This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
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
|Web Alarms API||Working Draft||Defines the extention for the
|Feature||Chrome||Firefox (Gecko)||Internet Explorer||Opera||Safari (WebKit)|
|Basic support||Not supported||Not supported||Not supported||Not supported||Not supported|
|Feature||Android||Firefox OS||Firefox Mobile (Gecko)||IE Mobile||Opera Mobile||Safari Mobile|
|Basic support||Not supported||1.0||Not supported||Not supported||Not supported||Not supported|
Gecko implementation note
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 unprefixed the API yet.