How can I get all mongoDB collection names using Node.js code?

Question

I want to store all collection names of MongoDB in a variable/array. How can I write nodeJS code to do that?

Answer 1

1. create a connection by providing connection url.
2. create a client to db using database name client.db(dbName);
3. call listCollections method to get detail info of each collection.

4. finally filter and push the required information and close the connection.

    const mongo = require('mongodb').MongoClient; mongo.connect(connectionUrl, function(err, client) { let allCollections = []; //create client by providing database name const db = client.db(dbName); db.listCollections().toArray(function(err, collections) { if(err) console.log(err); //iterate to each collection detail and push just name in array collections.forEach(eachCollectionDetails => { allCollections.push(eachCollectionDetails.name); }); //close client client.close(); }); }); 

Answer 2

await db.listCollections().toArray().map(c => c.name);

这将返回一个包含每个集合名称的字符串数组。