express-snippet.js

const express = require("express");

const app = express();

/**
 * See https://expressjs.com/en/guide/routing.html#app-route
 */
app.route('/book')
  .get(function (req, res) {
    res.send('Get a random book');
  })
  .post(function (req, res) {
    res.send('Add a book');
  })
  .put(function (req, res) {
    res.send('Update the book');
  })
  .delete(function(req, res) {
    res.send('Deleted a book');
  });