Creating an Express Router - Try It Yourself

Creating an Express Router

📖 Scenario: You are building a simple web server using Express.js. To keep your code organized, you want to separate the routes related to users into their own router.

🎯 Goal: Create an Express router for user-related routes and connect it to the main Express app.

📋 What You'll Learn

Create an Express router instance

Define a GET route on the router for path '/' that sends 'User list' as response

Create an Express app instance

Use the router on the '/users' path in the app

💡 Why This Matters

🌍 Real World

Express routers help organize routes in web servers by grouping related routes together. This makes code easier to read and maintain.

💼 Career

Knowing how to create and use Express routers is essential for backend developers working with Node.js and Express to build scalable web applications.

1

Set up Express and create a router

Write code to import Express and create a router instance called userRouter.

Express

// Your code here to import express and create userRouter

Need a hint?

Use require('express') to import Express and express.Router() to create the router.

2

Add a GET route to the router

Add a GET route on userRouter for path '/' that sends the text 'User list' as the response.

Express

const express = require('express');
const userRouter = express.Router();

// Add GET route on userRouter for '/' that sends 'User list'

Need a hint?

Use userRouter.get('/', (req, res) => { res.send('User list'); }) to define the route.

3

Create the Express app

Create an Express app instance called app by calling express().

Express

const express = require('express');
const userRouter = express.Router();

userRouter.get('/', (req, res) => {
  res.send('User list');
});

// Create Express app instance called app

Need a hint?

Call express() and assign it to app.

4

Use the router in the app

Connect the userRouter to the app so that all routes in userRouter are served under the path '/users'.

Express

const express = require('express');
const userRouter = express.Router();

userRouter.get('/', (req, res) => {
  res.send('User list');
});

const app = express();

// Use userRouter on '/users' path

Need a hint?

Use app.use('/users', userRouter) to mount the router.