js实现继承的几种常见方法
1. 实例继承：
function Person(){
this.name="liming";
}
var people1=new Person()
console.log(people1.name) //liming
2. 原型链继承
function Person(){
this.name="Bob";
}
function Student(){
}
Student.prototype=new Person();//将Person实例赋值给Student的原型对象
var one=new Student();
console.log(one.name) //Bob
3.构造函数继承
function Person() {
this.name="Bob";
}
function Child(){
Person.call(this)
console.log(this.name)
}
Child()
