JSFiddle - React, Tailwind, and code Playground

HTML

<div>

</div>

JavaScript

$(document).ready(function(){
    var $element = $('div');

    document.onkeyup = function(event) { 
        var text = $element.html();

        switch (event.keyCode) {
        case 37:
            $element.html( text + "<br>Left" );
            break;
        case 38:
            $element.html( text + "<br>Up" );
            break;
        case 39:
            $element.html( text + "<br>Right" );
            break;
        case 40:
            $element.html( text + "<br>Down" );
            break;
        } 
    };      
});