HashChangeEvent

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

The HashChangeEvent interface represents events that fire when the fragment identifier of the URL has changed.

The fragment identifier is the part of the URL that follows (and includes) the # symbol.

Event HashChangeEvent

Constructor

HashChangeEvent()

Creates a new HashChangeEvent object.

Instance properties

This interface also inherits the properties of its parent, Event.

HashChangeEvent.newURL Read only

The new URL to which the window is navigating.

HashChangeEvent.oldURL Read only

The previous URL from which the window was navigated.

Instance methods

This interface has no methods of its own, but inherits the methods of its parent, Event.

Examples

Basic example

js
function locationHashChanged() {
  if (location.hash === "#some-cool-feature") {
    someCoolFeature();
  }
}
window.addEventListener("hashchange", locationHashChanged);

Specifications

Specification
HTML
# the-hashchangeevent-interface

Browser compatibility