MongoDB — Node.js

Installation

npm install mongodb

Connect

const { MongoClient } = require('mongodb');

const uri = 'mongodb://localhost:27017';
const client = new MongoClient(uri);

async function connect() {
  await client.connect();
  console.log('Connected');
}

CRUD Operations

// Insert
await db.collection('users').insertOne({ name: 'John' });

// Find
const users = await db.collection('users').find({}).toArray();

// Update
await db.collection('users').updateOne({ name: 'John' }, { $set: { age: 30 } });

// Delete
await db.collection('users').deleteOne({ name: 'John' });

Mongoose

npm install mongoose

const mongoose = require('mongoose');

mongoose.connect('mongodb://localhost:27017/mydb');

const userSchema = new mongoose.Schema({
  name: String,
  email: String
});

const User = mongoose.model('User', userSchema);

Mini Practice

1. Connect with MongoDB driver
2. Perform CRUD operations
3. Use Mongoose
4. Handle errors

Up Next

Continue with Python — MongoDB with Python.