This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The expirationTime read-only property of the PushSubscription interface returns a DOMHighResTimeStamp of the subscription expiration time associated with the push subscription, if there is one, or null otherwise.


var expirationTime = pushSubscription.expirationTime


A DOMHighResTimeStamp.


Specification Status Comment
Push API
The definition of 'expirationTime' in that specification.
Working Draft Initial definition.

Browser Compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Basic support
Chrome Full support 60Edge Full support 16Firefox ? IE No support NoOpera Full support 47Safari No support NoWebView Android No support NoChrome Android Full support 60Edge Mobile ? Firefox Android ? Opera Android Full support 47Safari iOS No support NoSamsung Internet Android No support No


Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.

Document Tags and Contributors

Contributors to this page: strattadb, fscholz, libbymc, jpmedley
Last updated by: strattadb,