W3Schools Tryit Editor

main.jsx

index.html

import { createRoot } from 'react-dom/client'
import { useState } from 'react'

function MyForm() {
  const [name, setName] = useState("John");

  return (
    <form>
      <label>Enter your name:
        <input
          type="text" 
          value={name}
          onChange={(e) => setName(e.target.value)}
        />
      </label>
      <p>Current value: {name}</p>
    </form>
  )
}

createRoot(document.getElementById('root')).render(
  <MyForm />
);

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