text: import React from 'React';
  
  class NavTag extends React.Component {
  
      render() {
          return (
            <ul className="nav">
            <li><link to="movies">电影</link></li> //设置跳转
            <li><link to="books">图书</link></li>
            <li><link to="photo">照片</link></li>
            <li><link to="home">主页</link></li>
            </ul>
          );
      }
  }
  export default NavTag;//提供接口
  