Bitwise AND of Numbers Range LeetCode solution in JavaScript

1
var rangeBitwiseAnd = function (left, right) {
2
  const a = left.toString(2);
3
  const b = right.toString(2);
4

5
  if (a.length !== b.length) {
6
    return 0;
7
  }
8

9
  let match = 0;
10

11
  for (let i = 0; i < a.length; i++) {
12
    if (a[i] !== b[i]) {
13
      break;
14
    }
15

16
    match++;
17
  }
18

19
  return parseInt(b.substring(0, match).padEnd(b.length, "0"), 2);
20
};