复制代码 代码如下:

function P(name){

this.name=name;

this.p1=function(){

alert('Parent Constructor');

}

return this;

}

function C(name,id){

//this.method=P;

//this.method(name); //1st method

//P.call(this,name); //2nd method

P.apply(this,new Array(name));//3rd method

this.id=id;

this.dis=function(){

alert(this.name);

}

}

function dis(){

alert(this.name);

}

function t(){

var cc=new C('N','Id');

cc.dis();

cc.p1();

}