3.render函数中，返回的JSX只能有一个根元素。 - yiqunkeke/react-jianshu-shangguigu-zty GitHub Wiki

import React, { Component, Fragment } from "react";

class TodoList extends Component {
  render() {
    return (
      <Fragment>
        <div>
          <input type="text" />
          <button>提交</button>
        </div>
        <ul>
            <li>学英语</li>
            <li>学React</li>
        </ul>
      </Fragment>
    );
  }
}

export default TodoList;