We've covered the essentials of Express.js

Why use Express.js?

We learned its role, benefits over plain Node.js, and various use cases.

Setting up an Express application

We installed Express.js, created a simple app, and explored its basic structure.

Creating routes and handling requests

We mastered route creation, handling different HTTP methods, and managing URL parameters.

Middleware in Express

We understood middleware, created custom ones, used built-in middleware, and discussed execution order.