Create and Run a React App | React JS Masterclass #4
If you want to build a new app or website with React, we recommend starting with a framework.
Setting up a React Environment
If you have npx and Node.js installed, you can create a React application by using create-react-app.
Run this command to create a React application named my-react-app:
npx create-react-app my-react-app
If you've previously installed create-react-app globally, it is recommended that you uninstall the package to ensure npx always uses the latest version of create-react-app.
The create-react-app will set up everything you need to run a React application.
Run the React Application
Now you are ready to run your first real React application!
Run this command to move to the my-react-app directory:
cd my-react-app
Run this command to run the React application my-react-app:
npm start
A new browser window will pop up with your newly created React App! If not, open your browser and type localhost:3000 in the address bar.
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