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.
Update compatibility data on GitHub
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
tag | 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.