第一种方法:对象冒充(临时属性)
借用临时属性,指向超类,末了删除
function Person(name,gender){ this.name=name; this.gender=gender; this.report=function(){ alert(this.name); } } function Employee(name,gender,employeeID){ this.method=Person; this.method(name,gender); delete this.method; this.employeeID=employeeID; this.getemployeeID=function(){ alert(this.employeeID); } var _this=this; this.report=function(){ setInterval(function(){ alert(_this.employeeID+":"+_this.name); },1000) } } var jj=new Employee("jj","男","24"); jj.report();
第二种方法:对象冒充(call,apply)
function Person(name,gender){ this.name=name; this.gender=gender; this.report=function(){ alert(this.name); } } function Employee(name,gender,employeeID){ Person.apply(this,new Array(name)); //Person.call(this,name); this.employeeID=employeeID; this.getemployeeID=function(){ alert(this.employeeID); } var _this=this; this.report=function(){ setInterval(function(){ alert(_this.employeeID+":"+_this.name); },1000) } } var jj=new Employee("jj","男","24"); jj.report();
第三种方法:原型链的方式(这种方式实例化子类时不能将参数传给父类)
最后,总结一下自认为较好的继承实现方式,成员变量采用对象冒充方式,成员方法采用原型链方式,
时间: 2024-10-29 19:08:19