Can you describe this code for me?

Question

var arr =[1,2,3,4]
var count=0
for(var x = 0; x<arr.lenght; x++){
x=arr[x]
count++
}
document.write(count)

Answer 1

I don't know much JavaScript but I think it is easy

the for loop iterates until x reaches the length of array.

Let's make it more simple.

count. = 0
arr.length = 4

arr = [1,2,3,4]
indx 0 1 2 3

so loop is like

for (x = 0; x<4, x++){
x = arr[x]
count = count + 1;
}

So, first it will iterate and the values will be

x = arr[0]
x = 1
count will become 1

Similarly for second time

x = arr[1] // x become one above
(x = 2)
count will become 2

.
.
.

x = arr[3]
(x = 4)
count will become 4 as well

But now the loop will not continue because arr.length was 4
x has also become 4. So x is no longer less than arr.length

so document.write(count)

Will write 4 as count has also become 4.

I hope you understand.

If my answer is wrong, tell me!

Answer 2

Thanks for your help😉😉