import React from 'react';
import ReactDOM from 'react-dom';
let arr = ['小明', '小红', '小花']
let arrHtml = [ < li > 小明 < /li>,<li>小红</li > ]
class Welcome extends React.Component {constructor(props) {super(props)this.state = {isLogin: true}}render() {return ( <div ><ul > { arrHtml } </ul> < /div >)}}//console.log("这是渲染函数")
ReactDOM.render( < Welcome / > , document.querySelector("#root"))

运行结果