I am using Visual Studio 2015 for my angularjs app.

Intellisense works well here
[![enter image description here](https://i.stack.imgur.com/wBlZj.jpg)](https://i.stack.imgur.com/wBlZj.jpg)

but when I created an app.js file and try to write code there, intellisense does not work.

[![enter image description here](https://i.stack.imgur.com/FIn5l.jpg)](https://i.stack.imgur.com/FIn5l.jpg)

what did I miss here?
Add 1: This is the folder structure
[![enter image description here](https://i.stack.imgur.com/nORsq.jpg)](https://i.stack.imgur.com/nORsq.jpg)