W3cubDocs

IdleDetector: change event

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

The change event of the IdleDetector interface fires when the value of userState or screenState has changed.

Syntax

Use the event name in methods like addEventListener(), or set an event handler property.

addEventListener('change', event => { });

onchange = event => { };

Event type

A generic 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

Specification
Idle Detection API # api-idledetector-onchange

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`change_event`	94	94	No	No	80	No	94	94	No	66	No	17.0

© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/IdleDetector/change_event