run a react application code example

Example 1: create react app

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

Example 2: create a new project with create-react-app

npx create-react-app project-name

Example 3: how to create react app using yarn

yarn create react-app my-app

Example 4: create-react-app npm yarn

to override yarn
npx create-react-app my-app --use-npm