OOP之属性继承和方法继承

 1 function CreatePerson(name,sex){
 2     this.name=name;
 3     this.sex=sex;
 4     this.showName();
 5     this.showSex();
 6 }
 7 CreatePerson.prototype={
 8     constructor:CreatePerson,//修正constructor
 9     showName:function(){
10         alert(this.name);
11     },
12     showSex:function(){
13         alert(this.sex);
14     }
15 }
16 new CreatePerson(‘小明‘,‘男‘);
17
18 function CreateStar(name,sex,job){
19     CreatePerson.call(this,name,sex);//继承CreatePerson属性
20     this.job=job;
21     this.showJob();
22 }
23
24 copyObj(CreateStar.prototype,CreatePerson.prototype);//拷贝继承CreatePerson.prototype的所有方法
25
26 CreateStar.prototype.showJob=function(){
27         alert(this.job);
28
29 }
30 new CreateStar(‘黄晓明‘,‘男‘,‘演员‘);
31
32 //拷贝父类的所有方法到子类
33 function copyObj(newObj,oldObj){
34     for(attr in oldObj){
35         newObj[attr]=oldObj[attr];
36     }
37 }