기록하는 개발자

import React, { useEffect, useState } from "react"; import ReactDOM from "react-dom"; import "./styles.css"; const useTitle = (initialTitle) => { const [title, setTitle] = useState(initialTitle); const updateTitle = () => { const htmlTitle = document.querySelector("title"); htmlTitle.innerText = title; }; useEffect(updateTitle, [title]); return setTitle; }; export default function App..