참고사이트 https://www.youtube.com/playlist?list=PLuHgQVnccGMCRv6f8H9K5Xwsdyg4sFSdi React - YouTube www.youtube.com 2020/05/04 - [react/기초] - react 설치, 개발환경구축 - public index.html id root가 중요 - src index.js ( App.js와 root id를 render해줌 ) import React from 'react'; import ReactDOM from 'react-dom'; import './index.css'; import App from './App'; //.js 생략 import * as serviceWorker from './serviceWorker'; ..
