关于原型对象的理解加案例

    
    //原型对象的练习
    //定义一个空的类型
    function Person(){
        
        
    }
    //通过类型名.prototype获取到的原型（），给原型动态的添加属性
    Person.prototype.names = "黄渤";
    Person.prototype.age = 39;
    Person.prototype.address = "北京";
    Person.prototype.showInfo = function(){
        alert(this.names+"
"+this.age+"
"+this.address);
    }
    var p1 = new Person();
    p1.showInfo();
    var p2 = new Person();
    
    p2.names = "黄晓明 ";
    p2.age = 35;
    p2.address = "山东青岛";
    p2.showInfo();