Game development with Javascript

The Intel® XDK provides a development environment for creating hybrid mobile apps, including 2D HTML5 games. Special Intel XDK features for game developers include a game asset manager, game-related plug-in APIs, game samples and templates for supported game engines, autocompletion hints in the built-in code editor, and standard features available to app developers using the Intel XDK, such as packaging apps for different platforms.

https://software.intel.com/en-us/html5/documentation/getstarted_gamedev

You can use different tools already available such as:

http://www.createjs.com/#!/EaselJS

http://cocos2d-x.org/docs/manual/framework/html5/v3/lite-version/en

http://phaser.io/

http://www.pixijs.com/