js中创建对象方式

<script> //1.方法一 var per1={ name:"卡卡西", age:"15", eat:function(){ console.log("及哈哈"); } };//方法二var per2=new Object();per2.name="大蛇丸";per2.age=14;per2.eat=function(){console.log("吃阿布");}console.log(per2 instanceof Object);//第三种是构造函数,function Person(name,age,sex){this.name=name;this.age=age;this.play=function(){console.log("天天打游戏");}}var p=new Person("名人",19);p.play();console.log(p instanceof Person); </script>

function Person(name,age) { ?????this.name=name; ?????this.age=age; ?????this.sayHi=function () { ???????console.log("您好"); ?????}; ??????}// 工厂的方式function createPerson(name,age){var obj=new Object();obj.name=name;obj.age=age;obj.sayHi=function(){console.log("你好aa");} ??return obj;} ?var per2=createPerson("小明",20); ?per2.sayHi();