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The updateCurrentEntry() method of the Navigation interface updates the state of the currentEntry; used in cases where the state change will be independent of a navigation or reload.
updateCurrentEntry(options)
options
An options object containing the following properties:
state
Developer-defined information to be stored in the associated NavigationHistoryEntry once the navigation is complete, retrievable via getState(). This can be any data type. You might, for example, wish to store a page visit count for analytics purposes, or store UI state details so the view can be shown exactly as the user last left it. Any data stored in state must be structured-cloneable.
None (undefined).
DataCloneError DOMException
Thrown if the state parameter had values included in it that are not structured-cloneable.
InvalidStateError DOMException
Thrown if the Navigation.currentEntry is null, i.e., there is no current history entry. This could occur for example if the current page is about:blank.
You could use something like the following to update the open/closed state of a <details> element so that the state can be restored when reloading the page or navigating back from somewhere else.
detailsElem.addEventListener("toggle", () => {
navigation.updateCurrentEntry({ state: { detailOpen: detailsElem.open } });
});
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