Updating documents in MongoDB using Node.js can be done with:

1. ✅ Native MongoDB Driver

2. 🪄 Mongoose (if you're using schemas)

Let’s see both in action 👇

✅ 1. Using the Native MongoDB Driver

📦 Install MongoDB driver

bash
npm install mongodb

✍️ Update Code Example

js
const { MongoClient } = require('mongodb');const uri = 'mongodb://localhost:27017';const client = new MongoClient(uri);async function updateUser() {  try {    await client.connect();    const db = client.db('myDatabase');    const users = db.collection('users');    // 👉 Update one user    const updateOne = await users.updateOne(      { name: 'Alice' },                 // Filter      { $set: { age: 30 } }              // Update    );    console.log('Updated one:', updateOne.modifiedCount);    // 👉 Update many users    const updateMany = await users.updateMany(      { age: { $lt: 25 } },      { $set: { status: 'young' } }    );    console.log('Updated many:', updateMany.modifiedCount);  } finally {    await client.close();  }}updateUser();

🪄 2. Using Mongoose

📦 Install Mongoose

bash
npm install mongoose

✍️ Update Code Example

js
const mongoose = require('mongoose');mongoose.connect('mongodb://localhost:27017/myDatabase')  .then(() => console.log('Connected'));const userSchema = new mongoose.Schema({ name: String, age: Number, status: String });const User = mongoose.model('User', userSchema);async function updateUserMongoose() {  // 👉 Update one user  await User.updateOne({ name: 'Bob' }, { $set: { age: 32 } });  // 👉 Update many users  await User.updateMany({ age: { $lt: 20 } }, { status: 'teen' });  console.log('Updates complete');  mongoose.disconnect();}updateUserMongoose();

🔧 Useful MongoDB Update Operators

🧠 Bonus: Update & Return the New Doc (Mongoose)

js
const updated = await User.findOneAndUpdate(  { name: 'Alice' },  { age: 35 },  { new: true } // returns the updated document);console.log(updated);

Let me know if you’d like to:

• Create an update API route

• Use dynamic update values

• Validate data before update