Write a JavaScript program to check whether it is possible to rearrange characters of a given string in such way that it will become equal to another given string

function rearrangement_characters(str1, str2) {

  var first_set = str1.split(''),
      second_set = str2.split(''),
      result = true;

  first_set.sort();
  second_set.sort();

  for (var i = 0; i < Math.max(first_set.length, second_set.length); i++) {
    if (first_set[i] !== second_set[i]) {
      result = false;
    }
  }

  return result;
}

console.log(rearrangement_characters("xyz", "zyx"))
console.log(rearrangement_characters("xyz", "zyp"))