67d445a703
$("<div/>").after("<span/>")
=> [ div, span ]
(calling after on a disconnected DOM node adds the nodes to the end of the jQuery set)
$("<div/>").before("<span/>")
=> [ span, div ]
(calling before on a disconnected DOM node adds the nodes to the beginning of the jQuery set)
$("div").add("span")
=> [ div, span, span, div, span ]
(results now come out in document order)
$("div").find("code").andSelf();
=> [ div, code, code ]
(results now come out in document order)
Same goes for .parents(), .nextAll(), .prevAll(), and .siblings().
Exception: .parents() will still return the results in reverse document order.
jQuery.data(elem)
=> { object of data }
(no longer returns the unique ID assigned to the node)
565 lines
14 KiB
JavaScript
565 lines
14 KiB
JavaScript
// Define a local copy of jQuery
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var jQuery = function( selector, context ) {
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// The jQuery object is actually just the init constructor 'enhanced'
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return arguments.length === 0 ?
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rootjQuery :
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new jQuery.fn.init( selector, context );
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},
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// Map over jQuery in case of overwrite
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_jQuery = window.jQuery,
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// Map over the $ in case of overwrite
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_$ = window.$,
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// Use the correct document accordingly with window argument (sandbox)
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document = window.document,
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// A central reference to the root jQuery(document)
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rootjQuery,
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// A simple way to check for HTML strings or ID strings
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// (both of which we optimize for)
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quickExpr = /^[^<]*(<[\w\W]+>)[^>]*$|^#([\w-]+)$/,
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// Is it a simple selector
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isSimple = /^.[^:#\[\.,]*$/,
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// Check if a string has a non-whitespace character in it
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rnotwhite = /\S/,
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// Used for trimming whitespace
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rtrim = /^\s+|\s+$/g,
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// Match a standalone tag
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rsingleTag = /^<(\w+)\s*\/?>$/,
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// Keep a UserAgent string for use with jQuery.browser
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userAgent = navigator.userAgent.toLowerCase(),
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// Save a reference to some core methods
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toString = Object.prototype.toString,
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push = Array.prototype.push,
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slice = Array.prototype.slice,
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indexOf = Array.prototype.indexOf;
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jQuery.fn = jQuery.prototype = {
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init: function( selector, context ) {
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var match, elem, ret, doc;
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// Handle $(""), $(null), or $(undefined)
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if ( !selector ) {
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return this;
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}
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// Handle $(DOMElement)
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if ( selector.nodeType ) {
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this.context = this[0] = selector;
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this.length++;
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return this;
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}
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// Handle HTML strings
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if ( typeof selector === "string" ) {
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// Are we dealing with HTML string or an ID?
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match = quickExpr.exec( selector );
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// Verify a match, and that no context was specified for #id
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if ( match && (match[1] || !context) ) {
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// HANDLE: $(html) -> $(array)
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if ( match[1] ) {
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doc = (context ? context.ownerDocument || context : document);
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// If a single string is passed in and it's a single tag
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// just do a createElement and skip the rest
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ret = rsingleTag.exec( selector );
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if ( ret ) {
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selector = [ doc.createElement( ret[1] ) ];
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} else {
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ret = buildFragment( [ match[1] ], [ doc ] );
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selector = (ret.cacheable ? ret.fragment.cloneNode(true) : ret.fragment).childNodes;
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}
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// HANDLE: $("#id")
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} else {
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elem = document.getElementById( match[2] );
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if ( elem ) {
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// Handle the case where IE and Opera return items
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// by name instead of ID
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if ( elem.id !== match[2] ) {
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return rootjQuery.find( selector );
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}
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// Otherwise, we inject the element directly into the jQuery object
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this.length++;
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this[0] = elem;
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}
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this.context = document;
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this.selector = selector;
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return this;
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}
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// HANDLE: $("TAG")
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} else if ( !context && /^\w+$/.test( selector ) ) {
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this.selector = selector;
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this.context = document;
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selector = document.getElementsByTagName( selector );
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// HANDLE: $(expr, $(...))
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} else if ( !context || context.jquery ) {
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return (context || rootjQuery).find( selector );
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// HANDLE: $(expr, context)
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// (which is just equivalent to: $(context).find(expr)
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} else {
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return jQuery( context ).find( selector );
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}
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// HANDLE: $(function)
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// Shortcut for document ready
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} else if ( jQuery.isFunction( selector ) ) {
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return rootjQuery.ready( selector );
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}
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if (selector.selector !== undefined) {
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this.selector = selector.selector;
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this.context = selector.context;
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}
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return this.setArray(jQuery.isArray( selector ) ?
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selector :
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jQuery.makeArray(selector));
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},
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// Start with an empty selector
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selector: "",
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// The current version of jQuery being used
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jquery: "@VERSION",
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// The default length of a jQuery object is 0
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length: 0,
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// The number of elements contained in the matched element set
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size: function() {
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return this.length;
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},
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toArray: function(){
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return slice.call( this, 0 );
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},
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// Get the Nth element in the matched element set OR
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// Get the whole matched element set as a clean array
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get: function( num ) {
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return num == null ?
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// Return a 'clean' array
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this.toArray() :
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// Return just the object
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( num < 0 ? this.slice(num)[ 0 ] : this[ num ] );
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},
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// Take an array of elements and push it onto the stack
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// (returning the new matched element set)
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pushStack: function( elems, name, selector ) {
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// Build a new jQuery matched element set
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var ret = jQuery( elems || null );
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// Add the old object onto the stack (as a reference)
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ret.prevObject = this;
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ret.context = this.context;
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if ( name === "find" ) {
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ret.selector = this.selector + (this.selector ? " " : "") + selector;
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} else if ( name ) {
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ret.selector = this.selector + "." + name + "(" + selector + ")";
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}
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// Return the newly-formed element set
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return ret;
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},
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// Force the current matched set of elements to become
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// the specified array of elements (destroying the stack in the process)
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// You should use pushStack() in order to do this, but maintain the stack
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setArray: function( elems ) {
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// Resetting the length to 0, then using the native Array push
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// is a super-fast way to populate an object with array-like properties
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this.length = 0;
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push.apply( this, elems );
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return this;
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},
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// Execute a callback for every element in the matched set.
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// (You can seed the arguments with an array of args, but this is
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// only used internally.)
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each: function( callback, args ) {
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return jQuery.each( this, callback, args );
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},
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// Determine the position of an element within
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// the matched set of elements
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index: function( elem ) {
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if ( !elem || typeof elem === "string" ) {
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return jQuery.inArray( this[0],
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// If it receives a string, the selector is used
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// If it receives nothing, the siblings are used
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elem ? jQuery( elem ) : this.parent().children() );
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}
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// Locate the position of the desired element
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return jQuery.inArray(
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// If it receives a jQuery object, the first element is used
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elem.jquery ? elem[0] : elem, this );
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},
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is: function( selector ) {
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return !!selector && jQuery.multiFilter( selector, this ).length > 0;
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},
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// For internal use only.
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// Behaves like an Array's method, not like a jQuery method.
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push: push,
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sort: [].sort,
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splice: [].splice
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};
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// Give the init function the jQuery prototype for later instantiation
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jQuery.fn.init.prototype = jQuery.fn;
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jQuery.extend = jQuery.fn.extend = function() {
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// copy reference to target object
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var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options, name, src, copy;
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// Handle a deep copy situation
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if ( typeof target === "boolean" ) {
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deep = target;
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target = arguments[1] || {};
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// skip the boolean and the target
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i = 2;
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}
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// Handle case when target is a string or something (possible in deep copy)
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if ( typeof target !== "object" && !jQuery.isFunction(target) ) {
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target = {};
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}
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// extend jQuery itself if only one argument is passed
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if ( length === i ) {
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target = this;
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--i;
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}
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for ( ; i < length; i++ ) {
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// Only deal with non-null/undefined values
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if ( (options = arguments[ i ]) != null ) {
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// Extend the base object
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for ( name in options ) {
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src = target[ name ];
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copy = options[ name ];
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// Prevent never-ending loop
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if ( target === copy ) {
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continue;
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}
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// Recurse if we're merging object values
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if ( deep && copy && typeof copy === "object" && !copy.nodeType ) {
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var clone;
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if ( src ) {
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clone = src;
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} else if ( jQuery.isArray(copy) ) {
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clone = [];
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} else if ( jQuery.isObject(copy) ) {
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clone = {};
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} else {
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clone = copy;
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}
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// Never move original objects, clone them
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target[ name ] = jQuery.extend( deep, clone, copy );
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// Don't bring in undefined values
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} else if ( copy !== undefined ) {
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target[ name ] = copy;
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}
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}
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}
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}
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// Return the modified object
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return target;
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};
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jQuery.extend({
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noConflict: function( deep ) {
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window.$ = _$;
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if ( deep ) {
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window.jQuery = _jQuery;
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}
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return jQuery;
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},
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// See test/unit/core.js for details concerning isFunction.
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// Since version 1.3, DOM methods and functions like alert
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// aren't supported. They return false on IE (#2968).
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isFunction: function( obj ) {
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return toString.call(obj) === "[object Function]";
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},
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isArray: function( obj ) {
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return toString.call(obj) === "[object Array]";
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},
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isObject: function( obj ) {
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return this.constructor.call(obj) === Object;
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},
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isEmptyObject: function( obj ) {
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for ( var name in obj ) {
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return false;
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}
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return true;
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},
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// check if an element is in a (or is an) XML document
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isXMLDoc: function( elem ) {
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// documentElement is verified for cases where it doesn't yet exist
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// (such as loading iframes in IE - #4833)
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var documentElement = (elem ? elem.ownerDocument || elem : 0).documentElement;
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return documentElement ? documentElement.nodeName !== "HTML" : false;
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},
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// Evalulates a script in a global context
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globalEval: function( data ) {
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if ( data && rnotwhite.test(data) ) {
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// Inspired by code by Andrea Giammarchi
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// http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
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var head = document.getElementsByTagName("head")[0] || document.documentElement,
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script = document.createElement("script");
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script.type = "text/javascript";
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if ( jQuery.support.scriptEval ) {
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script.appendChild( document.createTextNode( data ) );
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} else {
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script.text = data;
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}
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// Use insertBefore instead of appendChild to circumvent an IE6 bug.
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// This arises when a base node is used (#2709).
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head.insertBefore( script, head.firstChild );
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head.removeChild( script );
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}
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},
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nodeName: function( elem, name ) {
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return elem.nodeName && elem.nodeName.toUpperCase() === name.toUpperCase();
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},
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// args is for internal usage only
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each: function( object, callback, args ) {
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var name, i = 0,
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length = object.length,
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isObj = length === undefined || jQuery.isFunction(object);
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if ( args ) {
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if ( isObj ) {
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for ( name in object ) {
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if ( callback.apply( object[ name ], args ) === false ) {
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break;
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}
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}
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} else {
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for ( ; i < length; ) {
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if ( callback.apply( object[ i++ ], args ) === false ) {
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break;
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}
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}
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}
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// A special, fast, case for the most common use of each
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} else {
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if ( isObj ) {
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for ( name in object ) {
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if ( callback.call( object[ name ], name, object[ name ] ) === false ) {
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break;
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}
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}
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} else {
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for ( var value = object[0];
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i < length && callback.call( value, i, value ) !== false; value = object[++i] ) {}
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}
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}
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return object;
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},
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trim: function( text ) {
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return (text || "").replace( rtrim, "" );
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},
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makeArray: function( array ) {
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var ret = [], i;
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if ( array != null ) {
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i = array.length;
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// The window, strings (and functions) also have 'length'
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if ( i == null || typeof array === "string" || jQuery.isFunction(array) || array.setInterval ) {
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ret[0] = array;
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} else {
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while ( i ) {
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ret[--i] = array[i];
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}
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}
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}
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return ret;
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},
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inArray: function( elem, array ) {
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for ( var i = 0, length = array.length; i < length; i++ ) {
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if ( array[ i ] === elem ) {
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return i;
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}
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}
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return -1;
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},
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merge: function( first, second ) {
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// We have to loop this way because IE & Opera overwrite the length
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// expando of getElementsByTagName
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var i = 0, elem, pos = first.length;
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// Also, we need to make sure that the correct elements are being returned
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// (IE returns comment nodes in a '*' query)
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if ( !jQuery.support.getAll ) {
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while ( (elem = second[ i++ ]) != null ) {
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if ( elem.nodeType !== 8 ) {
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first[ pos++ ] = elem;
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}
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}
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} else {
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while ( (elem = second[ i++ ]) != null ) {
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first[ pos++ ] = elem;
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}
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}
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return first;
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},
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grep: function( elems, callback, inv ) {
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var ret = [];
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// Go through the array, only saving the items
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// that pass the validator function
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for ( var i = 0, length = elems.length; i < length; i++ ) {
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if ( !inv !== !callback( elems[ i ], i ) ) {
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ret.push( elems[ i ] );
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}
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}
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return ret;
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},
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map: function( elems, callback ) {
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var ret = [], value;
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// Go through the array, translating each of the items to their
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// new value (or values).
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for ( var i = 0, length = elems.length; i < length; i++ ) {
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value = callback( elems[ i ], i );
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if ( value != null ) {
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ret[ ret.length ] = value;
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}
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}
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return ret.concat.apply( [], ret );
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},
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// Use of jQuery.browser is deprecated.
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// It's included for backwards compatibility and plugins,
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// although they should work to migrate away.
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browser: {
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version: (/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/.exec(userAgent) || [0,'0'])[1],
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safari: /webkit/.test( userAgent ),
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opera: /opera/.test( userAgent ),
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msie: /msie/.test( userAgent ) && !/opera/.test( userAgent ),
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mozilla: /mozilla/.test( userAgent ) && !/(compatible|webkit)/.test( userAgent )
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}
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});
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if ( indexOf ) {
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jQuery.inArray = function( elem, array ) {
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return indexOf.call( array, elem );
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};
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}
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// All jQuery objects should point back to these
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rootjQuery = jQuery(document);
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function evalScript( i, elem ) {
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if ( elem.src ) {
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jQuery.ajax({
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url: elem.src,
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async: false,
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dataType: "script"
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});
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} else {
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jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" );
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}
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if ( elem.parentNode ) {
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elem.parentNode.removeChild( elem );
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}
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}
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// Mutifunctional method to get and set values to a collection
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// The value/s can be optionally by executed if its a function
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function access( elems, key, value, exec, fn ) {
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var l = elems.length;
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// Setting many attributes
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if ( typeof key === "object" ) {
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for (var k in key) {
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access(elems, k, key[k], exec, fn);
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}
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return elems;
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}
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// Setting one attribute
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if (value !== undefined) {
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// Optionally, function values get executed if exec is true
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exec = exec && jQuery.isFunction(value);
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for (var i = 0; i < l; i++) {
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var elem = elems[i],
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val = exec ? value.call(elem, i) : value;
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fn(elem, key, val);
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}
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return elems;
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}
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// Getting an attribute
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return l ? fn(elems[0], key) : null;
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}
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function now() {
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return (new Date).getTime();
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}
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