This method may raise a DOMException with a DOMError of the following types:
Sets cursor to key if specified, otherwise advances cursor by one.
calling this method twice from the same onsuccess handler results in a InvalidStateError DOMException being thrown on the second call W3C
Returns an IDBRequest object, and, in a separate thread, deletes the record at the cursor's position, without changing the cursor's position.
Is a DOMString that, on getting, returns the direction of traversal of the cursor.
Returns the key for the record at the cursor's position.
Returns the cursor's current effective key.
On getting, this object returns the IDBObjectStore or IDBIndex that the cursor is iterating.
Returns an IDBRequest object, and, in a separate thread, updates the value at the current position of the cursor in the object store.