How to increment a record in Firebase?

Question

I have a Firebase record \"searches: 0\" for each user. On some event, I\'d like to add 1 to what the current count is. I\'ve gotten this far, but for some reason, it\'s not

Answer 1

There's a new method ServerValue.increment()in firebase JavaScript SDK v7.14.0

It's better for performance and cheaper since no round trip is required.

See here

Added ServerValue.increment() to support atomic field value increments without transactions.

API Docs here

Usage example:

firebase.database()
    .ref('users')
    .child(user_uid)
    .child('searches')
    .set(firebase.database.ServerValue.increment(1))

Or you can decrement, just put -1 as function arg like so:

firebase.database()
    .ref('users')
    .child(user_uid)
    .child('searches')
    .set(firebase.database.ServerValue.increment(-1))