The primary worldwide forum for discussion (in English) of JavaScript is the Usenet newsgroup comp.lang.javascript. As with many Usenet newsgroups, this one can have a lot of traffic, and can sometimes be difficult to keep up with.
If you don't care for the quality or quantity of discussion that occurs in such a large, widely distributed forum, you may prefer to try to find (or start!) a smaller mailing list or chat room dedicated to the discussion of JavaScript. One of the main JavaScript mailing lists (with a moderately large volume of traffic) is hosted by inquiry.com. See the list homepage for directions on how to subscribe to this list:
Note that this mailing list is also available in digest form, which can be very convenient.If you are a member of Netscape's DevEdge developer's program, you might also try the JavaScript newsgroup hosted by Netscape:
Note that this newsgroup uses the "secure news" snews: protocol rather than the traditional news:.