JS: code help

Question

I’m in the process of making an image slider. With next and previous buttons.

I had the next button working just fine. And then I added the “previous” button. Still worked fine.

The problem is when you click next and get to 9:8 (console)
I tried to change numbers around and tried to figure out, but not sure what’s happening.

https://code.sololearn.com/WVFKv0ICtAd8/?ref=app

Answer 1

Replace lines 21 and 22 with "else".

Answer 2

if(i > 9){
i = 0;
x = 9;
}
else
if(i == 1){
x = 0}
else
if (i <= 9){
x = i - 1;
}