This is a JavaScript function that returns ALL the possible combinations of whatever word the user enters. I am looking to clean this code up a bit...any and all suggestions are welcome!

  function allAnagrams (word) {
  if (word.length < 2) {
    return [word];
  } else {
      var allAnswers = [];
      for (var i = 0; i < word.length; i++) {
        var letter = word[i];
        var shorterWord = word.substr(0, i) + word.substr(i + 1, word.length - 1);
        var shortwordArray = allAnagrams(shorterWord);
        for (var j = 0; j < shortwordArray.length; j++) {
          allAnswers.push(letter + shortwordArray[j]);
        }
      }
      return allAnswers;
  }
}

allAnagrams("")