I need to know how to trigger an enter key on an input. That is, in response to some other event (not a keypress), I need to trigger a keypress of value 13.

(Clarification, I do not want to trigger some event when the enter key is pressed. If I didn't know how to do that, I could find that that's been asked and answered several times on SO. I want the reverse. I am trying to develop a workaround that requires I emulate an 'enter' keypress.)