This API is available on Firefox OS for internal applications only.
Summary
The settingValue property of the MozSettingsEvent object returns the setting's new value.
Syntax
var value = instanceOfMozSettingsEvent.settingValue;
Value
Typically a string or number, this is the value of the affected setting.
Specification
Not part of any specification yet; however, this API will be discussed at W3C as part of the System Applications Working Group.