JS模拟面向对象全解（五、继承）

var BaseClass =function(name,age)//基类构造
{

this.name = name;
this.age = age;

}

BaseClass.prototype.ToString = function(){//基类函数

return this.name+" " +this.age;

}

var Derived = function(name,age)//子类构造
{
BaseClass.call(this,name,age);//调用基类构造，继承对象成员
this.address = "地球";//子类特有属性

}
Derived.prototype=new BaseClass();//子类继承基类原型成员
var instance = new Derived("我是谁",0);//new子类

document.write(instance.ToString());//输出：我是谁 0