My code passes all my tests but some how edabit is not approving it

function bitwiseAND(n1, n2) {
  let a = n1.toString(2).padStart(8, "0");
  let b = n2.toString(2).padStart(8, "0");
  let x = "";
  for (let i = 0; i < 8; i++) {
     if (+a[i] === 1 && +a[i] === +b[i]) x = x + "1";
     else x = x + "0";
}
return +x
}

function bitwiseOR(n1, n2) {
  let a = n1.toString(2).padStart(8, "0");
  let b = n2.toString(2).padStart(8, "0");
  let x = "";
  for (let i = 0; i < 8; i++) {
    if (+a[i] === 1 || +b[i] === 1) x = x + "1";
    else x = x + "0";
}
return +x
}

function bitwiseXOR(n1, n2) {
  let a = n1.toString(2).padStart(8, "0");
  let b = n2.toString(2).padStart(8, "0");
  let x = "";
  for (let i = 0; i < 8; i++) {
    if ((+a[i] === 1 && +b[i] === 0) || (+a[i] === 0 && +b[i] === 1))
      x = x + "1";
    else x = x + "0";
}
return +x
}

This is link to the challenge

challenge was to Write three functions to calculate the bitwise AND, bitwise OR and bitwise XOR of two numbers.

Your code is good, the only thing that is missing is to convert the binary to an integer on your return values.

Insted of

return +x

Try

return parseInt(x, 2)