How to subscribe to a FCM topic from a web client?

Question

I want to subscribe to a FCM (Firebase Cloud Messaging) topic from the front end (web) of an Angular application.

From what I've learned from here and here, it looks like subscription to topics can't be done via web from the front end. The client should send a token and a topic to the server, then the server should request the subscription to FCM.

I'd like to know if there's a way I can securely subscribe to topics directly via web.

Answer 1

yes it can be done client side

this.push.subscribe(
  'your Topic',
  () => {
    console.log('success');
  },
  e => {
    console.log('error:', e);
  }
);

more information

https://github.com/phonegap/phonegap-plugin-push/blob/master/docs/API.md

https://ionicframework.com/docs/native/push

this is related your topic

https://forum.ionicframework.com/t/firebase-push-notification-topic-subscription/95523/6