This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The SyncEvent.lastChance read-only property of the SyncEvent interface returns true if the user agent will not make further synchronization attempts after the current attempt. This is the value passed in the lastChance parameter of the SyncEvent() constructor.
var lastChance = SyncEvent.lastChance
A Boolean that indicates whether the user agent will not make further synchronization attempts after the current attempt.
| Specification | Status | Comment |
|---|---|---|
| Web Background Synchronization The definition of 'lastChance' in that specification. | Living Standard | Initial definition. |
| Desktop | ||||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
| Basic support | 49 | ? | ? | ? | ? | ? |
| Mobile | |||||||
|---|---|---|---|---|---|---|---|
| Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | No | 49 | ? | ? | ? | ? | 5.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/SyncEvent/lastChance