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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 PeriodicSyncRegistration interface of the ServiceWorker API provides an object for managing periodic background synchronization.
Properties
PeriodicSyncRegistration.minPeriodRead only- Provides in miliseconds the minimum time between periodic
syncevents. User agents may delay this event for reasons ranging from usage frequency to device states such as, for example, battery charge, connectivity, and location. PeriodicSyncRegistration.networkStateRead only- Indicates the network condition under which periodic background synchronization will occur. Valid values are
'any','avoid-cellular', and'online'. PeriodicSyncRegistration.powerStateRead only- Indicates how the PeriodicSyncRegistration deals with a devices' battery conditions. Valid values are
'auto', and'avoid-draining'. PeriodicSyncRegistration.tagRead only- Provides the unique identifier of the specified
PeriodicSyncRegistration.
Methods
PeriodicSyncRegistration.unregister- Returns a
Promisethat resolves to Boolean indicating whether thePeriodicSyncRegistrationobject was unregistered.
Examples
// TBD
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|
| Basic support | No support | ? | ? | ? | ? |
| Feature | Android | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile | Chrome for Android |
|---|---|---|---|---|---|---|---|
| Basic support | No support | ? | ? | ? | ? | ? | No support |