js 如何实现面向对象

var Person = function(name, email, website){

this.name = name;

this.email = email;

this.website = website;

this.sayHello = function(){

var hello = "Hello, I'm "+ this.name + "， \n" +

"my email is: " + this.email + "， \n" +

"my website is: " + this.website;

alert(hello);

};

};

var chenhao = new Person("Chen Hao", "haoel@hotmail.com",

"http://coolshell.cn");

chenhao.sayHello();