Minimum Numbers of Function Calls to Make Target Array LeetCode solution in JavaScript

1
var minOperations = function (nums) {
2
  let maxpow = 0,
3
    ans = 0,
4
    pow,
5
    val;
6
  for (let i = 0; i < nums.length; i++) {
7
    for (val = nums[i], pow = 0; val > 0; ans++)
8
      if (val % 2) val--;
9
      else pow++, (val /= 2);
10
    ans -= pow;
11
    if (pow > maxpow) maxpow = pow;
12
  }
13
  return ans + maxpow;
14
};