js 定义一个对象 里面有function和变量

/*
 * PhoneGap Essential Training by ninghao.net
 */
var app = {
    // 应用构造器
    initialize: function() {
        this.bindEvents();
    },
    // 绑定事件监听器
    bindEvents: function() {
        document.addEventListener('deviceready', this.onDeviceReady, false);
    },
    // deviceready 事件处理
    onDeviceReady: function() {
        app.receivedEvent('deviceready');
    },
    // 接收到事件以后更新 DOM
    receivedEvent: function(id) {
        var parentElement = document.getElementById(id);
        var listeningElement = parentElement.querySelector('.listening');
        var receivedElement = parentElement.querySelector('.received');

        listeningElement.setAttribute('style', 'display:none;');
        receivedElement.setAttribute('style', 'display:block;');

        console.log('Received Event: ' + id);
    }
};