The JavaScript Guy
latviancoder.com
latviancoder.com
On a more serious note, working with newer JS frameworks you'll always run into the issue of long term maintenance. Why do I pick jQuery (most of the time) for projects that I won't solely maintain? It's easy to hire for, it has a big enough community to support and there are a decent number of developers that know jquery (and/or can easily go from JS->jquery). I would try to move some items to jquery-like functionality as you go from prototype to production.
Anyway, I somehow have this feeling that JavaScript is 2nd-level language and I'm not so proud that I'm the only one that knows it good enough. I would be much prouder if I would be "The Python guy" or, hell, let it be "The PHP guy" even...
I'm a .NET developer, but I often find myself working with front-end code because I know it fairly well. I also find myself being the main person to write JavaScript.
Don't get me wrong, I like being good at something and I'll keep working at it to become better, but I find JS to be so annoying at times! I feel that I'm only good with it because I've taken the time to read about it, and because I'm able to take lessons from writing back-end code and apply what seem to be obvious lessons to writing JS (i.e. cache jQuery lookups, name functions to aid stack traces, etc). The reason I learned to write JS well was because the overuse of JS annoys me so much, especially when no legacy brower fallback is provided, or when the overuse of plugins causes the page size to be huge.
What's even more annoying is that ever since LinkedIn added those stupid endorsements my main endorsement by far is JavaScript! Now, potential employers will view me as good with JavaScript over anything else.
JS is a good thing to know, but sometimes a part of me dies when I'm referred to as "the best with JS". I'd prefer to be "the best with C#", or "the best with Python", but I'll take what I can get.