How can you manage push notifications when a user uses multiple accounts on the same browser? What can you do if multiple users use the same device / browser?
Is it possible to instantly deliver a web push notification to notify a phone call or to deliver any other time-sensitive notification?
How can you associate a push subscription to a specific user? How can you implement log-in and log-out for web push notifications?
How can you collect analytics for web push notifications (e.g. clicks)?
These two methods defined by the Push API are used to get the push subscription from the browser. What is the difference between them?
When a user is visiting your website and subscribes to notifications, you get a push subscription, which must be stored somewhere (in a database) in order to send notifications to that user.
How can you verify that a push subscription is still valid (and not invalid or expired)? How can you detect if a user has unsubscribed and the subscription is no longer valid?
What can you do if you receive that notifications? What does it mean? How can you fix it?
How can you find out if the current browser supports the Push API and Web Push Notifications?
Sometimes you just need to send the same notification to all users that have subscribed to your website notifications. Let’s see how to achieve that.