title: Key code from KeyboardEvent in android is unidentified?
body: <p>I will get a Char from <code>keydown</code> event.</p>
  <p>In all browsers I can use <code>event.key</code> and it works fine, but in android the result is something else:</p>
  <pre><code>event.key: unidentified
  event.code: ''
  event.which: `229` (for [a-z0-9] is always this number)
  window.event.keyCode: `229`
  </code></pre>
  <p>Here is an <em><a href="https://stackoverflow.com/questions/45433810/event-key-is-undefined-in-mobile-browsers-for-keyup-keydown-and-keypress">old stackoverflow post</a></em>, but it doesn't work any more.</p>
  <p><a href="https://codepen.io/miladfm/pen/eYmvjyz" rel="nofollow noreferrer">codepen demo</a> for test in android <strong>(IOS and PC work fine)</strong></p>
  <p><strong>How can i get key code or key string from <code>KeyboardEvent</code></strong></p>