IdleDetector: start() method

Secure contextLimited availabilityAvailable in workers

The start() method of the IdleDetector interface returns a Promise that resolves when the detector starts listening for changes in the user’s idle state. This method takes an optional options object with the threshold in milliseconds where inactivity should be reported and signal for an AbortSignal to abort the idle detector.

Syntax

start()
start(options)

Parameters

• options Optional
  • : An object with the following properties:
    • threshold
      • : The minimum number of idle milliseconds before reporting should begin.
    • signal
      • : A reference to an AbortSignal instance allowing you to abort idle detection.

Return value

A Promise.

Exceptions

• NotAllowedError DOMException
  • : Use of this feature was blocked by a Permissions Policy.

Examples

The following example shows how to start idle detection using the options argument. It retrieves an instance of AbortSignal from an instance of AbortController.

const controller = new AbortController();
const signal = controller.signal;

await idleDetector.start({
  threshold: 60_000,
  signal,
});
console.log("IdleDetector is active.");

Specifications

Browser compatibility