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 AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
expirationTimeChrome Full support 60Edge Full support 16Firefox No support NoIE No support NoOpera Full support 47Safari No support NoWebView Android No support NoChrome Android Full support 60Firefox Android No support NoOpera Android Full support 44Safari iOS No support NoSamsung Internet Android Full support 8.0


Full support  
Full support
No support  
No support