Optional
lowerOpen: booleanOptional
upperOpen: booleanReturns a new IDBKeyRange starting at key with no upper bound. If open is true, key is not included in the range.
Optional
open: booleanReturns a new IDBKeyRange spanning only key.
Returns a new IDBKeyRange with no lower bound and ending at key. If open is true, key is not included in the range.
Optional
open: boolean
Returns a new IDBKeyRange spanning from lower to upper. If lowerOpen is true, lower is not included in the range. If upperOpen is true, upper is not included in the range.