Const isNan

• isNan(val: unknown): boolean

• Checks if the given value is NaN. The difference with the native isNaN function is that this will not return true for strings or other types and only for the NaN value, the only value that doesn't equals itself.

  example

  isNan(NaN); // true isNan('not NaN'); // false isNan(null); // false

  Parameters

  • val: unknown

    The value to check.

  Returns boolean

  Whether the value is NaN.