Absolutely. In Emacs, I depend heavily on etags and the occasional rgrep to find my way around a fairly large project written mostly in C. I haven't dealt wit

Absolutely. In Emacs, I depend heavily on etags and the occasional rgrep to find my way around a fairly large project written mostly in C. I haven't dealt with a JavaScript project large enough that I've bothered setting up tags, but I imagine something similar is available.