javaScript没有集成的对象，所以采用下面三种方法模拟：
1、js原型实现继承
function Person(name,age){
this.name=name;
this.age=age;
}
Person.prototype.sayHello=function(){
document.write("使用原型得到Name："+this.name+"</br>");
}
//var per=new Person("zhangping","21");
//per.sayHello();
function Student(){}
Student.prototype=new Person("zhangping","21");
var stu=new Student();
Student.prototype.gade="3";
Student.prototype.intr=function(){
document.write(this.gade);
}
stu.sayHello();
stu.intr();
*/
2、构造函数实现继承
/*
function Parent(name){
this.name=name;
this.sayParent=function(){
document.write("Parent:"+this.name);
}
}
function Child(name,age){
this.tempMethod=Parent;
this.tempMethod(name);
/*
this.age=age;
this.sayParent=function(){
document.write("Child:"+this.name+"age:"+this.age);
}
*/
/*
}
var parent=new Parent("zhangping");
parent.sayParent();
var child=new Child("xiaoguanxianfei","11");
child.sayParent();
*/
3、使用Call Applay实现继承
function Person(name,age,love){
this.name=name;
this.age=age;
this.love=love;
this.say=function say(){
document.write("姓名："+name);
}
}
function student(name,age){
Person.call(this,name,age);
}
function teacher(name,love){
Person.apply(this,[name,love]);
}
var per=new Person("zhangping","21","guanxianfei");
per.say();
var stu=new student("guanxianfei","22");
stu.say();
var tea=new teacher("xiaoguanxianfei","22");
tea.say();