Session 3: Express.js Query Parameters & Middleware Explained with Examples | Node.js Tutorial
Notes: https://docs.google.com/document/d/1z...
In this video, we break down Query Parameters and Middleware in Express.js with beginner-friendly explanations and practical code demos.
✅ What you’ll learn:
What query parameters are and how they look in a URL
How to access query parameters in Express (req.query)
Setting default values and type conversion (string → number)
Safely using query parameters in SQL queries
What middleware is and how it works in Express.js
Real examples: logging, validation, authentication, and more
This tutorial is perfect for anyone learning Node.js & Express.js and preparing for backend development interviews.
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