1. Web
  2. Web APIs
  3. ServiceWorkerRegistration
  4. sync

ServiceWorkerRegistration: sync property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

Note: This feature is available in Web Workers.

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

Value

A SyncManager object.

Specifications

Specification
Web Background Synchronization
# dom-serviceworkerregistration-sync

Browser compatibility

Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
sync
Chrome – Full support
Chrome 49 (Release date: 2016-03-02)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 36 (Release date: 2016-03-15)
footnote Full support
Safari – No support
Safari
footnote
footnote See bug 182565
Chrome Android – Full support
Chrome Android 49 (Release date: 2016-03-09)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Full support
Opera Android 36 (Release date: 2016-03-31)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote
footnote See bug 182565
Samsung Internet – Full support
Samsung Internet 4 (Release date: 2016-03-11)
footnote Full support
WebView Android – No support
WebView Android
footnote
footnote See bug 40449796
WebView on iOS – No support
WebView on iOS
footnote
footnote See bug 182565

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Full support
No support
See implementation notes.

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