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

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support49

161

17

442 No36 No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support4949 ?4436 No4.0

1. From version 16: this feature is behind the Enable service workers preference.

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

Document Tags and Contributors

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