Overview

Day 72 focuses on understanding the fundamentals of Express.js routing and learning what a REST API is. Today's work covered creating multiple routes, sending JSON responses, and understanding how API endpoints work.

What I Learned Today

• What routing is in Express.js
• How to create different endpoints (GET, POST, PUT, DELETE)
• What REST API means and why it's used
• How to return JSON data from an API
• How request and response objects work

Key Concepts

Express Routing

• Route handlers respond to specific URL paths
• Methods include app.get, app.post, app.put, app.delete

REST API

• Representational State Transfer
• Uses HTTP methods to perform actions
• Common operations: Create, Read, Update, Delete

Request and Response

• req contains data sent by the client