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: string): boolean note This method assumes the input is a well-formed Id string. see Id64.isInvalid see Id64.isValidId64 Parameter Type Description id string Returns - boolean Defined in core/bentley/src/Id.ts Line 490 Last Updated: 11 June, 2024