/* 给一个实例化后的空对象添加属性、方法 */obj = {};obj.Name = "张三";obj.Age = 33;obj.ShowInfo = function () { alert(obj.Name + ", " + obj.Age); }obj.ShowInfo(); //张三, 33/* 用函数建立并返回对象 */function GetObj(name, age) {    return {        Name: name,        Age: age,        ShowInfo: function () { alert(this.Name + ", " + this.Age); }    }}GetObj("张三", 33).ShowInfo(); //张三, 33/* 模拟类 */function MyClass(name, age) {    this.Name = name;                                  //属性    this.Age = age;                                    //属性    this.ShowName = function () { alert(this.Name); }; //方法}obj1 = new MyClass("张三", 33); //实例化obj1.ShowName(); //张三//补加的属性与方法MyClass.prototype.ClassName = "MyClass"; MyClass.prototype.ShowInfo = function () { alert(this.ClassName + ", " + this.Name + ", " + this.Age); }obj1.ShowInfo(); //MyClass, 张三, 33obj2 = new MyClass("李四", 44); //实例化obj2.ShowInfo(); //MyClass, 李四, 44

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