Firestore decrement

Firestore decrement field

const userRef = db.collection('documents').doc('document_id');
const decrement = firebase.firestore.FieldValue.increment(-1);

userRef.update({ fieldToDecrease: decrement });

Source: grepper.com

Similar codes

1 vote225 views1 answer
Check if file.properties is exits android
TypeScript
6 votes196 views4 answers
Angular get url params
TypeScript
14 votes211 views2 answers
How to remove elements from object in typescript
TypeScript
1 vote243 views3 answers
Where do you get your test data
TypeScript
1 vote226 views1 answer
React router dom private route typescript
TypeScript
1 vote210 views2 answers
Property 'style' does not exist on type 'Element'
TypeScript
0 vote253 views1 answer
Number square n times in typescript
TypeScript
0 vote194 views1 answer
Get elements by id like jquery
TypeScript
0 vote200 views1 answer
UpdateTable operation with the GlobalSecondaryIndexUpdates parameter
TypeScript
14 votes193 views3 answers
Arrow function in typescript
TypeScript