javascript - How to increment values in Firebase Realtime Database (v9) - Stack Overflow

admin管理员组

文章数量:1415120

I note that there's instructions on how to increment values for realtime database in Javascript v8:

===

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

API Docs here

Usage example:

firebase.database()
    .ref('node')
    .child('clicks')
    .set(firebase.database.ServerValue.increment(1))

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

firebase.database()
    .ref('node')
    .child('clicks')
    .set(firebase.database.ServerValue.increment(-1))

However, I notice that there isn't any reference to ServerValue in the v9 documentation.

Does this mean that this functionality is not available?

I've tried converting it to v9 on my own but I've been unsuccessful so far:

const setWeekComplete = () => {
    set(ref(database, `users/${user}/streakCounter`), {
        weeks: database.ServerValue.increment(1)
    });
  }    

I note that there's instructions on how to increment values for realtime database in Javascript v8:

===

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

API Docs here

Usage example:

firebase.database()
    .ref('node')
    .child('clicks')
    .set(firebase.database.ServerValue.increment(1))

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

firebase.database()
    .ref('node')
    .child('clicks')
    .set(firebase.database.ServerValue.increment(-1))

However, I notice that there isn't any reference to ServerValue in the v9 documentation.

Does this mean that this functionality is not available?

I've tried converting it to v9 on my own but I've been unsuccessful so far:

const setWeekComplete = () => {
    set(ref(database, `users/${user}/streakCounter`), {
        weeks: database.ServerValue.increment(1)
    });
  }    

• javascript
• firebase
• firebase-realtime-database

Share Improve this question Follow edited Nov 20, 2021 at 11:10 Renaud Tarnec 83.2k1010 gold badges9898 silver badges129129 bronze badges Recognized by Google Cloud Collective asked Nov 20, 2021 at 10:40 Lloyd RajooLloyd Rajoo 14744 silver badges1414 bronze badges 0

Add a ment  | 

1 Answer 1

Sorted by: Reset to default 8

It is still available in V9 and you'll find it here in the doc. So the following should do the trick.

import { ... , increment } from 'firebase/database';

// ...

const setWeekComplete = async () => {
    await set(ref(database, `users/${user}/streakCounter`), {
        weeks: increment(1)
    });
  } 

本文标签： javascriptHow to increment values in Firebase Realtime Database (v9)Stack Overflow