Routing in Express.js (Node.js) - "app" & express.Router, route params, query, body, etc.

ROUTING IN EXPRESS.JS
Routing is about how the application handles requests from clients (e.g. browsers) for the given URI path (e.g. /users) and HTTP request method (e.g. GET, POST, etc.).
Docs: expressjs.com/en/guide/routin...