JSFiddle - React, Tailwind, and code Playground

JavaScript

addEventListener("keydown", function (event) { alert(
    "STANDARD: " + event.DOM_KEY_LOCATION_STANDARD + "\n" +
    "LEFT: " +     event.DOM_KEY_LOCATION_LEFT + "\n" +
    "RIGHT: " +    event.DOM_KEY_LOCATION_RIGHT + "\n" +
    "NUMPAD: " +   event.DOM_KEY_LOCATION_NUMPAD + "\n" +
    "MOBILE: " +   event.DOM_KEY_LOCATION_MOBILE + "\n" +
    "JOYSTICK: " + event.DOM_KEY_LOCATION_JOYSTICK); });