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

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 49.0 (Yes)[2] ?[1] ? ? ?
Feature Android Android Webview Edge Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support No support (Yes) ? ? ? ? ? 49.0

[1] Service workers (and Push) have been disabled in the Firefox 45 and 52 Extended Support Releases (ESR.)

[2] Service workers is available in Microsoft Edge starting EdgeHTML 16 behind a flag.

Document Tags and Contributors

 Contributors to this page: abbycar, chrisdavidmills, jpmedley, AlexPl
 Last updated by: abbycar,