Isaac Pierce | Devbullets

• Express Router is a middleware for creating modular route handlers.
• It groups route handlers based on common parts of the route paths / uri (endpoints).
• It provides methods for all HTTP verbs[1].
• It allows variables to be stored in the route -> route parameters.
• route parameters are proceeded by a colon -> :id.
• It stores the parameters in req.params.
• MDN

Example code:

const express = require('express');
const songRouter = express.Router();

songRouter
  .route('/song')
  .get((req, res) => {
   /* do stuff */
  })
  .post((req, res) => {
    /* do stuff */
  });
   .delete((req, res) => {
    /* do stuff */
  });

songRouter
  .route('/song/:id')
  .get((req, res) => {
    /* do stuff */
  })
  .post((req, res) => {
    /* do stuff */
  });
   .delete((req, res) => {
    /* do stuff */
  });

module.exports = songRouter;

[1] Main HTTP verbs:

get(), post(), put(), delete(), options(), patch(), head(),connect().