node.js - Connect to MongoDB with authentication using Node JS -

i trying connect mongodb user/password , did far:

var mongoclient = require('mongodb').mongoclient;  // connect db mongoclient.connect("mongodb://${host}:27017/${db}", function(err, db) {   if(!err) {     console.log("successfully connected database");   }else{     console.log("error on connecting... aborting , exiting");     return console.dir(err);     throw err;    }      db.authenticate('username', 'password', function(err, res) {     console.log("reached here");                       }); }); 

now trying login inside data base in order able inside mongo database's collections, how can that?

thanks!

you can perform curd operations following:

var mongoclient = require('mongodb').mongoclient;  // connect db mongoclient.connect("mongodb://${host}:27017/${db}", function(err, db) {   if(!err) {     console.log("successfully connected database");       //here can perform operation     var collection = db.collection('test');     var doc1 = {'hello':'doc1'};     var doc2 = {'hello':'doc2'};      collection.insert(doc1);   }else{     console.log("error on connecting... aborting , exiting");     return console.dir(err);     throw err;    }      db.authenticate('username', 'password', function(err, res) {     console.log("reached here");                       }); });