Simple way to Connect mongoDB with core Node.JS

var MongoClient = require('mongodb').MongoClient;
  
  //connection with mongoDB
  MongoClient.connect("mongodb://localhost:27017/MyDb", function (err, db) {
        //check the connection
if(err){
         console.log("connection failed.");      
}else{
                  console.log("successfully connected to mongoDB.");
  });