- function Parent(name,sex){
- this.name = name;
- this.sex = sex;
- this.sayName = function(){
- console.log(this.name+':'+this.sex);
- }
- }
- Object.prototype.method = function(obj){
- for (var attr in obj){
- this[attr] = obj[attr];
- }
- }
- function Son(age){
- this.age = age;
- this.show = function(){
- console.log(this.name+':'+this.sex+':'+this.age);
- }
- }
- var p1 = new Parent('zhangsan','男');
- var p2 = new Son(23);
- p2.method(p1);
- p2.show();
因为给原型链的的顶端添加方法, 所以所有的对象都会添加此属性和方法
来源: http://www.bubuko.com/infodetail-2658825.html