Express middleware router-level

routerLevelMiddleware.js

// server.js
var express = require('express');
var app = express();
var router = express.Router();

function date(req,res,next) {
  console.log("Date is", Date());
  next()
}
function foo1(req,res,next) {
  console.log("App started#"); 
  //res.send("App started#"); 
  next();
}
function foo2(req,res,next) {
  console.log("Request URl is::", req.originalUrl);
  next();
}
function foo3(req,res,next) {
  console.log("Request Type:", req.method);
  next();
}
function cats(req,res,next) {
  console.log("Cast of cats welcomes you");
  res.send("Cast of cats welcomes you");
}
router.use(date);
router.use("/", foo1, foo2, foo3);
router.use("/cats", cats);

app.use("/meta", router);
// listen for requests :)
var listener = app.listen(process.env.PORT, function () {
  console.log('Your app is listening on port ' + listener.address().port);
});