FetchEvent: replacesClientId property
Note: This feature is only available in Service Workers.
The replacesClientId
read-only property of the
FetchEvent
interface is the id
of the
client
that is being replaced during a page navigation.
For example, when navigating from page A to page B replacesClientId
is the
ID of the client associated with page A. It can be an empty string when navigating from
about:blank
to another page, as about:blank
's client will be
reused, rather than be replaced.
Additionally, if the fetch isn't a navigation, replacesClientId
will be an
empty string. This could be used to access/communicate with a client that will
imminently be replaced, right before a navigation.
Value
A string.
Examples
self.addEventListener("fetch", (event) => {
console.log(event.replacesClientId);
});
Specifications
No specification found
No specification data found for api.FetchEvent.replacesClientId
.
Check for problems with this page or contribute a missing spec_url
to mdn/browser-compat-data. Also make sure the specification is included in w3c/browser-specs.
Browser compatibility
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