Ask HN: Equivalent of "Learn X the Hard Way" for Javascript?

I've enjoyed working through Zed Shaw's "Learn C the Hard Way" as a way of refreshing my C skills; while I can't vouch for this method's effectiveness for beginning programmers, it's been great for me to re-familiarize myself with a language I haven't touched in a while. I'm looking forward to trying the same thing with Ruby (as I only have a "working knowledge with Chef" of that language). Is anyone aware of a similar set of decent-quality building-up lessons for Javascript?