Great! I've learned something new. How does this compare to using parseInt? What I've typically done

http://stackoverflow.com/questions/600293/how-to-check-if-a-number-is-a-power-of-2

@ca6age:

var handled = ending.replace(/[.+]/g, '\$&');
return new RegExp(handled + "$", "i").test(str);

Regex was my initial thought but I didn't know how it will handle string with regex symbols like '.', '+', etc.
Any clues about that?