event.key value is "Unidentified" for Escape, NumLock, and for all numpad keys (other than Enter) when numlock is on; event.code is empty string for all keys

The event.key value is "Unidentified" for Escape and NumLock, and for numpad keys other than Enter when numlock is on.

And for apparently every key, event.code is an empty string.

Sample code:


<body>
<h1>Press a key</h1>
<div id="output"></div>
<script>
document.addEventListener('keydown', function(event) {
  document.getElementById('output').innerHTML = `
    key: ${event.key}<br>
    code: ${event.code}<br>
    which: ${event.which}<br>
    keyCode: ${event.keyCode}<br>
  `;
});
</script>
</body>
</html>

ultralight-ux / Ultralight

event.key value is "Unidentified" for Escape, NumLock, and for all numpad keys (other than Enter) when numlock is on; event.code is empty string for all keys #504