Test Keycodes
by Erik
HTML
<input type='text' id='input'>
<p>last keyCode:</p>
<p id='result'></p>
JavaScript
let input = document.getElementById('input')
let result = document.getElementById('result')
input.addEventListener('keyup', showKey)
function showKey (event) {
console.log(event)
result.innerHTML = event.keyCode
}