Userscript that changes the upload time of a Youtube video to a relative format

youtube-relative-time.user.js

// ==UserScript==
// @name        Youtube Relative Time
// @namespace   http://nkmathew.net
// @author      nkmathew
// @description Changes the upload time of a Youtube video to a relative format
// @icon        http://www.youtube.com/favicon.ico
// @icon64      http://www.youtube.com/favicon.ico
// @version     0.1.0
// @include     /^https?:\/\/(.+\.)?youtube\.com\/watch?.*$/
// @require     https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.18.1/moment.min.js
// @grant       GM_getValue
// @grant       GM_setValue
// ==/UserScript==

var timeNode = document.getElementsByClassName('watch-time-text')[0];
var uploadDate = timeNode.innerText;
var date = /\w\w\w \d\d, \d\d\d\d/.exec(uploadDate);
if (date) {
  date = moment(date[0], 'MMM DD, YYYY').fromNow();
  timeNode.innerText = `${uploadDate} ≈≈ ${date}`;
}