Jenkins failed projects badge on Fluidapp

jenkins.js

// ==UserScript==
// @name        Jenkins CI
// @namespace   http://fluidapp.com
// @description Jenkins failed projects badge on Fluidapp
// @include     http://your-jenins-project.com
// @author      Danilo Sousa <[email protected]>
// ==/UserScript==

(function () {
  if (window.fluid) {
    window.fluid.dockBadge = '';
    
    setTimeout(updateDockBadge, 1000)
    setInterval(updateDockBadge, 5000);
    
    function updateDockBadge() {
      var errors = jQuery('#projectstatus td img[tooltip][alt=Failed]').size();
      window.fluid.dockBadge = errors > 0 ? errors : '';
    };
  }
}());