function createAnother(original){ var clone = Object.create(original); //通過(guò)調(diào)用函數(shù)創(chuàng)建一個(gè)新對(duì)象 clone.sayHi = function(){    //以某種方式來(lái)增強(qiáng)這個(gè)對(duì)象  alert("Hi"); };  return clone;      //返回這個(gè)對(duì)象}var person = { name: "Bob", friends: ["Shelby", "Court", "Van"]};var anotherPerson = createAnother(person);anotherPerson.sayHi();

function SuperType(name){ this.name = name; this.colors = ["red", "blue", "green"];}SuperType.prototype.sayName = function(){ alert(this.name);}function SubType(name, age){ SuperType.call(this, name);　　//第二次調(diào)用SuperType()  this.age = age;}SubType.prototype = new SuperType();　　//第一次調(diào)用SuperType()SubType.prototype.sayAge = function(){ alert(this.age);}

function inheritPrototype(subType, superType){ var protoType = Object.create(superType.prototype); //創(chuàng)建對(duì)象 protoType.constructor = subType;     //增強(qiáng)對(duì)象 subType.prototype = protoType;      //指定對(duì)象}function SuperType(name){ this.name = name; this.colors = ["red", "blue", "green"];}SuperType.prototype.sayName = function(){ alert(this.name);}function SubType(name, age){ SuperType.call(this, name);　　//第二次調(diào)用SuperType()  this.age = age;}inheritPrototype(SubType, SuperType)SubType.prototype.sayAge = function(){ alert(this.age);}var instance = new SubType("Bob", 18);instance.sayName();instance.sayAge();