Answers for "how to connect to mongodb database in node js mongoose"

connecting to mongoDB using mongoose

//Import the mongoose module
var mongoose = require('mongoose');

//Set up default mongoose connection
var mongoDB = 'mongodb://127.0.0.1/my_database';
mongoose.connect(mongoDB, {useNewUrlParser: true, useUnifiedTopology: true});

//Get the default connection
var db = mongoose.connection;

//Bind connection to error event (to get notification of connection errors)
db.on('error', console.error.bind(console, 'MongoDB connection error:'));

Mongoose db connect

mongoose.connect('mongodb://username:password@host:port/database?options...', {useNewUrlParser: true});