The NavigationDestination interface of the Navigation API represents the destination being navigated to in the current navigation.
It is accessed via the NavigateEvent.destination property.
id Read onlyReturns the id value of the destination NavigationHistoryEntry if the NavigateEvent.navigationType is traverse, or an empty string otherwise.
index Read onlyReturns the index value of the destination NavigationHistoryEntry if the NavigateEvent.navigationType is traverse, or -1 otherwise.
key Read onlyReturns the key value of the destination NavigationHistoryEntry if the NavigateEvent.navigationType is traverse, or an empty string otherwise.
sameDocument Read onlyReturns true if the navigation is to the same document as the current Document value, or false otherwise.
url Read onlyReturns the URL being navigated to.
getState()Returns a clone of the available state associated with the destination NavigationHistoryEntry, or navigation operation (e.g., navigate()) as appropriate.
navigation.addEventListener("navigate", (event) => {
// Exit early if this navigation shouldn't be intercepted,
// e.g. if the navigation is cross-origin, or a download request
if (shouldNotIntercept(event)) {
return;
}
// Returns a URL() object constructed from the
// NavigationDestination.url value
const url = new URL(event.destination.url);
if (url.pathname.startsWith("/articles/")) {
event.intercept({
async handler() {
// The URL has already changed, so show a placeholder while
// fetching the new content, such as a spinner or loading page
renderArticlePagePlaceholder();
// Fetch the new content and display when ready
const articleContent = await getArticleContent(url.pathname);
renderArticlePage(articleContent);
},
});
}
});