crisp-game-lib
A JavaScript library for creating browser games quickly and easily. Created by Kenta Cho, the prolific game developer behind ABA Games.
Tag: javascript 
Tag: javascript
A JavaScript library for creating browser games quickly and easily. Created by Kenta Cho, the prolific game developer behind ABA Games.
An implementation of Love2D targetting the web via emscripten.
A Squeak VM written in JavaScript.
Interactive tutorials by Tim Holman on making generative art using JS.
A javascript animation library.
An interactive tutorial that teaches you Processing. Taught by Daniel Shiffman. Love his enthusiasm.
This is what Ian Bicking is currently prototyping. It uses another really cool project he's worked on at Mozilla called Together/JS. Hot dish (and TogetherJS) are tools that allow people to communicate with one another remotely while interacting with a web page or browser session.
Free online, interactive version of the book by Scott Murray.