To use React js in production we need to set up React js in Node.js environment. it is very simple to set React js in Node.js environment
All the set of React js has been done in VS code editor. so jus open Vs code editor and run the following command in terminal
npm install -g create-react-app
npx create-react-app myfirstreact
cd myfirstreact
npm start
After that a new window of React js will get open in your default choose browser. if you face any issue then simply just open your localhost at 3000 port in search bar of favourite browser
localhost:3000