Hello World

Before we begin.

You must have the dart SDK installed on your computer.

Run the following command in your terminal to test that you have installed dart properly.

dart --version
 
> Dart SDK version: 3.4.4 (stable) (None) on "linux_x64"

Set up H4.

Run the command below to get started.

dart pub global activate h4

Now, let's bootstrap your first app.

dart pub global run h4:init

After answering the prompts, the directory containing your app will have a file structure like this..

Navigate to index.dart. Some code is already there.

import 'package:h4/create.dart';
 
void main() async {
  var app = createApp(port: 5174);
  var router = createRouter();
  app.use(router);

  router.get("/", (event) => 'Hello world!')
}

You're all set! Let's run our server in dev mode.

dart pub global run h4:start --dev

Visit - http://localhost:5173 with your browser and voila! Hello world!

Let's now build a basic app with H4.