I'm using the firebase real-time database version 9, and I use this method to retrieve back data:
const refList= ref(
db,
`users/${uid}`
);
onValue(refList, (snapshot) => {
let allData = snapshot.val() === null ? [] : snapshot.val()
});
So this is real-time communication therefore this ref has to use a listener. I checked their documentation, they say to use the off() method onto the ref without any code examples.
refList.off()
Will this remove the listener?
The onValue call now returns a function that (when called) removes the listener. So:
const unsubscribe = onValue(refList, (snapshot) => {
let allData = snapshot.val() === null ? [] : snapshot.val()
});
And then later:
unsubscribe();