mirror of
https://github.com/jquery/jquery.git
synced 2024-11-23 02:54:22 +00:00
18d006762c
(cherry picked from commit e3777b6437
)
847 lines
20 KiB
JavaScript
847 lines
20 KiB
JavaScript
var
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// A central reference to the root jQuery(document)
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rootjQuery,
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// The deferred used on DOM ready
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readyList,
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// Support: IE9
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// For `typeof xmlNode.method` instead of `xmlNode.method !== undefined`
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core_strundefined = typeof undefined,
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// Use the correct document accordingly with window argument (sandbox)
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location = window.location,
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document = window.document,
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docElem = document.documentElement,
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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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// [[Class]] -> type pairs
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class2type = {},
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// List of deleted data cache ids, so we can reuse them
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core_deletedIds = [],
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core_version = "@VERSION",
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// Save a reference to some core methods
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core_concat = core_deletedIds.concat,
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core_push = core_deletedIds.push,
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core_slice = core_deletedIds.slice,
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core_indexOf = core_deletedIds.indexOf,
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core_toString = class2type.toString,
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core_hasOwn = class2type.hasOwnProperty,
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core_trim = core_version.trim,
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// Define a local copy of jQuery
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jQuery = function( selector, context ) {
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// The jQuery object is actually just the init constructor 'enhanced'
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return new jQuery.fn.init( selector, context, rootjQuery );
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},
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// Used for matching numbers
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core_pnum = /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/.source,
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// Used for splitting on whitespace
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core_rnotwhite = /\S+/g,
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// A simple way to check for HTML strings
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// Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
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// Strict HTML recognition (#11290: must start with <)
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rquickExpr = /^(?:(<[\w\W]+>)[^>]*|#([\w-]*))$/,
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// Match a standalone tag
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rsingleTag = /^<(\w+)\s*\/?>(?:<\/\1>|)$/,
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// Matches dashed string for camelizing
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rmsPrefix = /^-ms-/,
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rdashAlpha = /-([\da-z])/gi,
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// Used by jQuery.camelCase as callback to replace()
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fcamelCase = function( all, letter ) {
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return letter.toUpperCase();
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},
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// The ready event handler and self cleanup method
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completed = function() {
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document.removeEventListener( "DOMContentLoaded", completed, false );
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window.removeEventListener( "load", completed, false );
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jQuery.ready();
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};
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jQuery.fn = jQuery.prototype = {
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// The current version of jQuery being used
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jquery: core_version,
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constructor: jQuery,
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init: function( selector, context, rootjQuery ) {
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var match, elem;
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// HANDLE: $(""), $(null), $(undefined), $(false)
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if ( !selector ) {
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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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if ( selector.charAt(0) === "<" && selector.charAt( selector.length - 1 ) === ">" && selector.length >= 3 ) {
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// Assume that strings that start and end with <> are HTML and skip the regex check
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match = [ null, selector, null ];
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} else {
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match = rquickExpr.exec( selector );
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}
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// Match html or make sure no context is 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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context = context instanceof jQuery ? context[0] : context;
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// scripts is true for back-compat
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jQuery.merge( this, jQuery.parseHTML(
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match[1],
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context && context.nodeType ? context.ownerDocument || context : document,
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true
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) );
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// HANDLE: $(html, props)
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if ( rsingleTag.test( match[1] ) && jQuery.isPlainObject( context ) ) {
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for ( match in context ) {
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// Properties of context are called as methods if possible
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if ( jQuery.isFunction( this[ match ] ) ) {
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this[ match ]( context[ match ] );
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// ...and otherwise set as attributes
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} else {
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this.attr( match, context[ match ] );
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}
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}
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}
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return this;
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// HANDLE: $(#id)
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} else {
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elem = document.getElementById( match[2] );
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// Check parentNode to catch when Blackberry 4.6 returns
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// nodes that are no longer in the document #6963
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if ( elem && elem.parentNode ) {
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// Inject the element directly into the jQuery object
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this.length = 1;
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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: $(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 this.constructor( context ).find( selector );
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}
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// HANDLE: $(DOMElement)
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} else if ( selector.nodeType ) {
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this.context = this[0] = selector;
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this.length = 1;
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return this;
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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 jQuery.makeArray( selector, this );
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},
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// Start with an empty selector
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selector: "",
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// The default length of a jQuery object is 0
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length: 0,
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toArray: function() {
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return core_slice.call( this );
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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[ this.length + num ] : 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 ) {
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// Build a new jQuery matched element set
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var ret = jQuery.merge( this.constructor(), elems );
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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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// Return the newly-formed element set
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return ret;
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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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ready: function( fn ) {
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// Add the callback
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jQuery.ready.promise().done( fn );
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return this;
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},
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slice: function() {
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return this.pushStack( core_slice.apply( this, arguments ) );
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},
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first: function() {
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return this.eq( 0 );
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},
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last: function() {
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return this.eq( -1 );
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},
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eq: function( i ) {
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var len = this.length,
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j = +i + ( i < 0 ? len : 0 );
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return this.pushStack( j >= 0 && j < len ? [ this[j] ] : [] );
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},
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map: function( callback ) {
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return this.pushStack( jQuery.map(this, function( elem, i ) {
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return callback.call( elem, i, elem );
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}));
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},
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end: function() {
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return this.prevObject || this.constructor(null);
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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: core_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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var options, name, src, copy, copyIsArray, clone,
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target = arguments[0] || {},
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i = 1,
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length = arguments.length,
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deep = false;
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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 plain objects or arrays
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if ( deep && copy && ( jQuery.isPlainObject(copy) || (copyIsArray = jQuery.isArray(copy)) ) ) {
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if ( copyIsArray ) {
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copyIsArray = false;
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clone = src && jQuery.isArray(src) ? src : [];
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} else {
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clone = src && jQuery.isPlainObject(src) ? src : {};
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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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// Unique for each copy of jQuery on the page
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expando: "jQuery" + ( core_version + Math.random() ).replace( /\D/g, "" ),
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noConflict: function( deep ) {
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if ( window.$ === jQuery ) {
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window.$ = _$;
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}
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if ( deep && window.jQuery === jQuery ) {
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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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// Is the DOM ready to be used? Set to true once it occurs.
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isReady: false,
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// A counter to track how many items to wait for before
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// the ready event fires. See #6781
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readyWait: 1,
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// Hold (or release) the ready event
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holdReady: function( hold ) {
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if ( hold ) {
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jQuery.readyWait++;
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} else {
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jQuery.ready( true );
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}
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},
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// Handle when the DOM is ready
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ready: function( wait ) {
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// Abort if there are pending holds or we're already ready
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if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {
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return;
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}
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// Remember that the DOM is ready
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jQuery.isReady = true;
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// If a normal DOM Ready event fired, decrement, and wait if need be
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if ( wait !== true && --jQuery.readyWait > 0 ) {
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return;
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}
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// If there are functions bound, to execute
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readyList.resolveWith( document, [ jQuery ] );
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// Trigger any bound ready events
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if ( jQuery.fn.trigger ) {
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jQuery( document ).trigger("ready").off("ready");
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}
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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 jQuery.type(obj) === "function";
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},
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isArray: Array.isArray,
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isWindow: function( obj ) {
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return obj != null && obj === obj.window;
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},
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isNumeric: function( obj ) {
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return !isNaN( parseFloat(obj) ) && isFinite( obj );
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},
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type: function( obj ) {
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if ( obj == null ) {
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return String( obj );
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}
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// Support: Safari <= 5.1 (functionish RegExp)
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return typeof obj === "object" || typeof obj === "function" ?
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class2type[ core_toString.call(obj) ] || "object" :
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typeof obj;
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},
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isPlainObject: function( obj ) {
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// Not plain objects:
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// - Any object or value whose internal [[Class]] property is not "[object Object]"
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// - DOM nodes
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// - window
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if ( jQuery.type( obj ) !== "object" || obj.nodeType || jQuery.isWindow( obj ) ) {
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return false;
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}
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// Support: Firefox <20
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// The try/catch suppresses exceptions thrown when attempting to access
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// the "constructor" property of certain host objects, ie. |window.location|
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// https://bugzilla.mozilla.org/show_bug.cgi?id=814622
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try {
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if ( obj.constructor &&
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!core_hasOwn.call( obj.constructor.prototype, "isPrototypeOf" ) ) {
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return false;
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}
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} catch ( e ) {
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return false;
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}
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// If the function hasn't returned already, we're confident that
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// |obj| is a plain object, created by {} or constructed with new Object
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return true;
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},
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isEmptyObject: function( obj ) {
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var name;
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for ( 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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error: function( msg ) {
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throw new Error( msg );
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},
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// data: string of html
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// context (optional): If specified, the fragment will be created in this context, defaults to document
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// keepScripts (optional): If true, will include scripts passed in the html string
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parseHTML: function( data, context, keepScripts ) {
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if ( !data || typeof data !== "string" ) {
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return null;
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}
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if ( typeof context === "boolean" ) {
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keepScripts = context;
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context = false;
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}
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context = context || document;
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var parsed = rsingleTag.exec( data ),
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scripts = !keepScripts && [];
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// Single tag
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if ( parsed ) {
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return [ context.createElement( parsed[1] ) ];
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}
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parsed = jQuery.buildFragment( [ data ], context, scripts );
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if ( scripts ) {
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jQuery( scripts ).remove();
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}
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return jQuery.merge( [], parsed.childNodes );
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},
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parseJSON: JSON.parse,
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// Cross-browser xml parsing
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parseXML: function( data ) {
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var xml, tmp;
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if ( !data || typeof data !== "string" ) {
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return null;
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}
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// Support: IE9
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try {
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tmp = new DOMParser();
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xml = tmp.parseFromString( data , "text/xml" );
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} catch ( e ) {
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xml = undefined;
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}
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if ( !xml || xml.getElementsByTagName( "parsererror" ).length ) {
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jQuery.error( "Invalid XML: " + data );
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}
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return xml;
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},
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noop: function() {},
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// Evaluates a script in a global context
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globalEval: function( code ) {
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var script,
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indirect = eval;
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code = jQuery.trim( code );
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if ( code ) {
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// If the code includes a valid, prologue position
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// strict mode pragma, execute code by injecting a
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// script tag into the document.
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if ( code.indexOf("use strict") === 1 ) {
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script = document.createElement("script");
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script.text = code;
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document.head.appendChild( script ).parentNode.removeChild( script );
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} else {
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// Otherwise, avoid the DOM node creation, insertion
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// and removal by using an indirect global eval
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indirect( code );
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}
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}
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},
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// Convert dashed to camelCase; used by the css and data modules
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// Microsoft forgot to hump their vendor prefix (#9572)
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camelCase: function( string ) {
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return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase );
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},
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nodeName: function( elem, name ) {
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return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();
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},
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// args is for internal usage only
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each: function( obj, callback, args ) {
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var value,
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i = 0,
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length = obj.length,
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isArray = isArraylike( obj );
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if ( args ) {
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if ( isArray ) {
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for ( ; i < length; i++ ) {
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value = callback.apply( obj[ i ], args );
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if ( value === 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 in obj ) {
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value = callback.apply( obj[ i ], args );
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if ( value === 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 ( isArray ) {
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for ( ; i < length; i++ ) {
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value = callback.call( obj[ i ], i, obj[ i ] );
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if ( value === 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 in obj ) {
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value = callback.call( obj[ i ], i, obj[ i ] );
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if ( value === false ) {
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break;
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}
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}
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}
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}
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return obj;
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},
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trim: function( text ) {
|
|
return text == null ? "" : core_trim.call( text );
|
|
},
|
|
|
|
// results is for internal usage only
|
|
makeArray: function( arr, results ) {
|
|
var ret = results || [];
|
|
|
|
if ( arr != null ) {
|
|
if ( isArraylike( Object(arr) ) ) {
|
|
jQuery.merge( ret,
|
|
typeof arr === "string" ?
|
|
[ arr ] : arr
|
|
);
|
|
} else {
|
|
core_push.call( ret, arr );
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
},
|
|
|
|
inArray: function( elem, arr, i ) {
|
|
return arr == null ? -1 : core_indexOf.call( arr, elem, i );
|
|
},
|
|
|
|
merge: function( first, second ) {
|
|
var l = second.length,
|
|
i = first.length,
|
|
j = 0;
|
|
|
|
if ( typeof l === "number" ) {
|
|
for ( ; j < l; j++ ) {
|
|
first[ i++ ] = second[ j ];
|
|
}
|
|
} else {
|
|
while ( second[j] !== undefined ) {
|
|
first[ i++ ] = second[ j++ ];
|
|
}
|
|
}
|
|
|
|
first.length = i;
|
|
|
|
return first;
|
|
},
|
|
|
|
grep: function( elems, callback, inv ) {
|
|
var retVal,
|
|
ret = [],
|
|
i = 0,
|
|
length = elems.length;
|
|
inv = !!inv;
|
|
|
|
// Go through the array, only saving the items
|
|
// that pass the validator function
|
|
for ( ; i < length; i++ ) {
|
|
retVal = !!callback( elems[ i ], i );
|
|
if ( inv !== retVal ) {
|
|
ret.push( elems[ i ] );
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
},
|
|
|
|
// arg is for internal usage only
|
|
map: function( elems, callback, arg ) {
|
|
var value,
|
|
i = 0,
|
|
length = elems.length,
|
|
isArray = isArraylike( elems ),
|
|
ret = [];
|
|
|
|
// Go through the array, translating each of the items to their
|
|
if ( isArray ) {
|
|
for ( ; i < length; i++ ) {
|
|
value = callback( elems[ i ], i, arg );
|
|
|
|
if ( value != null ) {
|
|
ret[ ret.length ] = value;
|
|
}
|
|
}
|
|
|
|
// Go through every key on the object,
|
|
} else {
|
|
for ( i in elems ) {
|
|
value = callback( elems[ i ], i, arg );
|
|
|
|
if ( value != null ) {
|
|
ret[ ret.length ] = value;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Flatten any nested arrays
|
|
return core_concat.apply( [], ret );
|
|
},
|
|
|
|
// A global GUID counter for objects
|
|
guid: 1,
|
|
|
|
// Bind a function to a context, optionally partially applying any
|
|
// arguments.
|
|
proxy: function( fn, context ) {
|
|
var tmp, args, proxy;
|
|
|
|
if ( typeof context === "string" ) {
|
|
tmp = fn[ context ];
|
|
context = fn;
|
|
fn = tmp;
|
|
}
|
|
|
|
// Quick check to determine if target is callable, in the spec
|
|
// this throws a TypeError, but we will just return undefined.
|
|
if ( !jQuery.isFunction( fn ) ) {
|
|
return undefined;
|
|
}
|
|
|
|
// Simulated bind
|
|
args = core_slice.call( arguments, 2 );
|
|
proxy = function() {
|
|
return fn.apply( context || this, args.concat( core_slice.call( arguments ) ) );
|
|
};
|
|
|
|
// Set the guid of unique handler to the same of original handler, so it can be removed
|
|
proxy.guid = fn.guid = fn.guid || jQuery.guid++;
|
|
|
|
return proxy;
|
|
},
|
|
|
|
// Multifunctional method to get and set values of a collection
|
|
// The value/s can optionally be executed if it's a function
|
|
access: function( elems, fn, key, value, chainable, emptyGet, raw ) {
|
|
var i = 0,
|
|
length = elems.length,
|
|
bulk = key == null;
|
|
|
|
// Sets many values
|
|
if ( jQuery.type( key ) === "object" ) {
|
|
chainable = true;
|
|
for ( i in key ) {
|
|
jQuery.access( elems, fn, i, key[i], true, emptyGet, raw );
|
|
}
|
|
|
|
// Sets one value
|
|
} else if ( value !== undefined ) {
|
|
chainable = true;
|
|
|
|
if ( !jQuery.isFunction( value ) ) {
|
|
raw = true;
|
|
}
|
|
|
|
if ( bulk ) {
|
|
// Bulk operations run against the entire set
|
|
if ( raw ) {
|
|
fn.call( elems, value );
|
|
fn = null;
|
|
|
|
// ...except when executing function values
|
|
} else {
|
|
bulk = fn;
|
|
fn = function( elem, key, value ) {
|
|
return bulk.call( jQuery( elem ), value );
|
|
};
|
|
}
|
|
}
|
|
|
|
if ( fn ) {
|
|
for ( ; i < length; i++ ) {
|
|
fn( elems[i], key, raw ? value : value.call( elems[i], i, fn( elems[i], key ) ) );
|
|
}
|
|
}
|
|
}
|
|
|
|
return chainable ?
|
|
elems :
|
|
|
|
// Gets
|
|
bulk ?
|
|
fn.call( elems ) :
|
|
length ? fn( elems[0], key ) : emptyGet;
|
|
},
|
|
|
|
now: Date.now,
|
|
|
|
// A method for quickly swapping in/out CSS properties to get correct calculations.
|
|
// Note: this method belongs to the css module but it's needed here for the support module.
|
|
// If support gets modularized, this method should be moved back to the css module.
|
|
swap: function( elem, options, callback, args ) {
|
|
var ret, name,
|
|
old = {};
|
|
|
|
// Remember the old values, and insert the new ones
|
|
for ( name in options ) {
|
|
old[ name ] = elem.style[ name ];
|
|
elem.style[ name ] = options[ name ];
|
|
}
|
|
|
|
ret = callback.apply( elem, args || [] );
|
|
|
|
// Revert the old values
|
|
for ( name in options ) {
|
|
elem.style[ name ] = old[ name ];
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
});
|
|
|
|
jQuery.ready.promise = function( obj ) {
|
|
if ( !readyList ) {
|
|
|
|
readyList = jQuery.Deferred();
|
|
|
|
// Catch cases where $(document).ready() is called after the browser event has already occurred.
|
|
// we once tried to use readyState "interactive" here, but it caused issues like the one
|
|
// discovered by ChrisS here: http://bugs.jquery.com/ticket/12282#comment:15
|
|
if ( document.readyState === "complete" ) {
|
|
// Handle it asynchronously to allow scripts the opportunity to delay ready
|
|
setTimeout( jQuery.ready );
|
|
|
|
} else {
|
|
|
|
// Use the handy event callback
|
|
document.addEventListener( "DOMContentLoaded", completed, false );
|
|
|
|
// A fallback to window.onload, that will always work
|
|
window.addEventListener( "load", completed, false );
|
|
}
|
|
}
|
|
return readyList.promise( obj );
|
|
};
|
|
|
|
// Populate the class2type map
|
|
jQuery.each("Boolean Number String Function Array Date RegExp Object Error".split(" "), function(i, name) {
|
|
class2type[ "[object " + name + "]" ] = name.toLowerCase();
|
|
});
|
|
|
|
function isArraylike( obj ) {
|
|
var length = obj.length,
|
|
type = jQuery.type( obj );
|
|
|
|
if ( jQuery.isWindow( obj ) ) {
|
|
return false;
|
|
}
|
|
|
|
if ( obj.nodeType === 1 && length ) {
|
|
return true;
|
|
}
|
|
|
|
return type === "array" || type !== "function" &&
|
|
( length === 0 ||
|
|
typeof length === "number" && length > 0 && ( length - 1 ) in obj );
|
|
}
|
|
|
|
// All jQuery objects should point back to these
|
|
rootjQuery = jQuery(document);
|