I didn't understand a result of a JavaScript challenge

Question

Here is the code
var arr = [4,5,3,2];
for (int=0; i<arr.length; i++) {
arr[i] *= i;
}
alert(arr[i/2]);

And the result is 6

Answer 1

So basically, the for loop runs and it will multiple an element with whatever the value of variable i is at a time.

like
i = 0 and arr[i] = 4 so arr[i] *= i will make it 0,

this will happen for all the elements, at the end value of i will be 4 because that's the length of array.
now arr[i/2] is arr[2] which was 3 before loop run but after that it is now 6 because 3 * 2 is 6.

Answer 2

anh ouais c vrai

Answer 3

Thank you very much Rick. It's clear to m'y mind now☺

Answer 4

il manque des trucs à ton code

Answer 5

par exemple là déclaration de i

Answer 6

Oui Max Andy. J'ai omis d'écrire le i en voulant le déclarer dans la condition de la boucle for

Answer 7

et aussi le alert(arr[i/2]) doit être dans la boucle for

Answer 8

si non elle considère la dernière valeur du i qui est 3

Answer 9

A la fin de la boucle le i est 4 car il est incrémenter par la suite.

Answer 10

Thought array count start with zero 0123 which makes it 3*2=6