IdleDetector: change event

{{securecontext_header}}{{APIRef("Idle Detection API")}}{{SeeCompatTable}}{{AvailableInWorkers("window_and_dedicated")}}

The change event of the {{domxref("IdleDetector")}} interface fires when the value of userState or screenState has changed.

Syntax

Use the event name in methods like {{domxref("EventTarget.addEventListener", "addEventListener()")}}, or set an event handler property.

addEventListener("change", (event) => { })

onchange = (event) => { }

Event type

A generic {{domxref("Event")}}.

Example

In the following example, the change callback prints the status of userState and screenState to the console.

idleDetector.addEventListener("change", () => {
  const userState = idleDetector.userState;
  const screenState = idleDetector.screenState;
  console.log(`Idle change: ${userState}, ${screenState}.`);
});

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}