number of documents in collection mongodb code example

Example 1: see number of documents in mongodb collection

db.collection.count()

Example 2: mongo count

db.collection.countDocuments( <query>, <options> )

Example 3: order documents in firestore

// Create Data
const timestamp = firebase.firestore.FieldValue.serverTimestamp;

db.collection('things').add({ ...myData, createdAt: timestamp() })


// Query
db.collection('things').orderBy('createdAt').startAfter(today)