Explain Js challenge code

Question

https://code.sololearn.com/W3EkcSWEcmYf/?ref=app

Answer 1

Well I would have explained it but i think your code is missing something and its not working

Answer 2

Just put any condition in line 4 like

If(arr[i]%2===0)

But here is what the answer will always be zero
The reason is because the starting value of x is 0 so anything multiplied by 0 is 0

Answer 3

I copied it from sololearn java script challenge but it is fault in line 4.

Answer 4

can you fix it and explain?