如何使用javascript生成字母表的单词列表

var alphabet = [];
for (var i = 97; i <= 122; i++) {
  alphabet.push(String.fromCharCode(i));
}

function generateWordList(length) {
  var wordList = [];
  for (var i = 0; i < alphabet.length; i++) {
    var word = alphabet[i];
    if (length > 1) {
      generateWords(word, length - 1);
    }
  }
  return wordList;
}

function generateWords(word, length) {
  if (length === 0) {
    wordList.push(word);
    return;
  }
  for (var i = 0; i < alphabet.length; i++) {
    var newWord = word + alphabet[i];
    generateWords(newWord, length - 1);
  }
}

var wordList = generateWordList(3);
console.log(wordList);