react 기본구조

React STEP 19 - Create React App - 1

⭐ 기본 구조 이해하기 1. src/index.js import React from 'react'; import ReactDOM from 'react-dom/client'; import './index.css'; import App from './App'; import reportWebVitals from './reportWebVitals'; const root=ReactDOM.createRoot(document.getElementById("root")); root.render( ); // If you want to start measuring performance in your app, pass a function // to log results (for example: reportWebVitals..