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Important: As of Firefox 52, the methods defined in this mixin have been moved to the WindowOrWorkerGlobalScope mixin, and other browsers will follow suit. Look to that page for up-to-date details.

WindowTimers is a mixin used to provide utility methods which set and clear timers. No objects of this type exist; instead, its methods are available on Window for the standard browsing scope, or on WorkerGlobalScope for workers.


This interface neither inherits nor provides any properties.


This interface does not inherit any methods. It offers the following methods.

Cancels the repeated execution set using WindowTimers.setInterval().
Cancels the delayed execution set using WindowTimers.setTimeout().
Schedules a function to execute every time a given number of milliseconds elapses.
Schedules a function to execute in a given amount of time.


Specification Status Comment
HTML Living Standard
The definition of 'WindowTimers' in that specification.
Living Standard No change since the latest snapshot, HTML 5.1.
HTML 5.1
The definition of 'WindowTimers' in that specification.
Recommendation Snapshot of HTML Living Standard. No change.
The definition of 'WindowTimers' in that specification.
Recommendation Snapshot of HTML Living Standard. Creation of WindowBase64 (properties where on the target before it).

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Firefox (Gecko) Chrome Edge Internet Explorer Opera Safari
Basic support 1.0 (1.7 or earlier) 1.0 (Yes) 4.0 4.0 1.0
Feature Firefox Mobile (Gecko) Android Edge IE Mobile Opera Mobile Safari Mobile
Basic support 1.0 (1) (Yes) (Yes) (Yes) (Yes) (Yes)


See also

Document Tags and Contributors

 Last updated by: erikadoyle,