Checks if a string is an anagram of another string (case-insensitive, ignores spaces, punctuation and special characters). - Use `String.prototype.toLowerCase()` and `String.prototype.replace()` with an appropriate regular expression to remove unnecessary characters. - Use `String.prototype.split()`, `Array.prototype.sort()` and `Array.prototype…

JavaScript - is anagram.js

Checks if a string is an anagram of another string (case-insensitive, ignores spaces, punctuation and special characters).

- Use `String.prototype.toLowerCase()` and `String.prototype.replace()` with an appropriate regular expression to remove unnecessary characters.
- Use `String.prototype.split()`, `Array.prototype.sort()` and `Array.prototype.join()` on both strings to normalize them, then check if their normalized forms are equal.


const isAnagram = (str1, str2) => {
  const normalize = str =>
    str
      .toLowerCase()
      .replace(/[^a-z0-9]/gi, '')
      .split('')
      .sort()
      .join('');
  return normalize(str1) === normalize(str2);
};



isAnagram('iceman', 'cinema'); // true