JS面向对象之继承

 1 function Person() {
 2     this.name = ‘Anis‘;
 3 }
 4 Person.prototype.showName = function () {
 5     alert(this.name);
 6 };
 7 
 8 var p1 = new Person();
 9 // p1.showName();
10 
11 
12 extend(PerJob.prototype, Person.prototype)
13 function PerJob() {
14     Person.call(this); // 调用父类的构造函数
15 
16     this.job = ‘code‘;
17 }
18 
19 function extend(subClass, parentClass) {
20     for (var i in parentClass) {
21         subClass[i] = parentClass[i];
22     }
23 }
24 var p2 = new PerJob();
25 p2.showName()