NavigationHistoryEntry

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The NavigationHistoryEntry interface of the Navigation API represents a single navigation history entry.

These objects are commonly accessed via the Navigation.currentEntry property and Navigation.entries() method.

The Navigation API only exposes history entries created in the current browsing context that have the same origin as the current page (e.g. not navigations inside embedded <iframe>s, or cross-origin navigations), providing an accurate list of all previous history entries just for your app. This makes traversing the history a much less fragile proposition than with the older History API.

EventTarget NavigationHistoryEntry

Instance properties

Inherits properties from its parent, EventTarget.

id Read only Experimental

Returns the id of the history entry. This is a unique, UA-generated value that always represents a specific history entry, useful to correlate it with an external resource such as a storage cache.

index Read only Experimental

Returns the index of the history entry in the history entries list (that is, the list returned by Navigation.entries()), or -1 if the entry does not appear in the list.

key Read only Experimental

Returns the key of the history entry. This is a unique, UA-generated value that represents the history entry's slot in the entries list rather than the entry itself. It is used to navigate that particular slot via Navigation.traverseTo(). The key will be reused by other entries that replace the entry in the list (that is, if the NavigateEvent.navigationType is replace).

sameDocument Read only Experimental

Returns true if this history entry is for the same document as the current Document value, or false otherwise.

url Read only Experimental

Returns the absolute URL of this history entry.

Instance methods

Inherits methods from its parent, EventTarget.

getState() Experimental

Returns a clone of the available state associated with this history entry.

Events

dispose Experimental

Fires when the entry is no longer part of the history entry list.

Examples

function initHomeBtn() {
  // Get the key of the first loaded entry
  // so the user can always go back to this view.
  const {key} = navigation.currentEntry;
  backToHomeButton.onclick = () => {
    navigation.traverseTo(key);
  }
}
// Intercept navigate events, such as link clicks, and
// replace them with single-page navigations
navigation.addEventListener("navigate", event => {
  event.intercept({
      async handler() {
        // Navigate to a different view,
        // but the "home" button will always work.
      }
  });
});

Specifications

Specification
Navigation API
# navigationhistoryentry

Browser compatibility

BCD tables only load in the browser

See also