run react js code example

Example 1: new create react app

npx create-react-app my-app
cd my-app
npm start
//Note:npx on the first line is not a typo — 
//it’s a package runner tool that comes with npm 5.2+.

Example 2: create react app

//open terminal and run this code
create-react-app newreact
//it will install all the packages

Example 3: create new react app

Create new react app