This article needs a technical review. How you can help.
This API is available on Firefox OS for internal applications only.
Summary
The onussdreceived property specifies an event listener to receive ussdreceived events. These events occur whenever a new USSD message is received.
Note: MozMobileConnection inherits from the EventTarget interface, so it's also possible to listen for events by using the addEventListener() method.
Syntax
navigator.mozMobileConnection.onussdreceived = funcRef;
Where funcRef is a function to be called when the ussdreceived event occurs.
Specification
Not part of any specification.