Code Sandbox You can use this page to download source code and solutions to exercises for the book Eloquent JavaScript, and to directly run code in the context of chapters from that book, either to solve exercises to simply play around.
These are the sources used to build the second edition of Eloquent JavaScript (http://eloquentjavascript.net).
Update: June 7, 2016
There are many more chapters in the original text, but I've chosen to stop annotating at chapter 6.
Through the annotations and talking with many of my peers, I've learned a lot about the challenges of learning JavaScript on your own. I have discovered a more modern and practical way to learn JavaScript that replaces chapters 7 through 22 without having to spend hundreds of hours annotating the rest of the book. If you are like me I highly recommend practical-javascript by Gordon Zhu. Hit up this repo for more details