//组合构造函数+原型模式function Box(name,age){            //保持独立的用构造函数    this.name = name;    this.age = age;    this.family = [‘哥哥‘,‘姐姐‘,‘妹妹‘]};Box.prototype = {                //保持共享的用原型    constructor:Box,    run:function(){        return this.name + this.age + ‘运行中...‘;    }};var box1 = new Box(‘Lee‘,100);box1.family.push(‘弟弟‘);var box2 = new Box(‘Jack‘,200);alert(box1.family);alert(box2.family);        //引用类型没有使用原型，所以没有共享