Is there something to auto update this code in vue?

Question

I got this button in the navigator that shows up when a user is logged in and when the user logs out the button is gone. But now i need to refresh my page before the button remo

Answer 1

You'll want to use an onAuthStateChanged listener instead of the currentUser:

mounted() {
  firebase.auth().onAuthStateChanged((user) => {
    if(user) {
      this.ingelogd = true;
    }
  });
},

The onAuthStateChanged listener gets called each time the sign-in state changes, which ensures your ingelogd always reflects this state.

For more on this, see the first snippet in the Firebase documentation on getting the currently signed in user.