<html>
<head></head>
<body>
<script type="text/javascript">
function Person(name){
this.name=name;
}
Person.prototype.getName= function(){
return this.name;
}
function User( name , passward){
this.passward= passward;
this.name=name;
}
/**
* 原型继承
* 每次调用new User()创建的对象就会自动拥有Person对象的所有方法
* */
User.prototype= new Person();
User.prototype.getPassward= function(){
return this.passward;
}
var per= new Person("Amy");
document.writeln(per.name);
document.writeln(per.getName());
var use=new User("hello",18);
document.writeln(use.name);
document.writeln(use.passward);
document.writeln(use.getName());
document.writeln(use.getPassward());
</script>
</body>
</html>
