getCollectionNames - Javascript

The getCollectionNames command in Javascript is used to retrieve an array of collection names from a specified database. It takes the following syntax:

db.getCollectionNames()

This command is particularly useful for retrieving collection names when working with MongoDB databases. It returns an array of collection names as strings and requires no arguments to be passed to the command.

Example Usage

Here's an example of how you can use the getCollectionNames command in a Javascript program to retrieve all the collection names in a database:

const MongoClient = require('mongodb').MongoClient;

MongoClient.connect('<your MongoDB URI here>', function(err, db) {
  if (err) throw err;

  const collectionNames = db.getCollectionNames();

  console.log(`Collections in the database: ${collectionNames}`);

  db.close();
});

This will output an array of collection names that exist in the database:

Collections in the database: [ 'collection1', 'collection2', 'collection3' ]

Conclusion

The getCollectionNames command in Javascript is a simple but powerful tool that can help programmers retrieve a list of collection names in a MongoDB database. It is a useful function to have in your toolkit when working with MongoDB databases.