Open source number converter web. It allows you to convert numbers from one numeral system to another, such as Decimal to Binary, Binary to Decimal, and more.
In that you are just using first character of string to check whether it in hexadecimal range or not.
you need to do it for all character of string, if first character is passed
git1508hub
commented
1 year ago 
Ukhang
example: inputDropVal == "Hexadecimal" inp == "dadaakakdkakkld" give me outputDropVal == "Binary" op == "11011010110110101010"