how can i create get api for specific id mongodb nodejs code example

Example: fetch api based on id nodejs and mongodb

// Import expresslet express = require('express');// Import Body parserlet bodyParser = require('body-parser');// Import Mongooselet mongoose = require('mongoose');// Initialise the applet app = express();// Import routeslet apiRoutes = require("./api-routes");// Configure bodyparser to handle post requestsapp.use(bodyParser.urlencoded({    extended: true}));app.use(bodyParser.json());// Connect to Mongoose and set connection variablemongoose.connect('mongodb://localhost/resthub', { useNewUrlParser: true});var db = mongoose.connection;// Added check for DB connectionif(!db)    console.log("Error connecting db")else    console.log("Db connected successfully")// Setup server portvar port = process.env.PORT || 8080;// Send message for default URLapp.get('/', (req, res) => res.send('Hello World with Express'));// Use Api routes in the Appapp.use('/api', apiRoutes);// Launch app to listen to specified portapp.listen(port, function () {    console.log("Running RestHub on port " + port);});

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