X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Fcore.js;h=2b00627dbee3af23d20afcf838baf78c8d29c07b;hb=747ba7defd82bffa6c7ccb69e53b834cbfddb62c;hp=4c7b07eca87226591d2c87de4e75ab8f2e65911f;hpb=715d1c5a30cc4986018bbf063713f14c34c3e258;p=jquery.git diff --git a/src/core.js b/src/core.js index 4c7b07e..2b00627 100644 --- a/src/core.js +++ b/src/core.js @@ -1,3 +1,5 @@ +var jQuery = (function() { + // Define a local copy of jQuery var jQuery = function( selector, context ) { // The jQuery object is actually just the init constructor 'enhanced' @@ -11,14 +13,14 @@ var jQuery = function( selector, context ) { _$ = window.$, // Use the correct document accordingly with window argument (sandbox) - document = window.document, + //document = window.document, // A central reference to the root jQuery(document) rootjQuery, // A simple way to check for HTML strings or ID strings // (both of which we optimize for) - quickExpr = /^[^<]*(<[\w\W]+>)[^>]*$|^#([\w-]+)$/, + quickExpr = /^[^<]*(<[\w\W]+>)[^>]*$|^#([\w\-]+)$/, // Is it a simple selector isSimple = /^.[^:#\[\.,]*$/, @@ -27,13 +29,17 @@ var jQuery = function( selector, context ) { rnotwhite = /\S/, // Used for trimming whitespace - rtrim = /^(\s|\u00A0)+|(\s|\u00A0)+$/g, + trimLeft = /^\s+/, + trimRight = /\s+$/, // Match a standalone tag rsingleTag = /^<(\w+)\s*\/?>(?:<\/\1>)?$/, // Keep a UserAgent string for use with jQuery.browser - userAgent = navigator.userAgent.toLowerCase(), + userAgent = navigator.userAgent, + + // For matching the engine and version of the browser + browserMatch, // Has the ready events already been bound? readyBound = false, @@ -41,11 +47,15 @@ var jQuery = function( selector, context ) { // 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, + hasOwn = Object.prototype.hasOwnProperty, push = Array.prototype.push, slice = Array.prototype.slice, + trim = String.prototype.trim, indexOf = Array.prototype.indexOf; jQuery.fn = jQuery.prototype = { @@ -63,6 +73,15 @@ jQuery.fn = jQuery.prototype = { this.length = 1; return this; } + + // The body element only exists once, optimize finding it + if ( selector === "body" && !context ) { + this.context = document; + this[0] = document.body; + this.selector = "body"; + this.length = 1; + return this; + } // Handle HTML strings if ( typeof selector === "string" ) { @@ -81,18 +100,28 @@ jQuery.fn = jQuery.prototype = { ret = rsingleTag.exec( selector ); if ( ret ) { - selector = [ doc.createElement( ret[1] ) ]; + 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 ] ); + 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] ) { @@ -114,6 +143,7 @@ jQuery.fn = jQuery.prototype = { this.selector = selector; this.context = document; selector = document.getElementsByTagName( selector ); + return jQuery.merge( this, selector ); // HANDLE: $(expr, $(...)) } else if ( !context || context.jquery ) { @@ -136,9 +166,7 @@ jQuery.fn = jQuery.prototype = { this.context = selector.context; } - return jQuery.isArray( selector ) ? - this.setArray( selector ) : - jQuery.makeArray( selector, this ); + return jQuery.makeArray( selector, this ); }, // Start with an empty selector @@ -155,7 +183,7 @@ jQuery.fn = jQuery.prototype = { return this.length; }, - toArray: function(){ + toArray: function() { return slice.call( this, 0 ); }, @@ -175,7 +203,14 @@ jQuery.fn = jQuery.prototype = { // (returning the new matched element set) pushStack: function( elems, name, selector ) { // Build a new jQuery matched element set - var ret = jQuery( elems || null ); + var ret = jQuery(); + + if ( jQuery.isArray( elems ) ) { + push.apply( ret, elems ); + + } else { + jQuery.merge( ret, elems ); + } // Add the old object onto the stack (as a reference) ret.prevObject = this; @@ -192,61 +227,59 @@ jQuery.fn = jQuery.prototype = { return ret; }, - // Force the current matched set of elements to become - // the specified array of elements (destroying the stack in the process) - // You should use pushStack() in order to do this, but maintain the stack - setArray: function( elems ) { - // 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; - push.apply( this, elems ); - - return this; - }, - // Execute a callback for every element in the matched set. // (You can seed the arguments with an array of args, but this is // only used internally.) each: function( callback, args ) { return jQuery.each( this, callback, args ); }, - - // Determine the position of an element within - // the matched set of elements - index: function( elem ) { - if ( !elem || typeof elem === "string" ) { - return jQuery.inArray( this[0], - // If it receives a string, the selector is used - // If it receives nothing, the siblings are used - elem ? jQuery( elem ) : this.parent().children() ); - } - // Locate the position of the desired element - return jQuery.inArray( - // If it receives a jQuery object, the first element is used - elem.jquery ? elem[0] : elem, this ); - }, - - is: function( selector ) { - return !!selector && jQuery.filter( selector, this ).length > 0; - }, ready: function( fn ) { // Attach the listeners jQuery.bindReady(); // If the DOM is already ready - if ( jQuery.isReady && !readyList ) { + if ( jQuery.isReady ) { // Execute the function immediately fn.call( document, jQuery ); // Otherwise, remember the function for later - } else { + } 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 ); + }, + + first: function() { + return this.eq( 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. @@ -294,10 +327,10 @@ jQuery.extend = jQuery.fn.extend = function() { continue; } - // Recurse if we're merging object literal values - if ( deep && copy && jQuery.isPlainObject(copy) ) { - // Don't extend not object literals - var clone = src && jQuery.isPlainObject(src) ? src : {}; + // 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) ? [] : {}; // Never move original objects, clone them target[ name ] = jQuery.extend( deep, clone, copy ); @@ -327,11 +360,21 @@ jQuery.extend({ // 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 && !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 ); } @@ -339,6 +382,11 @@ jQuery.extend({ // 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 @@ -359,7 +407,10 @@ jQuery.extend({ }, bindReady: function() { - if ( readyBound ) { return; } + if ( readyBound ) { + return; + } + readyBound = true; // Catch cases where $(document).ready() is called after the @@ -371,10 +422,7 @@ jQuery.extend({ // Mozilla, Opera and webkit nightlies currently support this event if ( document.addEventListener ) { // Use the handy event callback - document.addEventListener( "DOMContentLoaded", function DOMContentLoaded() { - document.removeEventListener( "DOMContentLoaded", DOMContentLoaded, false ); - jQuery.ready(); - }, false ); + document.addEventListener( "DOMContentLoaded", DOMContentLoaded, false ); // A fallback to window.onload, that will always work window.addEventListener( "load", jQuery.ready, false ); @@ -383,13 +431,7 @@ jQuery.extend({ } else if ( document.attachEvent ) { // ensure firing before onload, // maybe late but safe also for iframes - document.attachEvent("onreadystatechange", function onreadystatechange() { - // Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443). - if ( document.readyState === "complete" ) { - document.detachEvent( "onreadystatechange", onreadystatechange ); - jQuery.ready(); - } - }); + document.attachEvent("onreadystatechange", DOMContentLoaded); // A fallback to window.onload, that will always work window.attachEvent( "onload", jQuery.ready ); @@ -400,28 +442,10 @@ jQuery.extend({ try { toplevel = window.frameElement == null; - } catch(e){} + } catch(e) {} if ( document.documentElement.doScroll && toplevel ) { doScrollCheck(); - - 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(); - } } } }, @@ -430,32 +454,41 @@ 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]"; + type: function( obj ) { + return obj == null ? + String( obj ) : + toString.call(obj).slice(8, -1).toLowerCase(); }, isPlainObject: function( obj ) { - if ( toString.call(obj) !== "[object Object]" || typeof obj.nodeType === "number" ) { + // 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 || jQuery.type(obj) !== "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") ) { + // 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 iterated firstly, - //so to speed up, we can test last one if it is own or not + // 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 ); + return key === undefined || hasOwn.call( obj, key ); }, isEmptyObject: function( obj ) { @@ -464,6 +497,36 @@ jQuery.extend({ } return true; }, + + error: function( msg ) { + throw msg; + }, + + parseJSON: function( data ) { + if ( typeof data !== "string" || !data ) { + return null; + } + + // 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, "")) ) { + + // Try to use the native JSON parser first + return window.JSON && window.JSON.parse ? + window.JSON.parse( data ) : + (new Function("return " + data))(); + + } else { + jQuery.error( "Invalid JSON: " + data ); + } + }, + + noop: function() {}, // Evalulates a script in a global context globalEval: function( data ) { @@ -530,9 +593,20 @@ jQuery.extend({ return object; }, - trim: function( text ) { - return (text || "").replace( rtrim, "" ); - }, + // Use native String.trim function wherever possible + trim: trim ? + function( text ) { + return text == null ? + "" : + trim.call( text ); + } : + + // Otherwise use our own trimming functionality + function( text ) { + return text == null ? + "" : + text.toString().replace( trimLeft, "" ).replace( trimRight, "" ); + }, // results is for internal usage only makeArray: function( array, results ) { @@ -542,7 +616,10 @@ jQuery.extend({ // The window, strings (and functions) also have 'length' // 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) ) { + // Tweaked logic slightly to handle Blackberry 4.7 RegExp issues #6930 + var type = jQuery.type(array); + + if ( array.length == null || type === "string" || type === "function" || type === "regexp" || "setInterval" in array ) { push.call( ret, array ); } else { jQuery.merge( ret, array ); @@ -573,6 +650,7 @@ jQuery.extend({ for ( var l = second.length; j < l; j++ ) { first[ i++ ] = second[ j ]; } + } else { while ( second[j] !== undefined ) { first[ i++ ] = second[ j++ ]; @@ -585,12 +663,14 @@ jQuery.extend({ }, grep: function( elems, callback, inv ) { - var ret = []; + var ret = [], retVal; + inv = !!inv; // 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 ) ) { + retVal = !!callback( elems[ i ], i ); + if ( inv !== retVal ) { ret.push( elems[ i ] ); } } @@ -615,19 +695,97 @@ jQuery.extend({ 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; + }, + + // Mutifunctional method to get and set values to a collection + // 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 ) { + jQuery.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 ) : undefined; + }, + + now: function() { + return (new Date()).getTime(); + }, + // Use of jQuery.browser is frowned upon. // More details: http://docs.jquery.com/Utilities/jQuery.browser - browser: { - version: (/.*?(?:firefox|safari|opera|msie)[\/ ]([\d.]+)/.exec(userAgent) || [0,'0'])[1], - safari: /safari/.test( userAgent ), - opera: /opera/.test( userAgent ), - msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ), - firefox: /firefox/.test( userAgent ) - } + 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 ) || + []; + + return { browser: match[1] || "", version: match[2] || "0" }; + }, + + browser: {} }); -// Deprecated -jQuery.browser.mozilla = /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent ); +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 ) { @@ -635,55 +793,53 @@ if ( indexOf ) { }; } +// Verify that \s matches non-breaking spaces +// (IE fails on this test) +if ( !/\s/.test( "\xA0" ) ) { + trimLeft = /^[\s\xA0]+/; + trimRight = /[\s\xA0]+$/; +} + // All jQuery objects should point back to these rootjQuery = jQuery(document); -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 || "" ); - } +// Cleanup functions for the document ready method +if ( document.addEventListener ) { + DOMContentLoaded = function() { + document.removeEventListener( "DOMContentLoaded", DOMContentLoaded, false ); + jQuery.ready(); + }; - if ( elem.parentNode ) { - elem.parentNode.removeChild( elem ); - } +} 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(); + } + }; } -// 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 ) { - var l = elems.length; - - // Setting many attributes - if ( typeof key === "object" ) { - for (var k in key) { - access(elems, k, key[k], exec, fn); - } - return elems; +// The DOM ready check for Internet Explorer +function doScrollCheck() { + if ( jQuery.isReady ) { + return; } - - // Setting one attribute - if (value !== undefined) { - // Optionally, function values get executed if exec is true - exec = exec && jQuery.isFunction(value); - - for (var i = 0; i < l; i++) { - var elem = elems[i], - val = exec ? value.call(elem, i) : value; - fn(elem, key, val); - } - return elems; + + try { + // If IE is used, use the trick by Diego Perini + // http://javascript.nwbox.com/IEContentLoaded/ + document.documentElement.doScroll("left"); + } catch(e) { + setTimeout( doScrollCheck, 1 ); + return; } - - // Getting an attribute - return l ? fn(elems[0], key) : null; -} -function now() { - return (new Date).getTime(); + // and execute any waiting functions + jQuery.ready(); } + +// Expose jQuery to the global object +return (window.jQuery = window.$ = jQuery); + +})();