InheritParasitic.js

// 寄生式继承

// 其基本思路是类似创建对象时的工厂模式，将继承过程封装在一个函数里，然后返回一个对象

function createObject(o){

  var clone = Object.create(o);

  clone.sayHi = function(){

   console.log("Hi~");

  };

 return clone;

}

var person = {

  name: "Tom",

  friends:  ["Jack", "John", "Kim"]

};

var David = createObject(person);

David.sayHi();//Hi~