ReadonlylowerThe lower read-only property of the The lower bound of the key range (can be any type.) The following example illustrates how you'd use a key range.
ReadonlylowerThe lowerOpen read-only property of the lower-bound value is included in the key range.
ReadonlyupperThe upper read-only property of the The upper bound of the key range (can be any type.) The following example illustrates how you'd use a key range.
ReadonlyupperThe upperOpen read-only property of the upper-bound value is included in the key range.
The
IDBKeyRangeinterface of the IndexedDB API represents a continuous interval over some data type that is used for keys.MDN Reference