This is an archived snapshot of W3C's public bugzilla bug tracker, decommissioned in April 2019. Please see the home page for more details.
https://dom.spec.whatwg.org/#dom-document-createevent The table in this section points to [UIEVENTS] for MouseEvent, but that spec only defines KeyboardEvent. I'm having trouble figuring out which spec is actually the right one.
I think it might be DOM Level 3 Events at the moment, but there's a dispute over what it should be called (mainly caused by yours truly). Guess I'll wait until that settles before doing anything here.