ServiceWorkerGlobalScope: contentdelete event
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Note: This feature is only available in Service Workers.
The contentdelete event of the ServiceWorkerGlobalScope interface is fired when an item is removed from the indexed content via the user agent.
This event is not cancelable and does not bubble.
Syntax
Use the event name in methods like addEventListener(), or set an event handler property.
addEventListener("contentdelete", (event) => { })
oncontentdelete = (event) => { }
Event type
A ContentIndexEvent. Inherits from Event.
Event properties
In addition to the properties listed below, this interface inherits the properties of its parent interface, Event.
idRead only-
A string which identifies the deleted content index via it's
id.
Examples
The following example uses a contentdelete event handler to remove cached content related to the deleted index item.
self.addEventListener("contentdelete", (event) => {
const deletion = caches
.open("cache-name")
.then((cache) =>
Promise.all([
cache.delete(`/icon/${event.id}`),
cache.delete(`/content/${event.id}`),
]),
);
event.waitUntil(deletion);
});
You can also set up the event handler using the oncontentdelete property:
self.oncontentdelete = (event) => {
// …
};
Specifications
| Specification |
|---|
| Content Index # dom-serviceworkerglobalscope-oncontentdelete |
Browser compatibility
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contentdelete event
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Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.