This is an experimental technology
Check 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 Synchronization The 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.
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | 49 | ? | ? | ? | ? | ? |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | Opera Android | iOS Safari | Samsung Internet |
|---|---|---|---|---|---|---|---|
| Basic support | No | 49 | ? | ? | ? | ? | 5.0 |