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Interface IDBKeyRange

A key range can be a single value or a range with upper and lower bounds or endpoints. If the key range has both upper and lower bounds, then it is bounded; if it has no bounds, it is unbounded. A bounded key range can either be open (the endpoints are excluded) or closed (the endpoints are included). To retrieve all keys within a certain range, you can use the following code constructs:

Hierarchy

  • IDBKeyRange

Index

Properties

Methods

Properties

Readonly lower

lower: any

Returns lower bound, or undefined if none.

Readonly lowerOpen

lowerOpen: boolean

Returns true if the lower open flag is set, and false otherwise.

Readonly upper

upper: any

Returns upper bound, or undefined if none.

Readonly upperOpen

upperOpen: boolean

Returns true if the upper open flag is set, and false otherwise.

Methods

includes

  • includes(key: any): boolean
  • Returns true if key is included in the range, and false otherwise.

    Parameters

    • key: any

    Returns boolean

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