text: /**
   * something about routes.
   * https://expressjs.com/zh-cn/starter/faq.html
   */
  const express = require('express');
  
  const router = express.Router();
  
  /* GET home page. */
  router.get('/', (req, res, next) => {
    res.render('index', { title: 'Express' });
  });
  
  module.exports = router;
  