This code is working fine.  The only improvement I want is - when I pass "Pi", it fetch all the items object that begin with the name "Pi", but when I enter "pi" it returns nothing!  This means I want this method startAt(ite...

I am pushing data in firebase, but i want to store unique id in my database also . can somebody tell me,how to push the data with unique id.  i am trying like this    writeUserData() {     var key= ref.push().key();     var newData={         id: ke...

I have the following structure on my Firebase database:   I would like to search for an user by name, last name or email but as I don't have the user key in the level above I don't know how I can achieve this. I'm doing and administrato...

I was wondering, is there a way to update the key value?  Let´s use the following data:    I am using set() to write the data.  Now, I want the user to edit their bookTitle and it needs to change on both places. I tried using update() but I can´t...

I'm trying out Firebase (since Google's new release).  In the original version of Firebase the parameter shallow=true would return an object with { key: true } for every key at the root of the tree/branch that was requested (and so, rather...

Is there a method in firebase, which can check if value exist in DB? Firebase has method .exists(), but according to docs it checks only the keys.  I have the following structure:  {   "users": {     "-KKUmYgLYREWCnWeHCvO": {...

I have a Firebase HTTPs function. The function needs to read a value from a Firebase database based on the query parameter, and return a result based on this data.  The Firebase JS SDK says to do this using:  return firebase.database().ref('/us...

As the title says, I can't get the differences between update and set. Also the docs can't help me, as the update example works exactly the same if I use set instead.  The update example from the docs:  function writeNewPost(uid, username, ti...

I read somewhere a claim that Firebase caches the data.  So I ran this test that reads a semi large volume of data (about 400KB).  Here is the relevant code.  firebase.initializeApp(config);  var counter = 0;  console.time('firebase answered in&#...

I am seeing a tad difference between child_added and value when returning data in firebase. Using value I can test to see if snapshot.val() has returned something or not using it like this:  Fetching Data:  ref.orderByChild('appUserName')...