app.get() vs. router.get()

app.get

app.get can be used to create routes for your application at the top level.

 

express.Router

From the documentation about express.Router;

Use the express.Router class to create modular, mountable route handlers. A Router instance is a complete middleware and routing system; for this reason, it is often referred to as a “mini-app”

A router needs to be mounted to an app.

 

@

expressjs.com/th/guide/routing.html

stackoverflow.com/questions/41836310/difference-between-app-get-or-router-get-expressjs