Please explain the "simple demo" for sync fully

[sureshvv]

https://jakearchibald.github.io/isserviceworkerready/demos/sync/

Looks like black magic

Where is the showNotification call?

Please point me to any other documentation on this.

[karolklp]

showNotification is in service worker - https://jakearchibald.github.io/isserviceworkerready/demos/sync/sw.js

You can find both detailed explanation and spec here - https://github.com/WICG/BackgroundSync

[sureshvv]

Aaah.. makes sense now. Thank you.