jquery框架实现基本原理

请看下面代码就明白了

var $ = jquery = function(){
		this.AA = 1;
		return jquery.fn.init();
	};
	jquery.fn = jquery.prototype = {
		init: function(){
			this.AA = 2;
			return this;
		},
		AA: 3,
		version: "1.32"
	};
	var abc = new $();
	console.log("jquery:"+ abc);
	console.log("jquery:"+ $().version);