JSFiddle - React, Tailwind, and code Playground

by Charles Cavalcante

HTML

<div id="shift">

</div>

JavaScript

var shiftPressed = false;

document.addEventListener ('keydown', function(event) {
  shiftPressed = event.shiftKey;
});

document.addEventListener ('keyup', function(event) {
  shiftPressed = event.shiftKey;
});

setInterval(function(){
	document.getElementById("shift").innerHTML = shiftPressed ? "shift pressed" : "";
}, 10);