X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Fcore.js;h=e463ade017ed2b56f5ca993afd2e59025a2e61ea;hb=3e0cc815043c2425819743e907a0ce263a7ce164;hp=50ad55d94ff292629dff8874019b3e154fa3c444;hpb=396dd2127330a7ed742d1e9092af54b668c46e85;p=jquery.git diff --git a/src/core.js b/src/core.js index 50ad55d..e463ade 100644 --- a/src/core.js +++ b/src/core.js @@ -1,4 +1,4 @@ -(function() { +var jQuery = (function() { // Define a local copy of jQuery var jQuery = function( selector, context ) { @@ -12,38 +12,54 @@ var jQuery = function( selector, context ) { // Map over the $ in case of overwrite _$ = window.$, - // Use the correct document accordingly with window argument (sandbox) - //document = window.document, - // A central reference to the root jQuery(document) rootjQuery, // A simple way to check for HTML strings or ID strings // (both of which we optimize for) - quickExpr = /^[^<]*(<[\w\W]+>)[^>]*$|^#([\w\-]+)$/, + quickExpr = /^(?:[^<]*(<[\w\W]+>)[^>]*$|#([\w\-]+)$)/, // Is it a simple selector isSimple = /^.[^:#\[\.,]*$/, // Check if a string has a non-whitespace character in it rnotwhite = /\S/, + rwhite = /\s/, // Used for trimming whitespace trimLeft = /^\s+/, trimRight = /\s+$/, + // Check for non-word characters + rnonword = /\W/, + + // Check for digits + rdigit = /\d/, + // Match a standalone tag rsingleTag = /^<(\w+)\s*\/?>(?:<\/\1>)?$/, + // JSON RegExp + rvalidchars = /^[\],:{}\s]*$/, + rvalidescape = /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, + rvalidtokens = /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, + rvalidbraces = /(?:^|:|,)(?:\s*\[)+/g, + + // Useragent RegExp + rwebkit = /(webkit)[ \/]([\w.]+)/, + ropera = /(opera)(?:.*version)?[ \/]([\w.]+)/, + rmsie = /(msie) ([\w.]+)/, + rmozilla = /(mozilla)(?:.*? rv:([\w.]+))?/, + // 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 = [], @@ -56,7 +72,10 @@ var jQuery = function( selector, context ) { push = Array.prototype.push, slice = Array.prototype.slice, trim = String.prototype.trim, - indexOf = Array.prototype.indexOf; + indexOf = Array.prototype.indexOf, + + // [[Class]] -> type pairs + class2type = {}; jQuery.fn = jQuery.prototype = { init: function( selector, context ) { @@ -73,9 +92,9 @@ jQuery.fn = jQuery.prototype = { this.length = 1; return this; } - + // The body element only exists once, optimize finding it - if ( selector === "body" && !context ) { + if ( selector === "body" && !context && document.body ) { this.context = document; this[0] = document.body; this.selector = "body"; @@ -109,17 +128,19 @@ jQuery.fn = jQuery.prototype = { } } else { - ret = buildFragment( [ match[1] ], [ doc ] ); + ret = jQuery.buildFragment( [ match[1] ], [ doc ] ); selector = (ret.cacheable ? ret.fragment.cloneNode(true) : ret.fragment).childNodes; } - + return jQuery.merge( this, selector ); - + // HANDLE: $("#id") } else { elem = document.getElementById( match[2] ); - if ( elem ) { + // Check parentNode to catch when Blackberry 4.6 returns + // nodes that are no longer in the document #6963 + if ( elem && elem.parentNode ) { // Handle the case where IE and Opera return items // by name instead of ID if ( elem.id !== match[2] ) { @@ -137,7 +158,7 @@ jQuery.fn = jQuery.prototype = { } // HANDLE: $("TAG") - } else if ( !context && /^\w+$/.test( selector ) ) { + } else if ( !context && !rnonword.test( selector ) ) { this.selector = selector; this.context = document; selector = document.getElementsByTagName( selector ); @@ -194,7 +215,7 @@ jQuery.fn = jQuery.prototype = { this.toArray() : // Return just the object - ( num < 0 ? this.slice(num)[ 0 ] : this[ num ] ); + ( num < 0 ? this[ this.length + num ] : this[ num ] ); }, // Take an array of elements and push it onto the stack @@ -205,7 +226,7 @@ jQuery.fn = jQuery.prototype = { if ( jQuery.isArray( elems ) ) { push.apply( ret, elems ); - + } else { jQuery.merge( ret, elems ); } @@ -231,7 +252,7 @@ jQuery.fn = jQuery.prototype = { each: function( callback, args ) { return jQuery.each( this, callback, args ); }, - + ready: function( fn ) { // Attach the listeners jQuery.bindReady(); @@ -249,7 +270,7 @@ jQuery.fn = jQuery.prototype = { return this; }, - + eq: function( i ) { return i === -1 ? this.slice( i ) : @@ -274,7 +295,7 @@ jQuery.fn = jQuery.prototype = { return callback.call( elem, i, elem ); })); }, - + end: function() { return this.prevObject || jQuery(null); }, @@ -290,8 +311,11 @@ jQuery.fn = jQuery.prototype = { jQuery.fn.init.prototype = jQuery.fn; jQuery.extend = jQuery.fn.extend = function() { - // copy reference to target object - var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options, name, src, copy; + var options, name, src, copy, copyIsArray, clone, + target = arguments[0] || {}, + i = 1, + length = arguments.length, + deep = false; // Handle a deep copy situation if ( typeof target === "boolean" ) { @@ -325,10 +349,15 @@ jQuery.extend = jQuery.fn.extend = function() { 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 plain objects or arrays + if ( deep && copy && ( jQuery.isPlainObject(copy) || (copyIsArray = jQuery.isArray(copy)) ) ) { + if ( copyIsArray ) { + copyIsArray = false; + clone = src && jQuery.isArray(src) ? src : []; + + } else { + clone = src && jQuery.isPlainObject(src) ? src : {}; + } // Never move original objects, clone them target[ name ] = jQuery.extend( deep, clone, copy ); @@ -355,41 +384,58 @@ jQuery.extend({ return jQuery; }, - + // Is the DOM ready to be used? Set to true once it occurs. isReady: false, - + + // A counter to track how many items to wait for before + // the ready event fires. See #6781 + readyWait: 1, + // Handle when the DOM is ready - ready: function() { + ready: function( wait ) { + // A third-party is pushing the ready event forwards + if ( wait === true ) { + jQuery.readyWait--; + } + // Make sure that the DOM is not already loaded - if ( !jQuery.isReady ) { + if ( !jQuery.readyWait || (wait !== true && !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 ); + return setTimeout( jQuery.ready, 1 ); } // Remember that the DOM is ready jQuery.isReady = true; + // If a normal DOM Ready event fired, decrement, and wait if need be + if ( wait !== true && --jQuery.readyWait > 0 ) { + return; + } + // 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 ); - } + var fn, + i = 0, + ready = readyList; // Reset the list of functions readyList = null; - } - // Trigger any bound ready events - if ( jQuery.fn.triggerHandler ) { - jQuery( document ).triggerHandler( "ready" ); + while ( (fn = ready[ i++ ]) ) { + fn.call( document, jQuery ); + } + + // Trigger any bound ready events + if ( jQuery.fn.trigger ) { + jQuery( document ).trigger( "ready" ).unbind( "ready" ); + } } } }, - + bindReady: function() { if ( readyBound ) { return; @@ -400,14 +446,15 @@ jQuery.extend({ // Catch cases where $(document).ready() is called after the // browser event has already occurred. if ( document.readyState === "complete" ) { - return jQuery.ready(); + // Handle it asynchronously to allow scripts the opportunity to delay ready + return setTimeout( jQuery.ready, 1 ); } // 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 ); @@ -416,7 +463,7 @@ jQuery.extend({ // 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 ); @@ -438,34 +485,49 @@ jQuery.extend({ // Since version 1.3, DOM methods and functions like alert // aren't supported. They return false on IE (#2968). isFunction: function( obj ) { - return toString.call(obj) === "[object Function]"; + return jQuery.type(obj) === "function"; + }, + + isArray: Array.isArray || function( obj ) { + return jQuery.type(obj) === "array"; }, - isArray: function( obj ) { - return toString.call(obj) === "[object Array]"; + // A crude way of determining if an object is a window + isWindow: function( obj ) { + return obj && typeof obj === "object" && "setInterval" in obj; + }, + + isNaN: function( obj ) { + return obj == null || !rdigit.test( obj ) || isNaN( obj ); + }, + + type: function( obj ) { + return obj == null ? + String( obj ) : + class2type[ toString.call(obj) ] || "object"; }, 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 ) { + if ( !obj || jQuery.type(obj) !== "object" || obj.nodeType || jQuery.isWindow( obj ) ) { return false; } - + // Not own constructor property must be Object if ( obj.constructor && !hasOwn.call(obj, "constructor") && !hasOwn.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 || hasOwn.call( obj, key ); }, @@ -475,11 +537,11 @@ jQuery.extend({ } return true; }, - + error: function( msg ) { throw msg; }, - + parseJSON: function( data ) { if ( typeof data !== "string" || !data ) { return null; @@ -487,12 +549,12 @@ jQuery.extend({ // Make sure leading/trailing whitespace is removed (IE can't handle it) data = jQuery.trim( data ); - + // Make sure the incoming data is actual JSON // Logic borrowed from http://json.org/json2.js - if ( /^[\],:{}\s]*$/.test(data.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, "@") - .replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, "]") - .replace(/(?:^|:|,)(?:\s*\[)+/g, "")) ) { + if ( rvalidchars.test(data.replace(rvalidescape, "@") + .replace(rvalidtokens, "]") + .replace(rvalidbraces, "")) ) { // Try to use the native JSON parser first return window.JSON && window.JSON.parse ? @@ -595,7 +657,9 @@ jQuery.extend({ // The extra typeof function check is to prevent crashes // in Safari 2 (See: #3039) // Tweaked logic slightly to handle Blackberry 4.7 RegExp issues #6930 - if ( array.length == null || typeof array === "string" || jQuery.isFunction(array) || typeof array === "function" || typeof array.setInterval !== "undefined" ) { + var type = jQuery.type(array); + + if ( array.length == null || type === "string" || type === "function" || type === "regexp" || jQuery.isWindow( array ) ) { push.call( ret, array ); } else { jQuery.merge( ret, array ); @@ -620,13 +684,14 @@ jQuery.extend({ }, merge: function( first, second ) { - var i = first.length, j = 0; + var i = first.length, + j = 0; 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++ ]; @@ -668,6 +733,7 @@ jQuery.extend({ } } + // Flatten any nested arrays return ret.concat.apply( [], ret ); }, @@ -706,7 +772,7 @@ jQuery.extend({ // The value/s can be optionally by executed if its a function access: function( elems, key, value, exec, fn, pass ) { var length = elems.length; - + // Setting many attributes if ( typeof key === "object" ) { for ( var k in key ) { @@ -714,19 +780,19 @@ jQuery.extend({ } 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 ) : undefined; }, @@ -740,10 +806,10 @@ jQuery.extend({ uaMatch: function( ua ) { ua = ua.toLowerCase(); - var match = /(webkit)[ \/]([\w.]+)/.exec( ua ) || - /(opera)(?:.*version)?[ \/]([\w.]+)/.exec( ua ) || - /(msie) ([\w.]+)/.exec( ua ) || - !/compatible/.test( ua ) && /(mozilla)(?:.*? rv:([\w.]+))?/.exec( ua ) || + var match = rwebkit.exec( ua ) || + ropera.exec( ua ) || + rmsie.exec( ua ) || + ua.indexOf("compatible") < 0 && rmozilla.exec( ua ) || []; return { browser: match[1] || "", version: match[2] || "0" }; @@ -752,6 +818,11 @@ jQuery.extend({ browser: {} }); +// Populate the class2type map +jQuery.each("Boolean Number String Function Array Date RegExp Object".split(" "), function(i, name) { + class2type[ "[object " + name + "]" ] = name.toLowerCase(); +}); + browserMatch = jQuery.uaMatch( userAgent ); if ( browserMatch.browser ) { jQuery.browser[ browserMatch.browser ] = true; @@ -771,7 +842,7 @@ if ( indexOf ) { // Verify that \s matches non-breaking spaces // (IE fails on this test) -if ( !/\s/.test( "\xA0" ) ) { +if ( !rwhite.test( "\xA0" ) ) { trimLeft = /^[\s\xA0]+/; trimRight = /[\s\xA0]+$/; } @@ -815,7 +886,12 @@ function doScrollCheck() { jQuery.ready(); } +// Expose jQuery as an Asynchronous Module +if ( typeof define === "function" ) { + define( "jquery", [], function () { return jQuery; } ); +} + // Expose jQuery to the global object -window.jQuery = window.$ = jQuery; +return (window.jQuery = window.$ = jQuery); })();