React-键盘事件示例

import React from "react";import 'bootstrap/dist/css/bootstrap.min.css';const infoMap = { msgInit: '通过键盘在文本框输入字符后在浏览器Console中显示对应的ASCII码', alertInfo: '按回车键，msg值为：',}class KeyBind extends React.Component { constructor(props) { super(props); this.state = { msg: infoMap.msgInit, } } keyUp = (e) => { console.log(e.keyCode); if (e.keyCode === 13) { alert(infoMap.alertInfo + e.target.value); } } render { return (

{infoMap.msgInit}

按回车键，效果：