Anagram strings in Javascript

Number of deletions needed to make two random strings, anagrams of each other in Javascript

by Farzad YZ

JavaScript

function anagrams(a, b) {
  var freqA = charFreq(a);
  var freqB = charFreq(b);
  var deletions = 0;

  getChars().forEach(char => {
    deletions += Math.max(freqA[char], freqB[char]) - Math.min(freqA[char], freqB[char]);
  });

  return deletions;
}

function getChars() {
  return 'abcdefghijklmnopqrstuvwxyz'.split('');
}

function charFreq(str) {
  var chars = getChars();
  str = str.toLowerCase();
  var freq = {};
  chars.forEach(char => {
    var charNum = str.split('').filter(x => x === char);
    freq[char] = charNum ? charNum.length : 0;
  });
  return freq;
}


console.log(anagrams('cde', 'abc'));
console.log(anagrams('farzad', 'ebad'));
console.log(anagrams('salam',...