start app react code example

Example 1: create react app install

RUN IN CMD

npm install -g create-react-app

Example 2: react start new app

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

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