. App.js //import './App.css'; import { Component } from 'react'; import StateExample from './03/StateExample'; import Mypage from './03/Mypage'; import Login from './03/Login'; class App extends Component { constructor(props){ super(props); this.state = { isLogin: false, count: 0, userId: "simwj227", userEmail: "simwj0227@gmail.com" }; this.loginHandler = this.loginHandler.bind(this); this.setU..