delivery property represents the current state of the message delivery from the device perspective.
var state = instanceOfMozSmsMessage.delivery;
A string which can be one of the following:
sending: The message is in the process of being sent.
sent: The message has been sent by the device.
received: The message has been received on the device.
error: The sending process has encountered a problem and the message has not been sent.
This is a non-standard implementation, but it is discussed at W3C as part of the System Application Working Group.
|Messaging API||Editor's Draft||Editor Draft (WIP).|
For obvious reasons, support is primarily expected on mobile browsers.
Supported in Firefox OS 1.0.1.