cocos2d-JS 帧听断网、连网事件

cocos2d-JS 帧听断网、联网事件 :

var EventUtil = {    addHandler: function(element, type, handler) {        if (element.addEventListener) {            element.addEventListener(type, handler, false);        } else if (element.attachEvent) {            element.attachEvent("on" + type, handler);        } else {            element["on" + type] = handler;        }    }};EventUtil.addHandler(window, "online", function() {    alert("Online---正常工作");});EventUtil.addHandler(window, "offline", function() {    alert("Offline ---离线工作");});