JetBrains WebStorm is the officially recommended Dart editor. See the Dart Tools page for other options (most of them free). Dart Tools and IDEs. For ideas on what editor you should use to work on a Dart project, or to learn more about Dart's awesome

The standalone Dart VM, which you can use to execute Dart code. IDEs that support Dart, and some of the pub commands, use this command behind-the-scenes to execute Dart scripts. Note that you must configure your IDE with the location of the dart binary. d

Optionally, improve the formatting by editing web/styles.css, then reload the app to check your changes. #output { padding: 20px; text-align: left;} 7. Use Dart DevTools to inspect the app. Use Dart DevTools to set breakpoints, view values and types, and