import React from "react"; import ReactDOM from "react-dom/client"; function Hello(props) { return <h1>Hello World!</h1>; } const container = document.getElementById('root'); const root = ReactDOM.createRoot(container); root.render(<Hello />); /* The examples in this tutorial are created using the create-react-app. Install the create-react-app, and you will be able to run the same examples on your computer. In this example we create a component called 'Hello'. The component is rendered in a container called 'root'. */