The loop didn't run

My loop in checkArr2 didn’t run but in checkArr3 ran.
Here my link: https://codepen.io/markhollander/pen/RazWzz

Hello,

This isn’t running for me at all. There are numerous style issues that could be causing bugs. Always use {} with your if statements and for loops.

I realize it’s been over two weeks - did you find an answer?