js 类 方法绑定

//name:新增加方法的名字

//func:新增加的方法

Function.prototype.method = function(name,func){

    this.prototype[name] = func;

    return this;

}

function ClassA(name){

   this.name = name; 

}

function getName(){

    return this.name;

}

function getPassword(){

    return this.password;

}

function ClassB(name,password){

    this.name = name;

    this.password = password;

}

ClassB.prototype.getPassword = function(){

    return this.password;

}

ClassA.method("getName",getName);

ClassA.method("getPassword",getPassword);

var a = new ClassA('xiaobai');

alert(a.getName());

ClassB.method("getName",getName);

ClassB.method("getPassword",getPassword);

var b = new ClassB('Ryan','123');

alert(b.getName());

alert(b.getPassword());