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
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