(실습_리액트18)시계만들기_코드_index.js

import React from 'react';
import ReactDOM from 'react-dom/client';
import './index.css';
import App from './App';
import reportWebVitals from './reportWebVitals';

import Library from './chapter_03/Library';
import Clock from './chapter_04/Clock';

const root = ReactDOM.createRoot(document.getElementById('root'));
setInterval(() => {
  root.render(
  <React.StrictMode>
    <Clock />
  </React.StrictMode>
);
  },1000);