X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Fcore.js;h=edd108906c9721b6eced51eb9809d67e9e597ab5;hb=8e53f7b5d6716e60d8c8ea7e167f2b187aae9d89;hp=9c35261524fd8a718d05fb66324b78ae97e5240c;hpb=7c04a64016c1f295dfdf4e731f693f8400a987bc;p=jquery.git diff --git a/src/core.js b/src/core.js index 9c35261..edd1089 100644 --- a/src/core.js +++ b/src/core.js @@ -1,71 +1,132 @@ -var - // Will speed up references to window, and allows munging its name. - window = this, - // Will speed up references to undefined, and allows munging its name. - undefined, +// Define a local copy of jQuery +var jQuery = function( selector, context ) { + // The jQuery object is actually just the init constructor 'enhanced' + return new jQuery.fn.init( selector, context ); + }, + // Map over jQuery in case of overwrite _jQuery = window.jQuery, + // Map over the $ in case of overwrite _$ = window.$, - jQuery = window.jQuery = window.$ = function( selector, context ) { - // The jQuery object is actually just the init constructor 'enhanced' - return selector === undefined ? - rootjQuery : - new jQuery.fn.init( selector, context ); - }, + // Use the correct document accordingly with window argument (sandbox) + document = window.document, + + // A central reference to the root jQuery(document) + rootjQuery, // A simple way to check for HTML strings or ID strings // (both of which we optimize for) - quickExpr = /^[^<]*(<(.|\s)+>)[^>]*$|^#([\w-]+)$/, + quickExpr = /^[^<]*(<[\w\W]+>)[^>]*$|^#([\w-]+)$/, + // Is it a simple selector - isSimple = /^.[^:#\[\.,]*$/; + isSimple = /^.[^:#\[\.,]*$/, + + // Check if a string has a non-whitespace character in it + rnotwhite = /\S/, + + // Used for trimming whitespace + rtrim = /^(\s|\u00A0)+|(\s|\u00A0)+$/g, + + // Match a standalone tag + rsingleTag = /^<(\w+)\s*\/?>(?:<\/\1>)?$/, + + // Keep a UserAgent string for use with jQuery.browser + userAgent = navigator.userAgent, + + // For matching the engine and version of the browser + browserMatch, + + // Has the ready events already been bound? + readyBound = false, + + // The functions to execute on DOM ready + readyList = [], + + // The ready event handler + DOMContentLoaded, + + // Save a reference to some core methods + toString = Object.prototype.toString, + hasOwnProperty = Object.prototype.hasOwnProperty, + push = Array.prototype.push, + slice = Array.prototype.slice, + indexOf = Array.prototype.indexOf; jQuery.fn = jQuery.prototype = { init: function( selector, context ) { - // Handle $("") or $(null) + var match, elem, ret, doc; + + // Handle $(""), $(null), or $(undefined) if ( !selector ) { - this.length = 0; return this; } // Handle $(DOMElement) if ( selector.nodeType ) { - this[0] = selector; + this.context = this[0] = selector; this.length = 1; - this.context = selector; return this; } // Handle HTML strings if ( typeof selector === "string" ) { // Are we dealing with HTML string or an ID? - var match = quickExpr.exec( selector ); + match = quickExpr.exec( selector ); // Verify a match, and that no context was specified for #id if ( match && (match[1] || !context) ) { // HANDLE: $(html) -> $(array) if ( match[1] ) { - selector = jQuery.clean( [ match[1] ], context ); + doc = (context ? context.ownerDocument || context : document); + + // If a single string is passed in and it's a single tag + // just do a createElement and skip the rest + ret = rsingleTag.exec( selector ); + + if ( ret ) { + if ( jQuery.isPlainObject( context ) ) { + selector = [ document.createElement( ret[1] ) ]; + jQuery.fn.attr.call( selector, context, true ); + + } else { + selector = [ doc.createElement( ret[1] ) ]; + } + + } else { + ret = buildFragment( [ match[1] ], [ doc ] ); + selector = (ret.cacheable ? ret.fragment.cloneNode(true) : ret.fragment).childNodes; + } // HANDLE: $("#id") } else { - var elem = document.getElementById( match[3] ); - - // Handle the case where IE and Opera return items - // by name instead of ID - if ( elem && elem.id != match[3] ) { - return rootjQuery.find( selector ); + elem = document.getElementById( match[2] ); + + if ( elem ) { + // Handle the case where IE and Opera return items + // by name instead of ID + if ( elem.id !== match[2] ) { + return rootjQuery.find( selector ); + } + + // Otherwise, we inject the element directly into the jQuery object + this.length = 1; + this[0] = elem; } - // Otherwise, we inject the element directly into the jQuery object - var ret = jQuery( elem || null ); - ret.context = document; - ret.selector = selector; - return ret; + this.context = document; + this.selector = selector; + return this; } + // HANDLE: $("TAG") + } else if ( !context && /^\w+$/.test( selector ) ) { + this.selector = selector; + this.context = document; + selector = document.getElementsByTagName( selector ); + // HANDLE: $(expr, $(...)) } else if ( !context || context.jquery ) { return (context || rootjQuery).find( selector ); @@ -82,15 +143,14 @@ jQuery.fn = jQuery.prototype = { return rootjQuery.ready( selector ); } - // Make sure that old selector state is passed along - if ( selector.selector && selector.context ) { + if (selector.selector !== undefined) { this.selector = selector.selector; this.context = selector.context; } - return this.setArray(jQuery.isArray( selector ) ? - selector : - jQuery.makeArray(selector)); + return jQuery.isArray( selector ) ? + this.setArray( selector ) : + jQuery.makeArray( selector, this ); }, // Start with an empty selector @@ -99,21 +159,28 @@ jQuery.fn = jQuery.prototype = { // The current version of jQuery being used jquery: "@VERSION", + // The default length of a jQuery object is 0 + length: 0, + // The number of elements contained in the matched element set size: function() { return this.length; }, + toArray: function() { + return slice.call( this, 0 ); + }, + // Get the Nth element in the matched element set OR // Get the whole matched element set as a clean array get: function( num ) { - return num === undefined ? + return num == null ? // Return a 'clean' array - Array.prototype.slice.call( this ) : + this.toArray() : // Return just the object - this[ num ]; + ( num < 0 ? this.slice(num)[ 0 ] : this[ num ] ); }, // Take an array of elements and push it onto the stack @@ -127,10 +194,11 @@ jQuery.fn = jQuery.prototype = { ret.context = this.context; - if ( name === "find" ) + if ( name === "find" ) { ret.selector = this.selector + (this.selector ? " " : "") + selector; - else if ( name ) + } else if ( name ) { ret.selector = this.selector + "." + name + "(" + selector + ")"; + } // Return the newly-formed element set return ret; @@ -143,7 +211,7 @@ jQuery.fn = jQuery.prototype = { // Resetting the length to 0, then using the native Array push // is a super-fast way to populate an object with array-like properties this.length = 0; - Array.prototype.push.apply( this, elems ); + push.apply( this, elems ); return this; }, @@ -154,24 +222,57 @@ jQuery.fn = jQuery.prototype = { each: function( callback, args ) { return jQuery.each( this, callback, args ); }, + + ready: function( fn ) { + // Attach the listeners + jQuery.bindReady(); + + // If the DOM is already ready + if ( jQuery.isReady ) { + // Execute the function immediately + fn.call( document, jQuery ); + + // Otherwise, remember the function for later + } else if ( readyList ) { + // Add the function to the wait list + readyList.push( fn ); + } + + return this; + }, + + eq: function( i ) { + return i === -1 ? + this.slice( i ) : + this.slice( i, +i + 1 ); + }, - // Determine the position of an element within - // the matched set of elements - index: function( elem ) { - // Locate the position of the desired element - return jQuery.inArray( - // If it receives a jQuery object, the first element is used - elem && elem.jquery ? elem[0] : elem - , this ); + first: function() { + return this.eq( 0 ); }, - is: function( selector ) { - return !!selector && jQuery.multiFilter( selector, this ).length > 0; + last: function() { + return this.eq( -1 ); + }, + + slice: function() { + return this.pushStack( slice.apply( this, arguments ), + "slice", slice.call(arguments).join(",") ); + }, + + map: function( callback ) { + return this.pushStack( jQuery.map(this, function( elem, i ) { + return callback.call( elem, i, elem ); + })); + }, + + end: function() { + return this.prevObject || jQuery(null); }, // For internal use only. // Behaves like an Array's method, not like a jQuery method. - push: [].push, + push: push, sort: [].sort, splice: [].splice }; @@ -179,28 +280,9 @@ jQuery.fn = jQuery.prototype = { // Give the init function the jQuery prototype for later instantiation jQuery.fn.init.prototype = jQuery.fn; -function evalScript( i, elem ) { - if ( elem.src ) - jQuery.ajax({ - url: elem.src, - async: false, - dataType: "script" - }); - - else - jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" ); - - if ( elem.parentNode ) - elem.parentNode.removeChild( elem ); -} - -function now(){ - return +new Date; -} - jQuery.extend = jQuery.fn.extend = function() { // copy reference to target object - var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options; + var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options, name, src, copy; // Handle a deep copy situation if ( typeof target === "boolean" ) { @@ -211,54 +293,137 @@ jQuery.extend = jQuery.fn.extend = function() { } // Handle case when target is a string or something (possible in deep copy) - if ( typeof target !== "object" && !jQuery.isFunction(target) ) + if ( typeof target !== "object" && !jQuery.isFunction(target) ) { target = {}; + } // extend jQuery itself if only one argument is passed - if ( length == i ) { + if ( length === i ) { target = this; --i; } - for ( ; i < length; i++ ) + for ( ; i < length; i++ ) { // Only deal with non-null/undefined values - if ( (options = arguments[ i ]) != null ) + if ( (options = arguments[ i ]) != null ) { // Extend the base object - for ( var name in options ) { - var src = target[ name ], copy = options[ name ]; + for ( name in options ) { + src = target[ name ]; + copy = options[ name ]; // Prevent never-ending loop - if ( target === copy ) + if ( target === copy ) { continue; + } + + // Recurse if we're merging object literal values or arrays + if ( deep && copy && ( jQuery.isPlainObject(copy) || jQuery.isArray(copy) ) ) { + var clone = src && ( jQuery.isPlainObject(src) || jQuery.isArray(src) ) ? src + : jQuery.isArray(copy) ? [] : {}; - // Recurse if we're merging object values - if ( deep && copy && typeof copy === "object" && !copy.nodeType ) - target[ name ] = jQuery.extend( deep, - // Never move original objects, clone them - src || ( copy.length != null ? [ ] : { } ) - , copy ); + // Never move original objects, clone them + target[ name ] = jQuery.extend( deep, clone, copy ); // Don't bring in undefined values - else if ( copy !== undefined ) + } else if ( copy !== undefined ) { target[ name ] = copy; - + } } + } + } // Return the modified object return target; }; -var toString = Object.prototype.toString; - jQuery.extend({ noConflict: function( deep ) { window.$ = _$; - if ( deep ) + if ( deep ) { window.jQuery = _jQuery; + } return jQuery; }, + + // Is the DOM ready to be used? Set to true once it occurs. + isReady: false, + + // Handle when the DOM is ready + ready: function() { + // Make sure that the DOM is not already loaded + if ( !jQuery.isReady ) { + // Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443). + if ( !document.body ) { + return setTimeout( jQuery.ready, 13 ); + } + + // Remember that the DOM is ready + jQuery.isReady = true; + + // If there are functions bound, to execute + if ( readyList ) { + // Execute all of them + var fn, i = 0; + while ( (fn = readyList[ i++ ]) ) { + fn.call( document, jQuery ); + } + + // Reset the list of functions + readyList = null; + } + + // Trigger any bound ready events + if ( jQuery.fn.triggerHandler ) { + jQuery( document ).triggerHandler( "ready" ); + } + } + }, + + bindReady: function() { + if ( readyBound ) { + return; + } + + readyBound = true; + + // Catch cases where $(document).ready() is called after the + // browser event has already occurred. + if ( document.readyState === "complete" ) { + return jQuery.ready(); + } + + // Mozilla, Opera and webkit nightlies currently support this event + if ( document.addEventListener ) { + // Use the handy event callback + document.addEventListener( "DOMContentLoaded", DOMContentLoaded, false ); + + // A fallback to window.onload, that will always work + window.addEventListener( "load", jQuery.ready, false ); + + // If IE event model is used + } else if ( document.attachEvent ) { + // ensure firing before onload, + // maybe late but safe also for iframes + document.attachEvent("onreadystatechange", DOMContentLoaded); + + // A fallback to window.onload, that will always work + window.attachEvent( "onload", jQuery.ready ); + + // If IE and not a frame + // continually check to see if the document is ready + var toplevel = false; + + try { + toplevel = window.frameElement == null; + } catch(e) {} + + if ( document.documentElement.doScroll && toplevel ) { + doScrollCheck(); + } + } + }, // See test/unit/core.js for details concerning isFunction. // Since version 1.3, DOM methods and functions like alert @@ -271,27 +436,56 @@ jQuery.extend({ return toString.call(obj) === "[object Array]"; }, - // check if an element is in a (or is an) XML document - isXMLDoc: function( elem ) { - return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" || - !!elem.ownerDocument && elem.ownerDocument.documentElement.nodeName !== "HTML"; + isPlainObject: function( obj ) { + // Must be an Object. + // Because of IE, we also have to check the presence of the constructor property. + // Make sure that DOM nodes and window objects don't pass through, as well + if ( !obj || toString.call(obj) !== "[object Object]" || obj.nodeType || obj.setInterval ) { + return false; + } + + // Not own constructor property must be Object + if ( obj.constructor + && !hasOwnProperty.call(obj, "constructor") + && !hasOwnProperty.call(obj.constructor.prototype, "isPrototypeOf") ) { + return false; + } + + // Own properties are enumerated firstly, so to speed up, + // if last one is own, then all properties are own. + + var key; + for ( key in obj ) {} + + return key === undefined || hasOwnProperty.call( obj, key ); }, + isEmptyObject: function( obj ) { + for ( var name in obj ) { + return false; + } + return true; + }, + + noop: function() {}, + // Evalulates a script in a global context globalEval: function( data ) { - if ( data && /\S/.test(data) ) { + if ( data && rnotwhite.test(data) ) { // Inspired by code by Andrea Giammarchi // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html var head = document.getElementsByTagName("head")[0] || document.documentElement, script = document.createElement("script"); script.type = "text/javascript"; - if ( jQuery.support.scriptEval ) + + if ( jQuery.support.scriptEval ) { script.appendChild( document.createTextNode( data ) ); - else + } else { script.text = data; + } - // Use insertBefore instead of appendChild to circumvent an IE6 bug. + // Use insertBefore instead of appendChild to circumvent an IE6 bug. // This arises when a base node is used (#2709). head.insertBefore( script, head.firstChild ); head.removeChild( script ); @@ -299,103 +493,99 @@ jQuery.extend({ }, nodeName: function( elem, name ) { - return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase(); + return elem.nodeName && elem.nodeName.toUpperCase() === name.toUpperCase(); }, // args is for internal usage only each: function( object, callback, args ) { - var name, i = 0, length = object.length; + var name, i = 0, + length = object.length, + isObj = length === undefined || jQuery.isFunction(object); if ( args ) { - if ( length === undefined ) { - for ( name in object ) - if ( callback.apply( object[ name ], args ) === false ) + if ( isObj ) { + for ( name in object ) { + if ( callback.apply( object[ name ], args ) === false ) { break; - } else - for ( ; i < length; ) - if ( callback.apply( object[ i++ ], args ) === false ) + } + } + } else { + for ( ; i < length; ) { + if ( callback.apply( object[ i++ ], args ) === false ) { break; + } + } + } // A special, fast, case for the most common use of each } else { - if ( length === undefined ) { - for ( name in object ) - if ( callback.call( object[ name ], name, object[ name ] ) === false ) + if ( isObj ) { + for ( name in object ) { + if ( callback.call( object[ name ], name, object[ name ] ) === false ) { break; - } else + } + } + } else { for ( var value = object[0]; - i < length && callback.call( value, i, value ) !== false; value = object[++i] ){} + i < length && callback.call( value, i, value ) !== false; value = object[++i] ) {} + } } return object; }, trim: function( text ) { - return (text || "").replace( /^\s+|\s+$/g, "" ); + return (text || "").replace( rtrim, "" ); }, - makeArray: function( array ) { - var ret = []; + // results is for internal usage only + makeArray: function( array, results ) { + var ret = results || []; - if( array != null ){ - var i = array.length; + if ( array != null ) { // The window, strings (and functions) also have 'length' - if( i == null || typeof array === "string" || jQuery.isFunction(array) || array.setInterval ) - ret[0] = array; - else - while( i ) - ret[--i] = array[i]; + // The extra typeof function check is to prevent crashes + // in Safari 2 (See: #3039) + if ( array.length == null || typeof array === "string" || jQuery.isFunction(array) || (typeof array !== "function" && array.setInterval) ) { + push.call( ret, array ); + } else { + jQuery.merge( ret, array ); + } } return ret; }, inArray: function( elem, array ) { - for ( var i = 0, length = array.length; i < length; i++ ) - // Use === because on IE, window == document - if ( array[ i ] === elem ) + if ( array.indexOf ) { + return array.indexOf( elem ); + } + + for ( var i = 0, length = array.length; i < length; i++ ) { + if ( array[ i ] === elem ) { return i; + } + } return -1; }, merge: function( first, second ) { - // We have to loop this way because IE & Opera overwrite the length - // expando of getElementsByTagName - var i = 0, elem, pos = first.length; - // Also, we need to make sure that the correct elements are being returned - // (IE returns comment nodes in a '*' query) - if ( !jQuery.support.getAll ) { - while ( (elem = second[ i++ ]) != null ) - if ( elem.nodeType != 8 ) - first[ pos++ ] = elem; - - } else - while ( (elem = second[ i++ ]) != null ) - first[ pos++ ] = elem; + var i = first.length, j = 0; - return first; - }, - - unique: function( array ) { - var ret = [], done = {}; - - try { - - for ( var i = 0, length = array.length; i < length; i++ ) { - var id = jQuery.data( array[ i ] ); - - if ( !done[ id ] ) { - done[ id ] = true; - ret.push( array[ i ] ); - } + if ( typeof second.length === "number" ) { + for ( var l = second.length; j < l; j++ ) { + first[ i++ ] = second[ j ]; + } + } else { + while ( second[j] !== undefined ) { + first[ i++ ] = second[ j++ ]; } - - } catch( e ) { - ret = array; } - return ret; + first.length = i; + + return first; }, grep: function( elems, callback, inv ) { @@ -403,43 +593,198 @@ jQuery.extend({ // Go through the array, only saving the items // that pass the validator function - for ( var i = 0, length = elems.length; i < length; i++ ) - if ( !inv != !callback( elems[ i ], i ) ) + for ( var i = 0, length = elems.length; i < length; i++ ) { + if ( !inv !== !callback( elems[ i ], i ) ) { ret.push( elems[ i ] ); + } + } return ret; }, - map: function( elems, callback ) { - var ret = []; + // arg is for internal usage only + map: function( elems, callback, arg ) { + var ret = [], value; // Go through the array, translating each of the items to their // new value (or values). for ( var i = 0, length = elems.length; i < length; i++ ) { - var value = callback( elems[ i ], i ); + value = callback( elems[ i ], i, arg ); - if ( value != null ) + if ( value != null ) { ret[ ret.length ] = value; + } } return ret.concat.apply( [], ret ); - } + }, + + // A global GUID counter for objects + guid: 1, + + proxy: function( fn, proxy, thisObject ) { + if ( arguments.length === 2 ) { + if ( typeof proxy === "string" ) { + thisObject = fn; + fn = thisObject[ proxy ]; + proxy = undefined; + + } else if ( proxy && !jQuery.isFunction( proxy ) ) { + thisObject = proxy; + proxy = undefined; + } + } + + if ( !proxy && fn ) { + proxy = function() { + return fn.apply( thisObject || this, arguments ); + }; + } + + // Set the guid of unique handler to the same of original handler, so it can be removed + if ( fn ) { + proxy.guid = fn.guid = fn.guid || proxy.guid || jQuery.guid++; + } + + // So proxy can be declared as an argument + return proxy; + }, + + // Use of jQuery.browser is frowned upon. + // More details: http://docs.jquery.com/Utilities/jQuery.browser + uaMatch: function( ua ) { + var ret = { browser: "" }; + + ua = ua.toLowerCase(); + + if ( /webkit/.test( ua ) ) { + ret = { browser: "webkit", version: /webkit[\/ ]([\w.]+)/ }; + + } else if ( /opera/.test( ua ) ) { + ret = { browser: "opera", version: /version/.test( ua ) ? /version[\/ ]([\w.]+)/ : /opera[\/ ]([\w.]+)/ }; + + } else if ( /msie/.test( ua ) ) { + ret = { browser: "msie", version: /msie ([\w.]+)/ }; + + } else if ( /mozilla/.test( ua ) && !/compatible/.test( ua ) ) { + ret = { browser: "mozilla", version: /rv:([\w.]+)/ }; + } + + ret.version = (ret.version && ret.version.exec( ua ) || [0, "0"])[1]; + + return ret; + }, + + browser: {} }); +browserMatch = jQuery.uaMatch( userAgent ); +if ( browserMatch.browser ) { + jQuery.browser[ browserMatch.browser ] = true; + jQuery.browser.version = browserMatch.version; +} + +// Deprecated, use jQuery.browser.webkit instead +if ( jQuery.browser.webkit ) { + jQuery.browser.safari = true; +} + +if ( indexOf ) { + jQuery.inArray = function( elem, array ) { + return indexOf.call( array, elem ); + }; +} + // All jQuery objects should point back to these -var rootjQuery = jQuery(document); - -// Use of jQuery.browser is deprecated. -// It's included for backwards compatibility and plugins, -// although they should work to migrate away. - -var userAgent = navigator.userAgent.toLowerCase(); - -// Figure out what browser is being used -jQuery.browser = { - version: (userAgent.match( /.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/ ) || [0,'0'])[1], - safari: /webkit/.test( userAgent ), - opera: /opera/.test( userAgent ), - msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ), - mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent ) -}; \ No newline at end of file +rootjQuery = jQuery(document); + +// Cleanup functions for the document ready method +if ( document.addEventListener ) { + DOMContentLoaded = function() { + document.removeEventListener( "DOMContentLoaded", DOMContentLoaded, false ); + jQuery.ready(); + }; + +} else if ( document.attachEvent ) { + DOMContentLoaded = function() { + // Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443). + if ( document.readyState === "complete" ) { + document.detachEvent( "onreadystatechange", DOMContentLoaded ); + jQuery.ready(); + } + }; +} + +// The DOM ready check for Internet Explorer +function doScrollCheck() { + if ( jQuery.isReady ) { + return; + } + + try { + // If IE is used, use the trick by Diego Perini + // http://javascript.nwbox.com/IEContentLoaded/ + document.documentElement.doScroll("left"); + } catch( error ) { + setTimeout( doScrollCheck, 1 ); + return; + } + + // and execute any waiting functions + jQuery.ready(); +} + +if ( indexOf ) { + jQuery.inArray = function( elem, array ) { + return indexOf.call( array, elem ); + }; +} + +function evalScript( i, elem ) { + if ( elem.src ) { + jQuery.ajax({ + url: elem.src, + async: false, + dataType: "script" + }); + } else { + jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" ); + } + + if ( elem.parentNode ) { + elem.parentNode.removeChild( elem ); + } +} + +// Mutifunctional method to get and set values to a collection +// The value/s can be optionally by executed if its a function +function access( elems, key, value, exec, fn, pass ) { + var length = elems.length; + + // Setting many attributes + if ( typeof key === "object" ) { + for ( var k in key ) { + access( elems, k, key[k], exec, fn, value ); + } + return elems; + } + + // Setting one attribute + if ( value !== undefined ) { + // Optionally, function values get executed if exec is true + exec = !pass && exec && jQuery.isFunction(value); + + for ( var i = 0; i < length; i++ ) { + fn( elems[i], key, exec ? value.call( elems[i], i, fn( elems[i], key ) ) : value, pass ); + } + + return elems; + } + + // Getting an attribute + return length ? fn( elems[0], key ) : null; +} + +function now() { + return (new Date).getTime(); +}