How do I perform update queries in MongoDB using Node.js?

How do I perform update queries in MongoDB using Node.js?

You can use the updateOne or updateMany methods from the MongoDB Node.js driver to perform update queries. Would you like an example?

Yes, please provide an example of using updateOne.

Sure! Here's a basic example:

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

async function updateDocument() {
    const client = new MongoClient('your_mongodb_uri');
    await client.connect();
    const database = client.db('your_database');
    const collection = database.collection('your_collection');

    const filter = { name: 'John' };
    const updateDoc = { $set: { age: 30 } };

    const result = await collection.updateOne(filter, updateDoc);
    console.log(`${result.modifiedCount} document(s) was/were updated.`);
    await client.close();
}
updateDocument();

What if I want to update multiple documents at once?

You can use the updateMany method for that. Here's an example:

const filter = { status: 'pending' };
const updateDoc = { $set: { status: 'completed' } };

const result = await collection.updateMany(filter, updateDoc);
console.log(`${result.modifiedCount} documents were updated.`);