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, oor null otherwise.
var expirationTime = pushSubscription.expirationTime
| Specification | Status | Comment |
|---|---|---|
| Push API The definition of 'expirationTime' in that specification. | Working Draft | Initial definition. |
| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|---|
| Basic support | 60 | (Yes) | ? | ? | 47 | ? |
| Feature | Android Webview | Chrome for Android | Edge | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|---|---|
| Basic support | 60 | 60 | (Yes) | ? | ? | ? | 47 | ? |
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https://developer.mozilla.org/en-US/docs/Web/API/PushSubscription/expirationTime