People.prototype.summary = function() { return this.firstname + " " + this.lastname; }; Employee.prototype.summary = function() { return this.super.call(this) + ", " + this.company; }; Manager.prototype.summary = function() { return this.super.call(this) + ", " + this.title; };
在所有的成员方法都已经定义好之后，声明类的继承（必须先定义方法，再声明类的继承，否则无法在方法中使用this.super调用父类方法！）：
extend(People, Employee); extend(Employee, Manager);
使用这些类就比较简单，直接new就好了：
var people = new People("Alice", "Dickens"); var employee = new Employee("Bob", "Ray", "Alibaba"); var manager = new Manager("Calvin", "Klein", "Alibaba", "Senior Manager"); console.log( people.summary() ); //Alice Dickens console.log( employee.summary() ); //Bob Ray, Alibaba console.log( manager.summary() ); //Calvin Klein, Alibaba, Senior Manager
这篇文章不错吧，那就给个赞吧！
您可能感兴趣的文章: