Key code from KeyboardEvent in android is unidentified?

Question

I will get a Char from keydown event.

In all browser i can use event.key and its work fine, but in android result is something else

event.key: unidentified
event.code: ''
event.which: `229` (for [a-z0-9] is always this number)
window.event.keyCode: `229`

hire is old stackoverflow post, but it dos't work any more.

codepen demo for test in android (IOS and PC work fine)

How can i get key code or key string from KeyboardEvent

Answer 1

Although this question is pretty old, I got here while searching for a similar thing and maybe this can help others.

Assuming you get text in HTML via:

<textarea id="my_input"></textarea>

or:

<input id="my_input"></input>

And assuming you want to get the last char entered in JavaScript, it works if you get the value of the input and slice everything away except the last char:

document.addEventListener('keyup', function(event) {
    val lastchar = document.getElementById('my_input').value.slice(-1);
});

Note: lastchar will also hold special characters like new line.

This works on Android 12 while (as you pointed out) event.key does not.