API Reference > bentleyjs-core > Ids > Id64 > Id64.isValid Id64.isValid Function Returns true if the input is not equal to the representation of an invalid Id. isValid(id: Id64String): boolean note This method assumes the input is a well-formed Id string. see Id64.isInvalid see Id64.isValidId64 Parameter Type Description id Id64String Returns - boolean Defined in core/bentley/src/Id.ts Line 452 Last Updated: 13 June, 2024