On all desktop browsers that I’ve tested (as well as iOS and Android) events are fired for each keystroke. This is useful if you wish to perform a task as a user types input, for example autocompletion hinting. On the PlayBook however, the event is only fired when a
spacekey is entered and a word is completed. This seems to be the case for
keypressevents on OS2, I can’t confirm whether this is new in OS2 or if its always been the case.