set up react app code example

Example 1: command to create react app

npx create-react-app my-app
cd my-app
npm start

Example 2: install react js

npx create-react-app <appname>  //  eg:  npx create-react-app blog
cd <appname>  // cd blog
npm start  //runs on localhost:3000

Example 3: npm create react app

npx --ignore-existing create-react-app .