index.js

var express = require('express');
var app = express();

app.get('/yes', function (req, res) {
  res.send('thanks!');
  console.log('student got it, stop vib');
});

app.get('/no', function (req, res) {
  res.send('thanks!');
  console.log('student didnt get it, vibrate');
});

var server = app.listen(3000, function () {
  var host = server.address().address;
  var port = server.address().port;
  
  console.log('Example app listening at http://%s:%s', host, port);
});