JSFiddle - React, Tailwind, and code Playground

by Roko

HTML

<iframe id="videorotator" style="box-shadow: 5px 5px 5px #888888;" width="307" height="315" src="" frameborder="0" allowfullscreen></iframe>

JavaScript

var video = document.getElementById('videorotator');
var videos =["//www.youtube.com/embed/pAgnJDJN4VA","//www.youtube.com/embed/Lo2qQmj0_h4"];
var day = new Date().getDay();  

video.setAttribute('src', videos[day%videos.length]);