JavaScript documentation surrounding version 1.5, 1.6 (supported by Firefox 1.5 and Mozilla 1.8), and version 1.7 (supported by Firefox 2.0). Backed up by mailing lists, newsgroups and an IRC channel
A reference manual for the core JavaScript language for version 1.5. Covers the standard base objects, methods and properties, including RegExp, and Java-related objects. Archive copy of Netscape's reference published in September 2000.
An index of JavaScript's core methods, ordered by method name. No DOM methods are listed, but Browser Object Model (BOM) is.