How does Facebook send notifications without tab
Question
- Go to facebook and allow HTML5 Desktop Notification for it.
- Close facebook tab.
- Ask somebody to write you message on facebook.
Now u see the notification from facebook while facebook site isn't open. HOW?
2 answers
solution1
5 ACCPTED 2016-01-26 13:36:13
Facebook uses the Push Notifications API: https://www.w3.org/TR/push-api/
More information:
solution2
0 2020-06-17 14:26:36
They use the Push API - https://developer.mozilla.org/en-US/docs/Web/API/Push_API Quoting from there:
The Push API gives web applications the ability to receive messages pushed to them from a server, whether or not the web app is in the
foreground, or even currently loaded, on a user agent.
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