IdleDetector: start() method
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Note: This feature is available in Dedicated Web 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
optionsOptional-
An object with the following properties:
threshold-
The minimum number of idle milliseconds before reporting should begin.
signal-
A reference to an
AbortSignalinstance allowing you to abort idle detection.
Return value
A Promise.
Exceptions
NotAllowedErrorDOMException-
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
| Specification |
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| Idle Detection API # api-idledetector-start |
Browser compatibility
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Legend
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- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.
- Has more compatibility info.