A webkit-notification plugin for [Web WeChat](https://web.wechatapp.com/) **I only tested chrome, and if it could run on other browser, please notice me :)**

web_wechat_notification_plugin.js

// ==UserScript==
// @name       Desktop Notification 4 Web WeChat
// @namespace  https://gist.github.com/4639820
// @version    1.0
// @description  nothing
// @match      https://web.wechatapp.com/
// @copyright  2013+, Carmack.Shi
// ==/UserScript==

var mainFunc = function () {

    var checkUnRead = function () {
        var unReadSpans = $('span.unreadDot').text();
        var unReadCount = 0;
        for (var i = 0; i < unReadSpans.length; i++) {
            unReadCount += parseInt(unReadSpans[i]);
        }
        return unReadCount;
    };

    var doCheck = function () {
        if (window.webkitNotifications.checkPermission() == 0) { // already permitted
            var t = checkUnRead();
            if (t > 0) {
                window.webkitNotifications.createNotification("", "WeChat Notification", "You got " + t + " unread message").show();
            }
        }
    }


    // check for notifications support
    if (!window.webkitNotifications) {
        alert("Sorry, your bowrser currently not support desktop notification.");
    } else {
        if (window.webkitNotifications.checkPermission() == 1) { //PERMISSION_NOT_ALLOWED
            alert('Please allow notification by click the bottom link, and them click allow on the top.');
            $('.footer').append('<div><a  onclick="void(window.webkitNotifications.requestPermission());"  >Start desktop permission</a></div>')
            window.webkitNotifications.requestPermission();
        }
        setInterval(doCheck, 1000);
    }
}

// a function that loads jQuery and calls a callback function when jQuery has finished loading
function addJQuery(callback) {
    var script = document.createElement("script");
    script.setAttribute("src", "//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js");
    script.addEventListener('load', function () {
        var script = document.createElement("script");
        script.textContent = "window.jQ=jQuery.noConflict(true);(" + callback.toString() + ")();";
        document.body.appendChild(script);
    }, false);
    document.body.appendChild(script);
}

addJQuery(mainFunc);