Install WebStorm/PHPStorm

While you can use any basic text editor, I prefer to use an IDE that offers a more robust set of features such as code hinting, refactoring, project management, version control integration, and a debugger. JetBrains has two IDEs that both handle JavaScript/HTML5 development. If you only plan on doing JavaScript development, I would suggest using WebStorm. If you need to do HTML5 and PHP development (which comes in handy since Impact’s level editor uses PHP) you should look at PHPStorm.

Installing these applications is straightforward. Here are URLs for each IDE:

Each IDE has a 30-day trial and after the trial costs $99 for a license. There are a lot of resources out there on how to use each IDE, so I am not going to cover it here.