const [isSubscribed, setIsSubscribed] = useState(false);

​

  const handleChange = event => {

    if (event.target.checked) {

      console.log('✅ Checkbox is checked');

    } else {

      console.log('⛔️ Checkbox is NOT checked');

    }

    setIsSubscribed(current => !current);

  };

  return (

        <input

          type="checkbox"

          value={isSubscribed}

          onChange={handleChange}

          id="subscribe"

          name="subscribe"

        />

  );