React Hooks_useTitle

const useTitle = (initialTitle) => {
  const [title, setTitle] = useState(initialTitle);
  const updateTitle = () => {
    const htmlTitle = document.querySelector('title');
    htmlTitle.innerText = title;
  };
  useEffect(updateTitle, [title]);
  return setTitle;
};

const App = () => {
  const titleUpdater = useTitle('Loading...');
  setTimeout(() => titleUpdater('Home'), 5000);
  return (
    <div className="App">
      <div>Hi</div>
      <button onClick={() => setNumber(number + 1)}></button>
      <button onClick={() => setAnumber(aNumber + 1)}></button>
    </div>
  );
};