Firebase - Write Data

In this chapter we will show you how to save your data to Firebase.

Set

The set method will write or replace data on specified path. Let's create reference to players collection and set two players.

var playersRef = firebase.database().ref("players/");

playersRef.set({
   John: {
      number: 1,
      age: 30
   },
 
   Amanda: {
      number: 2,
      age: 20
   }
});

We will see the following result.

Update

We can update Firebase data in similar fashion. Notice how we are using players/john path.

var johnRef = firebase.database().ref("players/John");

johnRef.update({
   "number": 10
});

When we refresh our app, we can see that the Firebase data is updating.