This document discusses the benefits of using JavaScript as a universal language. It can be used everywhere due to its huge reach and ability to run on any browser or device. The document then discusses various JavaScript tooling options available in Visual Studio 2013 like WebEssentials, TypeScript, and Node.js tools. It also demonstrates how JavaScript can be used on the server side with Node.js and Azure Mobile Services. Finally, it mentions using JavaScript to build Windows 8, Windows Phone, and universal apps.