Facebook message count

Show facebook message count on https://www.facebook.com/messages

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Facebook message count
// @namespace    http://tampermonkey.net/
// @version      0.7
// @description  Show facebook message count on https://www.facebook.com/messages
// @author       Tomáš Falešník
// @match        https://www.facebook.com/*
// @grant        none
// @require      http://code.jquery.com/jquery-latest.js
// @license      MIT license
// ==/UserScript==

(function() {
    'use strict';
    // Show message count for facebook.com/messages page
    setInterval(function() {
        if (window.location.href.indexOf("facebook.com/messages") != -1) {
            var messageHeader = $("#webMessengerHeaderName");
            console.log(messageHeader);
            if (messageHeader.length) {
                var messageCount = $("._7hx > span").html();
                if (!$("#messageCount").length) {
                    $('<h2 class="_r7" style="max-width: 286px; font-size: 13px;"> (<span id="messageCount"></span> messages)</h2>').insertAfter(messageHeader);
                }
                $("#messageCount").html(parseInt(messageCount) + $("#webMessengerRecentMessages").find(".webMessengerMessageGroup").find("._3hi").length + $("#webMessengerRecentMessages").find("._4mnv").length);
            }
        }
    }, 500);
})();