Check if two strings are anagram in Javascript

//function to check if two strings are anagram
function isAnagram(str1, str2) {
  // convert both strings to lowercase
  str1 = str1.toLowerCase();
  str2 = str2.toLowerCase();

  // create an array of characters from the first string
  const arr1 = str1.split("");

  // create an array of characters from the second string
  const arr2 = str2.split("");

  // sort the arrays
  arr1.sort();
  arr2.sort();

  // compare the arrays
  if (arr1.toString() === arr2.toString()) {
    return true;
  } else {
    return false;
  }
}

//example
const result = isAnagram("listen", "silent");

//output
console.log(result); //true