W3Schools Tryit Editor

main.jsx

index.html

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

function Football() {
  const shoot = (a, b) => {
    alert(b.type);
		/*
		'b' represents the React event that triggered the function.
    In this case, the 'click' event
		*/
  }

  return (
    <button onClick={(event) => shoot("Goal!", event)}>Take the shot!</button>
  );
}

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

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