How to create a simple React App

Prerequisites

1. Node.js installed
2. A code editor (e.g. Visual Studio Code)

Creating a new React App

npx create-react-app my-app

Structure of a React App

The following files and directories are created:

• node_modules/: Contains the dependencies installed by npm.
• public/: Contains the static files (e.g. HTML, CSS, images).
• package.json: Contains the project’s metadata and dependencies.
• .gitignore: Contains the files that should be ignored by Git.
• src/: Contains the React components and code.

Starting the app

npm start

This will start a development server at http://localhost:3000.

Modifying the app

Open the src/App.js file and modify the following line:

return 
Hello, world!
;

to:

return 
Hello, {name}!
;

where {name} is a prop that you can pass to the App component.

Save the changes and the browser will automatically reload.

Conclusion

This was a quick introduction to creating a simple React app. For more information, please refer to the official React documentation.

Kind regards B. Guzman.

Robotics News & Trends

Commercial