W3Schools Tryit Editor

main.jsx

index.html

import React from 'react';
import ReactDOM from 'react-dom/client';

function Car() {
  return <h2>I am a Car!</h2>;
}

function Garage() {
  return (
    <>
	    <h1>Who lives in my Garage?</h1>
	    <Car />
    </>
  );
}

const root = ReactDOM.createRoot(document.getElementById('root'));
root.render(<Garage />);

<!doctype html>
<html lang="en">
  <body>
    <div id="root"></div>
    <script type="module" src="/src/main.jsx"></script>
  </body>
</html>