JSFiddle - React, Tailwind, and code Playground

HTML

<div id="divContent">
http://www.youtube.com/watch?v=t-ZRX8984sc
    <br />
http://vimeo.com/82495711
    <br />
http://youtu.be/t-ZRX8984sc
</div>

JavaScript

$('#divContent').html(function(i, html) {
    return html.replace(/(?:http:\/\/)?(?:www\.)?(?:youtube\.com|youtu\.be)\/(?:watch\?v=)?(.+)/g, '<iframe width="200" height="100" src="http://www.youtube.com/embed/$1" frameborder="0" allowfullscreen></iframe>').replace(/(?:http:\/\/)?(?:www\.)?(?:vimeo\.com)\/(.+)/g, '<iframe src="//player.vimeo.com/video/$1" width="200" height="100" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>');

});