I don't think a bootcamp is going to be able to teach you to be "good at" javascript (or any other language). Think back to when you'd been programming for 1 or 2 months. I'd wager there were lots of things that didn't totally make sense and some magic here and there that you didn't fully understand. It takes time - more time than a bootcamp has - to teach that deeper understanding which allows you to be "good." A bootcamp teaches you to be functional.