Welcome to the Express Router tutorial! In this lesson, we'll explore how to use the Express Router, a powerful tool for building modular and maintainable Node.js applications. Let's dive in!
The Express Router is a built-in middleware in Express.js that helps us manage and organize our routes effectively. It allows us to create multiple routes and their corresponding handlers for different URL patterns in a more organized and reusable way.
To set up a router, first, we need to import it from Express.js:
const express = require('express');
const router = express.Router();Creating a router instance is as simple as that! Now, let's move on to creating routes.
Routes define which HTTP requests (GET, POST, PUT, DELETE, etc.) should be handled by which function. To create a route, we use the .get(), .post(), .put(), and .delete() methods on the router instance. Let's create a simple GET route:
router.get('/', (req, res) => {
res.send('Welcome to our application!');
});In the above example, we've created a route that handles GET requests to the root URL ('/') of our application. When a user visits this URL, they will receive the message 'Welcome to our application!'.
To use our router, we need to "mount" it to an Express application. This is done using the .use() method:
app.use('/', router);In the above example, we've mounted our router to the root URL ('/') of our Express application.
Let's create a simple project to demonstrate the usage of the Express Router. We'll build a basic To-Do List application where users can create, read, update, and delete tasks.
What is the purpose of the Express Router?
Stay tuned for the next part where we'll dive deeper into creating, reading, updating, and deleting tasks in our To-Do List application! 🚀
This tutorial is part of the Node.js series on CodeYourCraft, where we guide you on building powerful and scalable applications using Node.js and Express.js.