clear method
The clear()
method of the IDBObjectStore
interface creates and immediately returns an IDBRequest object, and
clears this object store in a separate thread. This is for deleting all
the current
data out of an object store.
Clearing an object store consists of removing all records from the object store and removing all records in indexes that reference the object store. To remove only some of the records in a store, use IDBObjectStore.delete passing a key or IDBKeyRange.
Implementation
external IDBRequest clear();