Module background/methods/dataTypes/objects/ObjectKeysTS

hasKey

• hasKey<O>(obj: O, key: string | number | symbol): key is keyof O

• "If the key is in the object, return true, otherwise return false."

  The keyof any is a special type that represents the union of all property names of a given type

  Type parameters

  • O

  Parameters

  • obj: O

    The object to check for the key.

  • key: string | number | symbol

    keyof any

  Returns key is keyof O

  does the given object have the given key