You are probably drastically underestimating the marketability of "can write production-ready JavaScript given sufficient time browsing docs & without copying it directly from StackOverflow."

And I only say "probably" because it sounds like you're looking for a local W-2 gig, and there are some places (e.g. rural Idaho) where there's likely to be a shortage of potential employers.

Elsewhere, consider "any company with senior programmers to report to" as a location which is probably hiring, or at least entertaining applicants - regardless of what any public listings may say about what openings exist, or how much experience or what madcap assortment of skills any job postings say that they'd like (yes, like).

You don't have to quit right this moment, but you can use the knowledge that you are quitting to change how you deal with your current job; you can keep your head down and chug away for a little while, calmly oblivious to politics and promotion and overtime and all that stuff, because you know you're not staying.