We have a nice JavaScript room at https://chat.stackoverflow.com/rooms/17/javascript for the past 6 years.

Our only rule is "don't be a dick". A lot of things are offtopic but we have some pretty profilic regulars and ex regulars include some big names in JavaScript.

Everything is under reasonable (but not restrictive) code of conduct (slightly more relaxed than StackOverflow).

It's not all on topic - and it's not targeted at newbies - but you're very welcome to join.