JSFiddle - React, Tailwind, and code Playground

HTML

<div id="feedback"></div>
<!--
    Focus the "Result" window in the bottom right to capture keyboard input.
-->

JavaScript

var feedback = $('#feedback');
$("body")
    .bind("keydown", function(e) {
        feedback.html("keyDown " + e.keyCode + ".<br>Metakey is down: " + e.metaKey);
    })
    .bind("keyup", function(e) {
        feedback.html("keyUp " + e.keyCode + ".<br>Metakey is down: " + e.metaKey);
    });