Hi there!
I'm studying web programming. And recently I decided to have some practice and make my own BJ calculator. All code has been written on JavaScript (that means it is easy to see all algorithms, cuz code isn't hidden). Please try it and lemme know about your experience. I hope for your understanding I tried to make it as good as I can, but maybe you think I should change smth, so I wait for your feedback!
Here is the link http://blackjackcalc.000webhostapp.com