firebase update data
await firebase.database().ref().update(updates);firebase update data
await firebase.database().ref().update(updates);document.set() firebasefirestore java
var washingtonRef = db.collection("cities").doc("DC");
// Atomically add a new region to the "regions" array field.
washingtonRef.update({
regions: firebase.firestore.FieldValue.arrayUnion("greater_virginia")
});
// Atomically remove a region from the "regions" array field.
washingtonRef.update({
regions: firebase.firestore.FieldValue.arrayRemove("east_coast")
});Copyright © 2021 Codeinu
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