var o = {}; // 创建一个新对象

// Example of an object property added with defineProperty with a data property descriptor

Object.defineProperty(o, "a", {value : 37,

                               writable : true,

                               enumerable : true,

                               configurable : true});

// 对象o拥有了属性a，值为37

// Example of an object property added with defineProperty with an accessor property descriptor

var bValue;

Object.defineProperty(o, "b", {get : function(){ return bValue; },

                               set : function(newValue){ bValue = newValue; },

                               enumerable : true,

                               configurable : true});

o.b = 38;

<div>

    <p>你好，<span id='nickName'></span></p>

    <div id="introduce"></div>

</div>　　　　　　

//视图控制器

var userInfo = {};

Object.defineProperty(userInfo, "nickName", {

    get: function(){

        return document.getElementById('nickName').innerHTML;

    },

    set: function(nick){

        document.getElementById('nickName').innerHTML = nick;

    }

});

Object.defineProperty(userInfo, "introduce", {

    get: function(){

        return document.getElementById('introduce').innerHTML;

    },

    set: function(introduce){

        document.getElementById('introduce').innerHTML = introduce;

    }

})

//数据

//todo 获取用户信息的代码

....

userInfo.nickName = "xxx";

userInfo.introduce = "我是xxx，我来自云南，..."