JavaScript is an important technology for development on many different platforms, including web, mobile app, and server programming. In Visual Studio 2013 we already support IntelliSense, Go to Definition, colorization, and formatting of JavaScript source, along with several other features. We’ve carried these forward into Visual Studio 2015 and we’ve improved the experience for JavaScript developers by focusing on three key areas:

1. Improving the development experience when using popular JavaScript libraries
2. Adding support for new JavaScript ECMAScript 2015 (also known as ES2015 and formerly ES6) language and web browser APIs
3. Increasing your productivity in complex JavaScript code bases