web api instance property
FetchEvent: replacesClientId property
Available in 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
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.