ServiceWorkerRegistration.sync

Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

The sync property of the ServiceWorkerRegistration interface returns a reference to the SyncManager interface, which manages background synchronization processes.

Syntax

mySyncManager = ServiceWorker.sync

Value

A SyncManager object.

Specifications

Specification	Status	Comment
Web Background Synchronization	Living Standard	Initial definition.

Browser compatibility

• Desktop
• Mobile

Feature	Chrome	Firefox (Gecko)	Internet Explorer	Opera	Safari (WebKit)
Basic support	49.0	?[1]	?	?	?

Feature	Android	Android Webview	Firefox Mobile (Gecko)	Firefox OS	IE Mobile	Opera Mobile	Safari Mobile	Chrome for Android
Basic support	No support	No support	?	?	?	?	?	49.0

[1] Service workers (and Push) have been disabled in the Firefox 45 Extended Support Release (ESR.)