javascript - 如何在忽略冠词 (A, an, the) 的同时对 javascript 数组进行排序？

Question

我有以下排序函数来对书籍列表进行排序:

var compare = function(a, b) {
  var aTitle = a.title.toLowerCase(),
      bTitle = b.title.toLowerCase();

  if (aTitle > bTitle) return 1;
  if (aTitle < bTitle) return -1; 
  return 0;
};
var sortedBooks = books.sort(compare);

我如何调整它以便忽略每个标题开头的文章？

Answer 1

您可以简单地使用函数 removeArticles() 来检查句子中是否有多个单词，如果有则返回第二个单词进行比较。对于特定的单词，您只需要为单词添加条件，例如 (words[0] == 'a' || words[0] == 'the' || words[0] == 'an ') 将涵盖 “A”、“An” 和 “The”:

books = ["A Whale", "The Moive", "A Good Time", "The Alphabet 2" , "The Alphabet 1", "Alphabet Soup", "Foo"];

var compare = function(a, b) {
  var aTitle = a.toLowerCase(),
      bTitle = b.toLowerCase();
      
  aTitle = removeArticles(aTitle);
  bTitle = removeArticles(bTitle);
  
  if (aTitle > bTitle) return 1;
  if (aTitle < bTitle) return -1; 
  return 0;
};

function removeArticles(str) {
  words = str.split(" ");
  if(words.length <= 1) return str;
  if( words[0] == 'a' || words[0] == 'the' || words[0] == 'an' )
    return words.splice(1).join(" ");
  return str;
}

var sortedBooks = books.sort(compare);

// [ "The Alphabet 1", "The Alphabet 2", "Alphabet Soup", "Foo", "A Good Time", "The Moive", "A Whale" ]
console.log(sortedBooks);