Count Media on Auvio by page

Count Media on Auvio by page.js

// ==UserScript==
// @name     Count Media on Auvio Page
// @version  1
// @include https://*.rtbf.be/auvio/*
// @author Sébastien Barbieri
// ==/UserScript==


var counter = document.createElement("div");
counter.innerHTML = '<div id="myCounter" style="margin: 0 auto 0 auto; ' +
    'border-bottom: 1px solid red; margin-bottom: 5px; ' +
    'font-size: small; background-color: #000000; ' +
  	'z-index: 5000; position: fixed; top: 40px; left: 40px;' +
    'color: #ffffff;"><p style="margin: 2px 0 1px 0;"> ' +
    'Scroll down then click me' +
    '</p>' +
		'</div>';

document.body.insertBefore(counter, document.body.firstChild);


document.getElementById('myCounter').onclick = function changeContent() {
  totalCount = document.querySelectorAll('article.col-xxs-6').length;
  document.querySelector('#myCounter > p').innerHTML = "Medias: "+totalCount;
}