1. Easy to Setup: Express.js makes it easy to set up an application with minimal effort. All you need to do is install the Express.js package and create a single JavaScript file. From there, you can start building your application.
2. Robust Routing: Express.js makes it easy to create robust routing for your application. You can define routes for different HTTP methods and URLs, and you can even define middleware functions for pre- and post-processing.
3. Highly Scalable: Express.js is highly scalable and can handle large amounts of traffic. It can also be used to create real-time applications with WebSockets.
4. Rich Ecosystem: Express.js has a rich ecosystem of packages and middleware that can be used to extend the functionality of the framework.
5. Fast Performance: Express.js is fast and can handle large amounts of requests quickly.
Example:
const express = require(‘express’);
const app = express();
// define a route
app.get(‘/’, (req, res) => {
res.send(‘Hello World!’);
});
// start the server
app.listen(3000, () => {
console.log(‘Server is listening on port 3000’);
});