Web/API/SyncEvent/tag

This is an experimental technologyCheck the Browser compatibility table carefully before using this in production.

The SyncEvent.tag read-only property of the SyncEvent interface returns the developer-defined identifier for this SyncEvent. This is the value passed in the tag parameter of the SyncEvent() constructor.

Syntax

var tag = SyncEvent.tag

Value

The developer-defined identifier for this SyncEvent.

Specifications

Specification	Status	Comment
Web Background SynchronizationThe definition of 'tag' in that specification.	Living Standard	Initial definition.

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.

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
tag Experimental'Non-standard'	Chrome Full support 49	Edge Full support ≤79	Firefox ?	IE No support No	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.

SyncEvent.tag by Mozilla Contributors is licensed under CC-BY-SA 2.5.