js继承实例

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，

转载于:https://www.cnblogs.com/zhangwenkan/p/4268424.html