用Jquery 写一个简单的消息提醒（带声音提示）

上周在公司做的一个Web聊天程序，需要一个即时消息提醒并且带有声音提示的功能，在网上找了一下资料，Jquery有个一插件 Jquery.Notify 这个运用比较

广，官网有他的详细介绍（https://notifyjs.com/）我这边只是依据我的需求简单的运用了一下；对了！他还有相应的Bootstrap封装的版本，功能似乎更加强大

（http://bootstrap-notify.remabledesigns.com/），不多说了，先贴一下我的代码，有问题的地方还请提出：

$(function(){var receiveIcon；var receiveMessage；var audioElementHovertree;var showNotification =false;//只在当前页面失去焦点时提示消息    window.onblur = function () {        showNotification = true;    }    window.onfocus = function () {        showNotification = false;    }});//消息提醒function check() {    // Let's check if the browser supports notifications    if (!("Notification" in window)) {        //alert("This browser does not support desktop notification");        return false;    }    if (Notification.permission !== "granted") {        Notification.requestPermission(function (permission) {            // Whatever the user answers, we make sure we store the information            if (!('permission' in Notification)) {                Notification.permission = permission;            }        });        return false;    }    return showNotification;}function notifyMe() {    if (check()) {        var notification = new Notification('新的消息', {            icon: receiveIcon,            //body: "Hey there! You've been notified!",            body:receiveMessage        });        notification.onshow = function () {            $('audio').remove();            audioElementHovertree = document.createElement('audio');            audioElementHovertree.setAttribute('src', 'http://w.qq.com/audio/classic.mp3');            audioElementHovertree.setAttribute('autoplay', 'autoplay'); //打开自动播放            //audioElement.load();        }        notification.onclick = function () {            window.focus();        };        setTimeout(notification.close.bind(notification), 5000);//auto clear notifications    }}