前端小知识-js

一、对象冒充

function student(name,age){
		this.name = name;
		this.age = age;
		this.show = function(){
			console.log("name:"+name,"age:"+age);
		}
	}
	function teacher(name,age){
		this.teacher = student;
		this.teacher(name,age);
		delete this.teacher;
	}
	var ss = new teacher("xiaoming",22);
	ss.show();
	var dd = new student("xiaolan",20);
	dd.show();