in this chapter, we will show you how to handle the firebase connection state.

check connection

we can check for connection value using the following code.

index.js

var connectedref = firebase.database().ref(".info/connected");

connectedref.on("value", function(snap) {
   if (snap.val() === true) {
      alert("connected");
   } else {
      alert("not connected");
   }
});

when we run the app, the pop up will inform us about the connection.

by using the above given function, you can keep a track of the connection state and update your app accordingly.