server.js

// Tracking API
app.get('/logWrite', function(request, response) {
  // Lấy id người dùng thông qua cookie 
  const userId = request.cookies.id;
  const referrer = request.header('Referer').replace(/\/$/, "");;
  const time = new Date();
  
  const log = {userId, referrer, time};
  
  // Ghi log vào database
  db.log.insert(log, (err, result) => {    
    response.header('Access-Control-Allow-Origin', referrer);
    response.header('Access-Control-Allow-Credentials', 'true');
    response.json(result);
  });
});