firefox selectionchange event for textarea?

Question

Listening for selectionchange events in a textarea works in chrome and safari, but not in firefox.

<div>selecting me will detect your selecting!</div>
<textarea>alas, I will not!</textarea>
<div id="f"></div>

document.addEventListener( 'selectionchange', function() {
  document.getElementById('f').innerHTML += '<br>selecting';
});

What event should I be listening for instead?

demo

https://codepen.io/jedierikb/pen/XWXxmZW

Answer 1

While document 'selectionchange' events do not fire in firefox textareas, textareas themselves can listen for 'select' events, which fire the same event types.

https://developer.mozilla.org/en-US/docs/Web/API/Element/select_event