API Reference > bentleyjs-core > Ids > Id64 > Id64.fromString Id64.fromString Function Given a string value, attempt to normalize it into a well-formed Id string. If the input is already a well-formed Id string, it is returned unmodified. Otherwise, the input is trimmed of leading and trailing whitespace, converted to lowercase, and an attempt is made to parse it as a 64-bit hexadecimal integer. If parsing succeeds the normalized result is returned; otherwise the result is "0", indicating an invalid Id. For a description of "well-formed", see Working with Ids. fromString(val: string): Id64String Parameter Type Description val string Returns - Id64String Defined in core/bentley/src/Id.ts Line 112 Last Updated: 11 June, 2024