103. Build Reusable Middleware in Node.js – JSON Parser, Auth & SPA Routing Explained!

Описание: Learn how to build reusable middleware functions in Node.js to simplify and clean up your backend code!
In this video, we’ll create three powerful middleware functions:

✅ JSON Body Parser – Automatically parse incoming application/json bodies
✅ Authentication Middleware – Verify users using token-based auth and cookies
✅ Index.html Middleware – Serve your frontend index.html for client-side routing (SPA)

Whether you're building a fullstack app or want to understand how frameworks like Express work under the hood, this is a practical, beginner-friendly walkthrough.

🛠 Technologies:

Node.js (no frameworks)
HTTP Module
Cookies for Auth
Custom Middleware Functions
🔒 Bonus: We’ll also talk about handling large JSON bodies in production-ready apps.

👉 Perfect for developers who want to understand middleware and routing at a deeper level!

Github Link:
HireAPI Node Project: https://github.com/leelawebdev/hireapi

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