JSFiddle - React, Tailwind, and code Playground

HTML

<pre id="result"></pre>

JavaScript

var result = document.getElementById('result');
result.innerHTML = 'navigator.appName: ' + navigator.appName;
result.innerHTML += '\nnavigator.userAgent: ' + navigator.userAgent;
result.innerHTML += '\ndocument.compatMode: ' + document.compatMode;
result.innerHTML += '\ndocument.documentMode: ' + document.documentMode;