return indexOf.call( array, elem );
1004         };
1005 }
1006
1007 // IE doesn't match non-breaking spaces with \s
1008 if ( rnotwhite.test( "\xA0" ) ) {
1009         trimLeft = /^[\s\xA0]+/;
1010         trimRight = /[\s\xA0]+$/;
1011 }
1012
1013 // All jQuery objects should point back to these
1014 rootjQuery = jQuery(document);
1015
1016 // Cleanup functions for the document ready method
1017 if ( document.addEventListener ) {
1018         DOMContentLoaded = function() {
1019                 document.removeEventListener( "DOMContentLoaded", DOMContentLoaded, false );
1020                 jQuery.ready();
1021         };
1022
1023 } else if ( document.attachEvent ) {
1024         DOMContentLoaded = function() {
1025                 // Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
1026                 if ( document.readyState === "complete" ) {
1027                         document.detachEvent( "onreadystatechange", DOMContentLoaded );
1028                         jQuery.ready();
1029                 }
1030         };
1031 }
1032
1033 // The DOM ready check for Internet Explorer
1034 function doScrollCheck() {
1035         if ( jQuery.isReady ) {
1036                 return;
1037         }
1038
1039         try {
1040                 // If IE is used, use the trick by Diego Perini
1041                 // http://javascript.nwbox.com/IEContentLoaded/
1042                 document.documentElement.doScroll("left");
1043         } catch(e) {
1044                 setTimeout( doScrollCheck, 1 );
1045                 return;
1046         }
1047
1048         // and execute any waiting functions
1049         jQuery.ready();
1050 }
1051
1052 // Expose jQuery to the global object
1053 return jQuery;
1054
1055 })();