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
| Specification | Status | Comment |
|---|---|---|
| Push API The definition of 'expirationTime' in that specification. | Working Draft | Initial definition. |
| Desktop | ||||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
| Basic support | 60 | 16 | ? | No | 47 | No |
| Mobile | |||||||
|---|---|---|---|---|---|---|---|
| Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | No | 60 | ? | ? | 47 | No | No |
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https://developer.mozilla.org/en-US/docs/Web/API/PushSubscription/expirationTime