The id read-only property of the DataStoreTask interface returns the identifier of the changed record in the data store. This must return null if the operation is cleared or done.
The operation read-only property of the DataStoreTask interface returns the type of operation that represents the current change that has been made to the data store.
The revisionId read-only property of the DataStoreTask interface returns the id of the current revision of the data store, i.e. the current change that has been made to a data record.
The indexedDB property of the IDBEnvironment interface provides a mechanism for applications to asynchronously access the capabilities of indexed databases.
The add() method of the DataStore interface adds a new record to the data store; if the record you are attempting to add already exists, it will throw an exception.
The onchange event handler of the DataStore interface fires when a change is made to the data store. Its main use is to synchronize different apps that are using the data store when a change is made. When fired, this event returns a DataStoreChangeEvent, which can be used to handle the change that was just made. Alternatively, when the event fires you could create a DataStoreCursor and iterate through all the records, if needed.