jquery 원본 - jquery 변수 정의

var
	// A central reference to the root jQuery(document)
	rootjQuery,//  jquery   

	// The deferred used on DOM ready
	readyList,//Deferred      

	// Use the correct document accordingly with window argument (sandbox)
    //        JS               ，               /  ,   juquery       ，     ，         
	document = window.document,
	location = window.location,
	navigator = window.navigator,

	// Map over jQuery in case of overwrite
	_jQuery = window.jQuery,

	// Map over the $ in case of overwrite
	_$ = window.$,

	// Save a reference to some core methods
	core_push = Array.prototype.push,
	core_slice = Array.prototype.slice,
	core_indexOf = Array.prototype.indexOf,
	core_toString = Object.prototype.toString,
	core_hasOwn = Object.prototype.hasOwnProperty,
	core_trim = String.prototype.trim,

	// Define a local copy of jQuery(       jquery   )
	jQuery = function( selector, context ) {
		// The jQuery object is actually just the init constructor 'enhanced'
		return new jQuery.fn.init( selector, context, rootjQuery );
	},

	// Used for matching numbers(           ) / /  /  /     
	core_pnum = /[\-+]?(?:\d*\.|)\d+(?:[eE][\-+]?\d+|)/.source,

	// Used for detecting and trimming whitespace
	core_rnotwhite = /\S/,//       
	core_rspace = /\s+/,//        

	// Make sure we trim BOM and NBSP (here's looking at you, Safari 5.0 and IE)
	rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,

	// A simple way to check for HTML strings
	// Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
     //   html      #id      
	rquickExpr = /^(?:[^#<]*(<[\w\W]+>)[^>]*$|#([\w\-]*)$)/,

	// Match a standalone tag (     )   <a></a>   <br />
	rsingleTag = /^<(\w+)\s*\/?>(?:<\/\1>|)$/,

	// JSON RegExp
	rvalidchars = /^[\],:{}\s]*$/,//  JSON           
	rvalidbraces = /(?:^|:|,)(?:\s*\[)+/g,
	rvalidescape = /\\(?:["\\\/bfnrt]|u[\da-fA-F]{4})/g,//                
	rvalidtokens = /"[^"\\\r
]*"|true|false|null|-?(?:\d\d*\.|)\d+(?:[eE][\-+]?\d+|)/g,//           /bool/null/  

	// Matches dashed string for camelizing
	rmsPrefix = /^-ms-/,
	rdashAlpha = /-([\da-z])/gi,

	// Used by jQuery.camelCase as callback to replace()
    //     ，                    all？
	fcamelCase = function( all, letter ) {
		return ( letter + "" ).toUpperCase();
	},

	// The ready event handler and self cleanup method
    //     docuemnt           
	DOMContentLoaded = function() {
		if ( document.addEventListener ) {
			document.removeEventListener( "DOMContentLoaded", DOMContentLoaded, false );
			jQuery.ready();
		} else if ( document.readyState === "complete" ) {
			// we're here because readyState === "complete" in oldIE
			// which is good enough for us to call the dom ready!
			document.detachEvent( "onreadystatechange", DOMContentLoaded );
			jQuery.ready();
		}
	},

	// [[Class]] -> type pairs
	class2type = {};