CloseWatcher: close event
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
A close event is fired at a CloseWatcher object when a close request was received and only fired if the cancel event that preceded the close one was not canceled.
The close event handler is where the code to close the UI component should be called: this ensures that the component will be closed properly either from the platform-specific close signal or from a call to CloseWatcher.requestClose().
Syntax
Use the event name in methods like addEventListener(), or set an event handler property.
js
addEventListener("close", (event) => { })
onclose = (event) => { }
Event type
An Event.
Examples
Using the close event
Use the close to listen for close requests.
js
watcher.addEventListener("close", () => {
// Close your UI component
sidebar.hide();
});
Specifications
| Specification |
|---|
| HTML # handler-closewatcher-onclose |
Browser compatibility
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close 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