1. Web
  2. Web APIs
  3. SyncEvent
  4. lastChance

SyncEvent: lastChance property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Note: This feature is only available in Service Workers.

The 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.

Value

A boolean value that indicates whether the user agent will not make further synchronization attempts after the current attempt.

Specifications

Specification
Web Background Synchronization
# dom-syncevent-lastchance

Browser compatibility

Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
lastChance
Chrome – Full support
Chrome 49 (Release date: 2016-03-02)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 36 (Release date: 2016-03-15)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 49 (Release date: 2016-03-09)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Full support
Opera Android 36 (Release date: 2016-03-31)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 5 (Release date: 2016-12-15)
footnote Full support
WebView Android – No support
WebView Android
footnote
footnote See bug 40449796
WebView on iOS – No support
WebView on iOS
footnote No support

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Full support
No support
See implementation notes.

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