node js - connection config to mongodb

// By: facebook.com/muhammad.sukron.52
// require package mongodb

var MongoClient = require('mongodb').MongoClient;
var MONGODB_URL = 'mongodb://localhost:27017/test';

MongoClient.connect(MONGODB_URL, function(err, db) {
    err ? console.log(err) : console.log('connection successfully');
    db.close();
});