The Road to React: The One with Class Components/

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ReactDOM

ReactDOM

A brief introduction to ReactDOM and render() method in React application.

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The App component is located in your entry point to the React world: the src/index.js file.

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import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';
import './index.css';
ReactDOM.render(
  <App />,
  document.getElementById('root')
);

ReactDOM.render() uses a DOM node in your HTML to replace it with JSX. It’s a way to integrate React in any foreign application easily, and you can use ReactDOM.render() multiple times across your application. You can use it to bootstrap simple JSX syntax, a ...