SyncManager.register()

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 SyncManager.register method of the SyncManager interface returns a Promise that resolves to a SyncRegistration instance. 

Syntax
SyncManager.register([options]).then(function(syncRegistration) { /* ... */ })

Returns
 A Promise that resolves to an instance of SyncRegistration. 
Parameters
 options Optional
   An object that sets options for an instance of SyncRegistration. The available options are:    allowOnBattery: A boolean that determines whether synchronization is allowed when the user agent is on a battery-powered device. The default is true.   id: The unique identifier of the specified SyncRegistration object.   idleRequired: A boolean that determines whether synchronization is allowed when the user agent's device is idle. The default is false.   maxDelay: The maximum delay in milliseconds before the next sync event (or the first sync event if it is periodic). The default is 0, meaning there is no maximum delay.   minDelay: The minimum delay in milliseconds before the next sync event (or the first sync event if it is periodic). The default is 0.   minPeriod: The minimum time in milliseconds between periodic sync events. The default is 0, meaning events are not periodic.   minRequiredNetwork: The network condition under which background synchronization will occur. Valid values are 'network-any', 'network-offline', 'network-online', 'network-non-mobile'. The default value is 'network-online'.    
Browser compatibility




Desktop
Mobile



Chrome
Edge
Firefox
Internet Explorer
Opera
Safari
WebView Android
Chrome Android
Firefox for Android
Opera Android
Safari on IOS
Samsung Internet



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Last modified: Feb 18, 2022, by MDN contributors


    
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