Disarium number finder doesn’t work

Question

I am making a Disarium number finder for the challenge. It finds one, but it won’t work for finding them in a given range. It just says undefined. Why does this happen? Here is the code:
https://code.sololearn.com/WWnZk8k8f9Ci/?ref=app

Answer 1

Hi Lucas Nioi,

Change the argument of the "charAt" method at line 26 from "i" to "a" and assign 0 to "a" after the inner loop at line 25 and it'll work.