javascript - Firestore unsubscribe to updates

Question

I am following this Google Cloud Firestore example on YouTube and getting real time updates successfully. However, I don't know how to unsubscribe to updates because it's not explained in the video. I read the documentation to create an unsubscribe() function but it doesn't work for me.

getRealtimeUpdates = function(document) {
firestore.collection("collection_name")
.onSnapshot(function(querySnapshot) {
querySnapshot.forEach(function(doc) {
if (doc && doc.exists) {
const myData = doc.data();
// DO SOMETHING
}
});
});
}

Answer 1

Waitting for answers