FetchEvent: clientId property
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2018.
Note: This feature is only available in Service Workers.
The clientId
read-only property of the
FetchEvent
interface returns the id of the Client
that the
current service worker is controlling.
The Clients.get()
method could then be passed this ID to retrieve the
associated client.
Value
A string that represents the client ID.
Examples
js
self.addEventListener("fetch", (event) => {
console.log(event.clientId);
});
Specifications
Specification |
---|
Service Workers # fetch-event-clientid |
Browser compatibility
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
clientId |
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- No support
- No support
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.