JS 继承实例分析

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(); 
}