const insert = document.getElementById('insert') window.addEventListener('keydown', (event) => { insert.innerHTML = ` <div class="key"> ${event.key === ' ' ? 'Space' : event.key} <small>event.key</small> </div> <div class="key"> ${event.keyCode} <small>event.keyCode</small> </div> <div class="key"> ${event.code} <small>event.code</small> </div> ` })