Information about a single alarm. This object is returned from alarms.get() and alarms.getAll(), and is passed into the alarms.onAlarm listener.

Type

Values of this type are objects. They contain the following properties:

name
string. Name of this alarm. This is the name that was passed into the alarms.create() call that created this alarm.
scheduledTime
double. Time at which the alarm is scheduled to fire next, in milliseconds since the epoch.
periodInMinutesOptional
double. If this is not null, then the alarm is periodic, and this represents its period in minutes.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxOperaFirefox for Android
Basic supportChrome Full support YesEdge No support NoFirefox Full support 45Opera Full support YesFirefox Android Full support 48

Legend

Full support  
Full support
No support  
No support

Acknowledgements

This API is based on Chromium's chrome.alarms API.

Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.

Document Tags and Contributors

Contributors to this page: fscholz, wbamberg, bsilverberg, hashedhyphen
Last updated by: fscholz,