Converting binary to hexadecimal

Question

I am converting binary to hexadecimal but the code below returns a wrong answer:

var number = 1011;
var hexa = parseInt(number, 2).toString(16);
return hexa;

This returns b but it should have to be return B. What is the problem?

Answer 1

'b' is correct. Hexadecimal doesn't specify letter case, and many write hex strings with lower-case letters.

Answer 2

Just add toUpperCase():

var hexa = parseInt(number, 2).toString(16).toUpperCase();