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Obsolete since Gecko 51 (Firefox 51 / Thunderbird 51 / SeaMonkey 2.48)
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

This API is available on Firefox or Firefox OS for installed or higher privileged applications.

Returns a MozAlarmsManager object you can use to schedule notifications or applications to be started at a specific time.


var alarms = window.navigator.mozAlarms;


navigator.mozAlarms is a MozAlarmsManager object.


Specification Status Comment
Web Alarms API Working Draft Defines the extention for the navigator object.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support No support No support No support No support No support
Feature Android Firefox OS Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support No support 1.0[1] No support No support No support No support

[1] This API is currently available on Firefox OS only for any installed applications. The current specification for this API is not considered stable enough to unprefix the API yet.

See also

Document Tags and Contributors

 Last updated by: chrisdavidmills,