firefox autocomplete key evnet

Firefox browser didn't well triggered key event
I searched googling and find it.

input keyup bind key event worked well at all browser.

$searchField = $("input[name='input_keyword']");

/**
* IE , chrome
* well done key event but firefox don't well
*/
$searchField.keyup(function(event){ onKeyEvent(event); });

/**
* firefox keyup event  input keyup bind trigger
*/
$searchField.bind("input keyup", function(event){ onKeyEvent(event); });