JavaScript General

I need to send only special Users an Email. That is not a big amount. The Website must send 6 E-Ma… Read more Sending Email To Users Without A Risk

Is there a way to do this ? Or with oderByValue ? Any other mean ? fb.orderByChild('upvotes… Read more Can I Orderbychildren Or Orderbyvalue Substracting 1 Child To Another? (or Any Other Mean To Use A Computed Var)

Hi i am trying to get the data from my database, in componentDidMount(), it works fine with this : … Read more (reactassign Firebase Snapshot To A Variable Outside Of The Function

Simple cloud function to get database data is not working. getusermessage() is not working Error: … Read more Cloud Functions For Firebase Timeout

I'm having some trouble figuring out token refreshes when using apollo-client and firebase'… Read more Refreshing A Token With Apollo-client + Firebase Auth

I'm pretty new to Firebase Cloud Messaging, and I haven't been able to get a satisfactory a… Read more When Device Token Expires, Is It Automatically Removed From Fcm Device Group?

I'm building out a quick API for an IOT type app. The structure is that I have a sensor documen… Read more Firestore: How To Add A Document To A Subcollection After Updating Parent

I know Firebase provides data in realtime but I am not being able to update my view with new data w… Read more How To Update Viewpage With New Data Automatically From Firebase?

I am trying to search with specific value with of userkey in firebase database but i am getting bel… Read more Search Elements Object With Specific Key Value In Firebase Database

I have made some tests with firebase and saw difference in rules validation between onDisconnect().… Read more Why Validation Rules Behave Differently (only) With Ondisconnect Update?

Pushing Data Like This: myDataRef.push({name : name, text: text}); I don't want every Push to … Read more Firebase Help : Avoid New Id On New Push

I am currently trying to send a PushNotification to a Device Group using FCM with the help of Fireb… Read more Firebase Fcm Error: 'invalidregistration'

I'm using firebase for authentication purposes but i'm having some troubles setting it up I… Read more How To Fix: Cannot Read Property 'googleauthprovider' Of Undefined

I built a image detection mobile app (e.g. Plastic Bottle, Aluminum Can, Milk Jug, etc.) with React… Read more Google Vision Api Is Not Working After Upload Image To Firebase

I'm looking for how to check if a documents exists in my cloud functions My functions belows wo… Read more Firebase Cloud Functions Check Db For Non-existant Data

I want to return data to function that calls a function with firebase code, because of the asynchro… Read more How Do I Make A Function Return Data That Was Set Within Function (child Snapshot) In Firebase

I am creating a blog using React and Firebase. I have a component called Blogger that creates blog … Read more Rendering A List In React

My scenario is a chat app with the following setup in Firestore channels (collection) id (doc) … Read more Problem Detaching Listener From Firestore Nested / Sub-collection

I am trying to write security rules on my Firestore database to allow read of documents within a co… Read more Firebase Firestore Securitty Rule Based On Attribute Value

I have an object like: var _json = { 'objects':[{ 'type':'path', 'o… Read more Firebase Won't Save Keys With Null Values