[React] JavaScriptのクラスとReact - Qiita

import React from 'react'; class App extends React.Component { constructor(props) { super(props); this.state = {name: '山田'}; } handleClick(f_name){ this.setState({name: f_name}); } render() { return ( <div> <h1>こんにちは、{this.state.name}さん！</h1> <button onClick={ () => {this.handleClick('山田')}}> 山田 </button> <button onClick={ () => {this.handleClick('田中')}}> 田中 </button> </div> ); } } export default