How can you read keyboard input in JS?

Question

I've seen codes that do this, but I don't know how to do it.

Answer 1

You can do it like this:

HTML:
<p onkeypressed = "key(event)"></p>

JS:
function key(event) {
x = event.which;
alert(x);
}

It will alert the number value of the key that was pressed down

Answer 2

Used attribute

Onkeyup="function-name()"

And after that
Get the value its