The resultingClientId read-only property of the FetchEvent interface is the id of the client that replaces the previous client during a page navigation.
For example, when navigating from page A to page B resultingClientId is the ID of the client associated with page B.
If the fetch request is a subresource request or the request's destination is report, resultingClientId will be an empty string.
A string.
js
self.addEventListener("fetch", (event) => { console.log(event.resultingClientId); });
| Specification |
|---|
| Service Workers # fetch-event-resultingclientid |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
resultingClientId |
72 | 79 | 65 | No | 60 | 16 | 72 | 72 | 65 | 50 | 16 | 11.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/FetchEvent/resultingClientId