JavaScript基础概念之----继承

每个对象都继承原型对象的所有属性

function People(name,age){
    this.name = name;
    this.age = age;
}

People.prototype.getWolk = function(){
    console.log('getWolk');
}

var o1 = new People('adhehe',23);
var o2 = new People('Jhone',46);

console.log(o1.name)//输出adhehe
console.log(o2.name)//输出Jhone
o1.getWolk() //输出getWolk
o2.getWolk() //输出getWolk

function Child(){}

Child.prototype = new People();

var o3 = new Child('Halun',2);
var o4 = new Child('Plili',3);

console.log(o3.name)//输出undefined
console.log(o4.name)//输出undefined
o3.getWolk()//输出getWolk
o4.getWolk()//输出getWolk