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.
FetchEvent: clientId property
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
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
clientId |
49 | 17 | 45 | No | 36 | 11.1 | 49 | 49 | 45 | 36 | 11.3 | 5.0 |
See also
© 2005–2023 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/FetchEvent/clientId