how to connect mongodb and nodejs with mongoose code example
Example 1: 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:'));
Example 2: mongoose connection nodejs
const mongoose = require('mongoose');
const connectDB = async () => {
mongoose
.connect('mongodb://localhost:27017/playground', {
useCreateIndex: true,
useNewUrlParser: true,
useUnifiedTopology: true,
useFindAndModify: false
})
.then(() => console.log('Connected Successfully'))
.catch((err) => console.error('Not Connected'));
}
module.exports = connectDB;