react documentation

JavaScript
npx create-react-app <appname>  //  eg:  npx create-react-app blog
cd <appname>  // cd blog
npm start  //runs on localhost:3000# Good documentation:
https://reactnative.dev/docs/getting-started
https://devdocs.io/react_native///With node and npm already installed for basic start

npx create-react-app my-app-name

// if you want to use npm 

npx create-react-app my-app-name --npm

//if you want to use typescript 

npx create-react-app my-app-name --template typescript

yarn start // app will be hosted on localhost:3000

/* start making changes at ./my-app-name/src/App.js
	React documentation: https://reactjs.org/docs/hello-world.html
*/This is a formatted version of Komadori's answer 
(https://tinyurl.com/Komadori)
React is a JavaScript library for building user interfaces. 
It is maintained by Facebook and a community of 
individual developers and companies. 
React can be used as a base in the development of single-page 
or mobile applications.
npx create-react-app my-app
cd my-app
npm start
You have to download Node.js for this because you need NPM.class Board extends React.Component {
  renderSquare(i) {
    return <Square value={i} />;  }
}
Source

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