Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
The SyncEvent() constructor creates a new SyncEvent object.
Syntax
var mySyncEvent = new SyncEvent(type, init)
Parameters
- type
- The type of the Event.
- init Optional
- An options object containing any custom settings that you want to apply to the event object. Options are as follows:
tag: A developer-defined unique identifier for thisSyncEvent.lastChance: ABooleanindicating that the user agent will not make further synchronization attempts after the current attempt.
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SyncEvent() constructor | Chrome Full support 49 | Edge Full support ≤79 | Firefox ? | IE ? | Opera ? | Safari ? | WebView Android No support No | Chrome Android Full support 49 | Firefox Android ? | Opera Android ? | Safari iOS ? | Samsung Internet Android Full support 5.0 |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.
- Non-standard. Expect poor cross-browser support.
- Non-standard. Expect poor cross-browser support.