Add playlist support to list of links in Canvas

AddPlaylist.js

var lastNode = null;
var video = document.createElement('iframe');
video.setAttribute('name','jlFrame');
video.style = `display: block;
    width: 1900px;
    float: right;
    position: absolute;
    right: 0px;
    min-height: 100vh;
    top: 0px;
    z-index: 1000;`;


var target = document.querySelector('#application');
target.insertAdjacentElement('afterbegin', video);

var dump = document.querySelectorAll('.user_content.enhanced h2')[1];

var mediaLinks = Array.from(document.querySelectorAll('a')).filter(a => a.href.indexOf('/embed') > 0);

mediaLinks.forEach(function(l) {
    l.setAttribute('target', 'jlFrame');
    l.addEventListener('click', function() {
        dump.innerText = l.text.split('\n')[0];

        l.parentNode.style = 'background: #ccc; color: blue;';
        if (lastNode)
            lastNode.parentNode.style = '';

        lastNode = l;
    });
});