Is there a method to iterate through all documents in a collection in firestore

Question

I\'m using the firestore of firebase and I want to iterate through the whole collection. Is there something like:

db.collection(\'something\').forEach((doc) =>         


        

Answer 1

db.collection("cities").get().then(function(querySnapshot) {
    querySnapshot.forEach(function(doc) {
        // doc.data() is never undefined for query doc snapshots
        console.log(doc.id, " => ", doc.data());
    });
});