Rosetta Code: 100 doors not correct result

JavaScript
1

Tell us what’s happening:
I don’t understand what I am wrong. what is the outcome of the result.

Your code so far


function getFinalOpenedDoors(numDoors) {
// Good luck!
var arr = [...Array(numDoors).keys()]
        .fill(false);
for(var i = 1; i <= numDoors; i++){
    arr = arr.map((x, j) => {
            if(j % i === 0)
              return !x;
            else
              return x;
          });
}
return arr;          
}

Your browser information:

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:74.0) Gecko/20100101 Firefox/74.0.

Challenge: 100 doors

Link to the challenge: