Forms في React

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

  function handleSubmit(e) {
    e.preventDefault();
    alert("Hello, " + name);
  }

  return (
    <form onSubmit={handleSubmit}>
      <input
        type="text"
        value={name}
        onChange={e => setName(e.target.value)}
      />
      <button type="submit">Submit</button>
    </form>
  );
}