coderef

Idle detectionLimited availability

The IdleDetector API is used to notify a webpage of the user's idle, active, and locked state.

Not yet supported in all major browsers — check the table and provide a fallback.

How to use ↓Compare browsers

Browser support

DesktopChrome
1–93Not supported
94+Supportedsince Sep 21, 2021
Current: 155
Edge
12–113Not supported
114+Supportedsince Jun 2, 2023
Current: 154
Firefox
✕Not supportedup to 157
Current: 157
Safari
✕Not supportedup to 27
Current: 27
MobileChrome Android
18–93Not supported
94+Supportedsince Sep 21, 2021
Current: 155
Firefox Android
✕Not supportedup to 157
Current: 157
Safari iOS
✕Not supportedup to 27
Current: 27

How to use

Not supported in Firefox, Safari, Firefox Android, Safari iOS. Use feature detection below and provide a fallback (or a polyfill) for those browsers.

Example

Full syntax and examples are on MDN: IdleDetector.

Feature detection

JS · check before using
if ("allow" in document.createElement("iframe")) {
  // the allow attribute/property of <iframe> is supported
}

Documentation (MDN)

Specification

Sub-features

Support for each part of the feature (9). The overall table above shows when the whole feature works.

Sub-featureChromeEdgeFirefoxSafariChrome AndroidFirefox AndroidSafari iOS
IdleDetector94114✕✕94✕✕
IdleDetector.IdleDetector94114✕✕94✕✕
IdleDetector.change_event94114✕✕94✕✕
IdleDetector.requestPermission_static94114✕✕94✕✕
IdleDetector.screenState94114✕✕94✕✕
IdleDetector.start94114✕✕94✕✕
IdleDetector.userState94114✕✕94✕✕
iframe.allow.idle-detection9494✕✕94✕✕
http.headers.Permissions-Policy.idle-detection9494✕✕94✕✕