React Setup

First things first, where to start!

• Install Node.js
• Install yarn: brew install yarn
• Run: yarn create react-app hello-world
• Run: yarn start

Import React and ReactDOM

import React from 'react'
import ReactDOM from 'react-dom'

Render JSX into a DOM element

ReactDOM.render( <h1>Hello, world!</h1>, document.getElementById('root') );

Render Component into a DOM element

ReactDOM.render(
  <MyComponent />,
  document.getElementById('root')
);