Nodejs MongoDB Select

var mdb = require('mongodb').MongoClient;  
var con = "mongodb://localhost:27017";  
mdb.connect(con,{ useNewUrlParser: true, useUnifiedTopology: true }, function(err, db) {  
if (err) throw err;  
var dbase = db.db("employee");

dbase.collection("employees").find({}).toArray(function(err, result) {  
    if (err) throw err;  
    console.log(result);  
    db.close();  
  });  


});