If you want to trigger the keypress or keydown event then all you have to do is:
var e = jQuery.Event("keydown");
e.which = 50; // # Some key code value
$("input").trigger(e);
If you want to trigger the keypress or keydown event then all you have to do is:
var e = jQuery.Event("keydown");
e.which = 50; // # Some key code value
$("input").trigger(e);