How does it work?

Question

Uhhh... how can I be so stup*d ^_^...
Can you please guys help me...
how does this code work?????

var arr=[4,5,3,2]

for(var i=0; i<arr.length; i++){
arr[i]*=i;
}
alert(arr[i/2]);

result: 6

Thanks for your answer...

Answer 1

For each variable in arr, the variable is multiplied by the array index.

Resulting arr = [0, 5, 6, 6]

alert(arr[i/2]) alerts the element at index i/2 in arr, which is the 3rd element (index 2), 6.

Answer 2

After for loop values of array are:
0 <- 4*0
5. <- 5*1
6. <- 3*2
6. <- 2*3

i equals 4 now, so arr[4/2] = arr[2] = 6
Hope it helped!