Node.js MongoDB Drop

✅ Node.js MongoDB Drop

Dropping means permanently deleting a database or collection.

MongoDB provides two drop options:

Drop a Collection
Drop a Database

⭐ 1. Drop a Collection

This deletes the entire collection and all documents inside it.

Example: Drop the `customers` collection

If the collection does not exist, MongoDB will throw an error.
To avoid errors, check if the collection exists:

const collections = await db.listCollections({ name: "customers" }).toArray();

if (collections.length > 0) {
await db.collection("customers").drop();
console.log("customers collection dropped");
} else {
console.log("customers collection does not exist");
}

const collections = await db.listCollections({ name: "customers" }).toArray();

if (collections.length > 0) {

await db.collection("customers").drop();

console.log("customers collection dropped");

} else {

console.log("customers collection does not exist");

}

⭐ 2. Drop a Database

⚠ This removes ALL collections in the database.

Example: Drop the database `mydb`

⭐ 3. Full Example Program

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

const url = "mongodb://localhost:27017/";
const client = new MongoClient(url);

async function run() {
try {
await client.connect();
console.log("Connected to MongoDB");

const db = client.db("mydb");

// Drop a collection
const collection = db.collection("customers");
const dropResult = await collection.drop();
console.log("Collection Dropped:", dropResult);

// Drop entire database (optional)
// const dbResult = await db.dropDatabase();
// console.log("Database Dropped:", dbResult);

} finally {
await client.close();
}
}

run();

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

const url = "mongodb://localhost:27017/";

const client = new MongoClient(url);

async function run() {

try {

await client.connect();

console.log("Connected to MongoDB");

const db = client.db("mydb");

// Drop a collection

const collection = db.collection("customers");

const dropResult = await collection.drop();

console.log("Collection Dropped:", dropResult);

// Drop entire database (optional)

// const dbResult = await db.dropDatabase();

// console.log("Database Dropped:", dbResult);

} finally {

await client.close();

}

run();

⭐ Summary Table

Task	Method
Drop Collection	`collection.drop()`
Drop Database	`db.dropDatabase()`

Node.js MongoDB Drop