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