This API is available on Firefox OS for privileged or certified applications 仅。
onchange
property is used to specify an event handler to receive
change
events. Those events are triggered each time a file is created, modified, or deleted on the storage area.
instanceOfDeviceStorage.onchange = funcRef
Where
funcRef
is a function to be called when the
change
event occurs. These events are of type
DeviceStorageChangeEvent
.
var sdcard = navigator.getDeviceStorage('sdcard');
sdcard.onchange = function (change) {
var reason = change.reason;
var path = change.path;
console.log('The file "' + path + '" has been ' + reason);
}
Not part of any specification.