read only certain fields in firebase

Question

If I have a database like

users: {
  user1: { 
    name:\'qwert\', 
    id: 123,
    num: 9999 
  },
  user2: { 
    name:\'zxcvb\', 
    id: 456,
    num:          


        

Answer 1

To retrieve only the names of the users, then try the following:

firebase.database().ref().child("users").on("value", function (snapshot) {
  snapshot.forEach(function(childSnapshot) {
   var name=childSnapshot.val().name;
  });
});

Here the snapshot is users, then you iterate inside user1 and user2 to be able to access the names of these users and retrieve them.