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