NavigationHistoryEntry: dispose event
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
The dispose event of the NavigationHistoryEntry interface is fired when the entry is no longer part of the history entry list.
Disposal occurs when:
- Forward history entries are cleared. See the example at Notifications on entry disposal for more information.
- The user clears their browser history using settings or provided UI controls.
- The history limit is exceeded. This is not specified anywhere, but browsers tend to have a history limit of 50 pages.
Syntax
Use the event name in methods like addEventListener(), or set an event handler property.
js
addEventListener("dispose", (event) => { })
ondispose = (event) => { }
Event type
A generic Event.
Examples
js
navigation.addEventListener("currententrychange", () => {
navigation.currentEntry.addEventListener("dispose", disposeHandler);
});
Specifications
| Specification |
|---|
| HTML # handler-navigationhistoryentry-ondispose |