Checking for Numbers

is_number(input: any): boolean

param input - Anything to test if it is a number or not

returns: - boolean - True if it is a 'number' false otherwise. Infinity and NaN are defined to not be numbers in Hedgehog Lab. You can use hex and binary inputs as numbers - 0xfff0 etc.

This function tests if the input is a number or not. It does not allow strings, infinity, NaN. It checks type too.