Well I have completed lots of tutorials over the years but this Roguelike Javascript tutorial is one of the finest if not the best.

http://www.codingcookies.com/2013/04/01/building-a-roguelike-in-javascript-part-1/

Whats makes this series so good is the clean and elegant solution provided and its a great way to learn JS along the way…

 Well done Dominic (and I am not thanking myself)