It will works if every number rise to power and than compare with 285.

Because of the check code. I just spent about 30 minutes trying to figure this out - The types of the two check codes appear to be different so I had to use === rather than == to check them. Then it worked.

The result of 8'th test is:
currentDate = September 5, 2014
expirationDate = September 25, 2014
Date.parse(currentDate) = 1409875200000
Date.parse(expirationDate) = 1411603200000
enteredCode str= 2
correctCode str= 2
Expected: false, instead got: true

Why is it expecting false????