https://stackoverflow.com/a/3396805

NOTE KeyPress is now deprecated. Use KeyDown instead.

KeyPress, KeyUp and KeyDown are analogous to, respectively: Click, MouseUp, and MouseDown.

1. Down happens first
2. Press happens second (when text is entered)
3. Up happens last (when text input is complete).

The exception is webkit, which has an extra event in there:

keydown
keypress
textInput     
keyup

Below is a snippet you can use to see for yourself when the events get fired:

window.addEventListener("keyup", log);
window.addEventListener("keypress", log);
window.addEventListener("keydown", log);

function log(event){
  console.log( event.type );
}

566200cookie-checkonKeyPress Vs. onKeyUp and onKeyDownno