根据字符串中的标点将字符串拆分为数组元素-JavaScript

Question

我想按句子将字符串拆分为单独的数组元素。 因此，每个周期后都需要进行拆分。

即这个：

Love is a burning thing and it makes a fiery ring.
Bound by wild desire, I fell in to a ring of fire.

会变成这样：

[ 'Love is a burning thing and it makes a fiery ring.',
 'Bound by wild desire, I fell into a ring of fire', ]

在这种情况下， Array[0]将是"Love is a burning thing and it makes a fiery ring." 。

我尝试了这个：

function splitLyrics(string) {
  let newArray = [];

  for (let i = 0; i < string.length; i++) {
    let character = string[i];
    let sentence = "";

    if (character !== ".") {
      sentence.concat(character);
    }

    newArray.push(sentence);

  }

  return newArray;

}

console.log(splitLyrics("Love is a burning thing and it makes a fiery ring. Bound by wild desire, I fell in to a ring of fire."));

如您所见，我的问题是我不知道如何将各个字符元素组合成句子元素，并在句号之间将其分隔开。

按照现有逻辑，有哪些功能可以实现我想要的功能？

https://www.codewars.com/kata/99-bottles-of-beer-1/train/javascript

Answer 1

使用split函数:)。

string.split(". ");

您可以将其与trim（）结合使用，这样可以删除字符（仅字符串的开头和结尾）周围的空格，如下所示：

const stringArray = string
  .split(".")
  .map(str => str.trim())

每个字符串首先在'。'上分割，然后修剪每个字符串。 这将使代码对于奇怪的空格问题更加健壮。

如果您需要更多选项，建议您使用match / regexp :)

Answer 2

您可以使用正则表达式和.match代替-匹配一个非空格字符，后跟非句点字符，再跟一个句点字符：

 const splitLyrics = str => str.match(/\\S[^.]*\\./g); console.log(splitLyrics("Love is a burning thing and it makes a fiery ring. Bound by wild desire, I fell in to a ring of fire.")); 

这也很容易扩展到其他以句子结尾的标点符号，例如感叹号和问号：

 const splitLyrics = str => str.match(/\\S[^.?!]*[.?!]/g); console.log(splitLyrics("Love is a burning thing and it makes a fiery ring. Bound by wild desire, I fell in to a ring of fire. Foo bar! Bar baz? Buzz.")); 

如果var song = sing(); 是必需的，测试人员将继续调用song ，那么您应该编写一个返回函数的函数，尽管这样做似乎很奇怪：

 const sing = () => str => str.match(/\\S[^.]*\\./g); const song = sing(); console.log(song("Love is a burning thing and it makes a fiery ring. Bound by wild desire, I fell in to a ring of fire.")); 

看来kata希望您粘贴这首歌的整个歌词，然后返回相应的行：

您可以在此处找到完整的歌词。

所以要么做：

 // snippet isn't actually runnable, but it's too much text to paste in the answer proper const sing = () => `99 bottles of beer on the wall, 99 bottles of beer. Take one down and pass it around, 98 bottles of beer on the wall. 98 bottles of beer on the wall, 98 bottles of beer. Take one down and pass it around, 97 bottles of beer on the wall. 97 bottles of beer on the wall, 97 bottles of beer. Take one down and pass it around, 96 bottles of beer on the wall. 96 bottles of beer on the wall, 96 bottles of beer. Take one down and pass it around, 95 bottles of beer on the wall. 95 bottles of beer on the wall, 95 bottles of beer. Take one down and pass it around, 94 bottles of beer on the wall. 94 bottles of beer on the wall, 94 bottles of beer. Take one down and pass it around, 93 bottles of beer on the wall. 93 bottles of beer on the wall, 93 bottles of beer. Take one down and pass it around, 92 bottles of beer on the wall. 92 bottles of beer on the wall, 92 bottles of beer. Take one down and pass it around, 91 bottles of beer on the wall. 91 bottles of beer on the wall, 91 bottles of beer. Take one down and pass it around, 90 bottles of beer on the wall. 90 bottles of beer on the wall, 90 bottles of beer. Take one down and pass it around, 89 bottles of beer on the wall. 89 bottles of beer on the wall, 89 bottles of beer. Take one down and pass it around, 88 bottles of beer on the wall. 88 bottles of beer on the wall, 88 bottles of beer. Take one down and pass it around, 87 bottles of beer on the wall. 87 bottles of beer on the wall, 87 bottles of beer. Take one down and pass it around, 86 bottles of beer on the wall. 86 bottles of beer on the wall, 86 bottles of beer. Take one down and pass it around, 85 bottles of beer on the wall. 85 bottles of beer on the wall, 85 bottles of beer. Take one down and pass it around, 84 bottles of beer on the wall. 84 bottles of beer on the wall, 84 bottles of beer. Take one down and pass it around, 83 bottles of beer on the wall. 83 bottles of beer on the wall, 83 bottles of beer. Take one down and pass it around, 82 bottles of beer on the wall. 82 bottles of beer on the wall, 82 bottles of beer. Take one down and pass it around, 81 bottles of beer on the wall. 81 bottles of beer on the wall, 81 bottles of beer. Take one down and pass it around, 80 bottles of beer on the wall. 80 bottles of beer on the wall, 80 bottles of beer. Take one down and pass it around, 79 bottles of beer on the wall. 79 bottles of beer on the wall, 79 bottles of beer. Take one down and pass it around, 78 bottles of beer on the wall. 78 bottles of beer on the wall, 78 bottles of beer. Take one down and pass it around, 77 bottles of beer on the wall. 77 bottles of beer on the wall, 77 bottles of beer. Take one down and pass it around, 76 bottles of beer on the wall. 76 bottles of beer on the wall, 76 bottles of beer. Take one down and pass it around, 75 bottles of beer on the wall. 75 bottles of beer on the wall, 75 bottles of beer. Take one down and pass it around, 74 bottles of beer on the wall. 74 bottles of beer on the wall, 74 bottles of beer. Take one down and pass it around, 73 bottles of beer on the wall. 73 bottles of beer on the wall, 73 bottles of beer. Take one down and pass it around, 72 bottles of beer on the wall. 72 bottles of beer on the wall, 72 bottles of beer. Take one down and pass it around, 71 bottles of beer on the wall. 71 bottles of beer on the wall, 71 bottles of beer. Take one down and pass it around, 70 bottles of beer on the wall. 70 bottles of beer on the wall, 70 bottles of beer. Take one down and pass it around, 69 bottles of beer on the wall. 69 bottles of beer on the wall, 69 bottles of beer. Take one down and pass it around, 68 bottles of beer on the wall. 68 bottles of beer on the wall, 68 bottles of beer. Take one down and pass it around, 67 bottles of beer on the wall. 67 bottles of beer on the wall, 67 bottles of beer. Take one down and pass it around, 66 bottles of beer on the wall. 66 bottles of beer on the wall, 66 bottles of beer. Take one down and pass it around, 65 bottles of beer on the wall. 65 bottles of beer on the wall, 65 bottles of beer. Take one down and pass it around, 64 bottles of beer on the wall. 64 bottles of beer on the wall, 64 bottles of beer. Take one down and pass it around, 63 bottles of beer on the wall. 63 bottles of beer on the wall, 63 bottles of beer. Take one down and pass it around, 62 bottles of beer on the wall. 62 bottles of beer on the wall, 62 bottles of beer. Take one down and pass it around, 61 bottles of beer on the wall. 61 bottles of beer on the wall, 61 bottles of beer. Take one down and pass it around, 60 bottles of beer on the wall. 60 bottles of beer on the wall, 60 bottles of beer. Take one down and pass it around, 59 bottles of beer on the wall. 59 bottles of beer on the wall, 59 bottles of beer. Take one down and pass it around, 58 bottles of beer on the wall. 58 bottles of beer on the wall, 58 bottles of beer. Take one down and pass it around, 57 bottles of beer on the wall. 57 bottles of beer on the wall, 57 bottles of beer. Take one down and pass it around, 56 bottles of beer on the wall. 56 bottles of beer on the wall, 56 bottles of beer. Take one down and pass it around, 55 bottles of beer on the wall. 55 bottles of beer on the wall, 55 bottles of beer. Take one down and pass it around, 54 bottles of beer on the wall. 54 bottles of beer on the wall, 54 bottles of beer. Take one down and pass it around, 53 bottles of beer on the wall. 53 bottles of beer on the wall, 53 bottles of beer. Take one down and pass it around, 52 bottles of beer on the wall. 52 bottles of beer on the wall, 52 bottles of beer. Take one down and pass it around, 51 bottles of beer on the wall. 51 bottles of beer on the wall, 51 bottles of beer. Take one down and pass it around, 50 bottles of beer on the wall. 50 bottles of beer on the wall, 50 bottles of beer. Take one down and pass it around, 49 bottles of beer on the wall. 49 bottles of beer on the wall, 49 bottles of beer. Take one down and pass it around, 48 bottles of beer on the wall. 48 bottles of beer on the wall, 48 bottles of beer. Take one down and pass it around, 47 bottles of beer on the wall. 47 bottles of beer on the wall, 47 bottles of beer. Take one down and pass it around, 46 bottles of beer on the wall. 46 bottles of beer on the wall, 46 bottles of beer. Take one down and pass it around, 45 bottles of beer on the wall. 45 bottles of beer on the wall, 45 bottles of beer. Take one down and pass it around, 44 bottles of beer on the wall. 44 bottles of beer on the wall, 44 bottles of beer. Take one down and pass it around, 43 bottles of beer on the wall. 43 bottles of beer on the wall, 43 bottles of beer. Take one down and pass it around, 42 bottles of beer on the wall. 42 bottles of beer on the wall, 42 bottles of beer. Take one down and pass it around, 41 bottles of beer on the wall. 41 bottles of beer on the wall, 41 bottles of beer. Take one down and pass it around, 40 bottles of beer on the wall. 40 bottles of beer on the wall, 40 bottles of beer. Take one down and pass it around, 39 bottles of beer on the wall. 39 bottles of beer on the wall, 39 bottles of beer. Take one down and pass it around, 38 bottles of beer on the wall. 38 bottles of beer on the wall, 38 bottles of beer. Take one down and pass it around, 37 bottles of beer on the wall. 37 bottles of beer on the wall, 37 bottles of beer. Take one down and pass it around, 36 bottles of beer on the wall. 36 bottles of beer on the wall, 36 bottles of beer. Take one down and pass it around, 35 bottles of beer on the wall. 35 bottles of beer on the wall, 35 bottles of beer. Take one down and pass it around, 34 bottles of beer on the wall. 34 bottles of beer on the wall, 34 bottles of beer. Take one down and pass it around, 33 bottles of beer on the wall. 33 bottles of beer on the wall, 33 bottles of beer. Take one down and pass it around, 32 bottles of beer on the wall. 32 bottles of beer on the wall, 32 bottles of beer. Take one down and pass it around, 31 bottles of beer on the wall. 31 bottles of beer on the wall, 31 bottles of beer. Take one down and pass it around, 30 bottles of beer on the wall. 30 bottles of beer on the wall, 30 bottles of beer. Take one down and pass it around, 29 bottles of beer on the wall. 29 bottles of beer on the wall, 29 bottles of beer. Take one down and pass it around, 28 bottles of beer on the wall. 28 bottles of beer on the wall, 28 bottles of beer. Take one down and pass it around, 27 bottles of beer on the wall. 27 bottles of beer on the wall, 27 bottles of beer. Take one down and pass it around, 26 bottles of beer on the wall. 26 bottles of beer on the wall, 26 bottles of beer. Take one down and pass it around, 25 bottles of beer on the wall. 25 bottles of beer on the wall, 25 bottles of beer. Take one down and pass it around, 24 bottles of beer on the wall. 24 bottles of beer on the wall, 24 bottles of beer. Take one down and pass it around, 23 bottles of beer on the wall. 23 bottles of beer on the wall, 23 bottles of beer. Take one down and pass it around, 22 bottles of beer on the wall. 22 bottles of beer on the wall, 22 bottles of beer. Take one down and pass it around, 21 bottles of beer on the wall. 21 bottles of beer on the wall, 21 bottles of beer. Take one down and pass it around, 20 bottles of beer on the wall. 20 bottles of beer on the wall, 20 bottles of beer. Take one down and pass it around, 19 bottles of beer on the wall. 19 bottles of beer on the wall, 19 bottles of beer. Take one down and pass it around, 18 bottles of beer on the wall. 18 bottles of beer on the wall, 18 bottles of beer. Take one down and pass it around, 17 bottles of beer on the wall. 17 bottles of beer on the wall, 17 bottles of beer. Take one down and pass it around, 16 bottles of beer on the wall. 16 bottles of beer on the wall, 16 bottles of beer. Take one down and pass it around, 15 bottles of beer on the wall. 15 bottles of beer on the wall, 15 bottles of beer. Take one down and pass it around, 14 bottles of beer on the wall. 14 bottles of beer on the wall, 14 bottles of beer. Take one down and pass it around, 13 bottles of beer on the wall. 13 bottles of beer on the wall, 13 bottles of beer. Take one down and pass it around, 12 bottles of beer on the wall. 12 bottles of beer on the wall, 12 bottles of beer. Take one down and pass it around, 11 bottles of beer on the wall. 11 bottles of beer on the wall, 11 bottles of beer. Take one down and pass it around, 10 bottles of beer on the wall. 10 bottles of beer on the wall, 10 bottles of beer. Take one down and pass it around, 9 bottles of beer on the wall. 9 bottles of beer on the wall, 9 bottles of beer. Take one down and pass it around, 8 bottles of beer on the wall. 8 bottles of beer on the wall, 8 bottles of beer. Take one down and pass it around, 7 bottles of beer on the wall. 7 bottles of beer on the wall, 7 bottles of beer. Take one down and pass it around, 6 bottles of beer on the wall. 6 bottles of beer on the wall, 6 bottles of beer. Take one down and pass it around, 5 bottles of beer on the wall. 5 bottles of beer on the wall, 5 bottles of beer. Take one down and pass it around, 4 bottles of beer on the wall. 4 bottles of beer on the wall, 4 bottles of beer. Take one down and pass it around, 3 bottles of beer on the wall. 3 bottles of beer on the wall, 3 bottles of beer. Take one down and pass it around, 2 bottles of beer on the wall. 2 bottles of beer on the wall, 2 bottles of beer. Take one down and pass it around, 1 bottle of beer on the wall. 1 bottle of beer on the wall, 1 bottle of beer. Take one down and pass it around, no more bottles of beer on the wall. No more bottles of beer on the wall, no more bottles of beer. Go to the store and buy some more, 99 bottles of beer on the wall.`.split('\\n').filter(Boolean) 

或者，对于这个特殊的 “歌”，这是非常重复，你可以创建自己的歌词，这可能是运动的角度来看，虽然这不是很清楚的：

 const sing = () => [ ...Array.from( { length: 98 }, (_, i) => [ `${99 - i} bottles of beer on the wall, ${99 - i} bottles of beer.`, `Take one down and pass it around, ${99 - i - 1} bottles of beer on the wall.` ] ).flat(), `1 bottle of beer on the wall, 1 bottle of beer.`, `Take one down and pass it around, no more bottles of beer on the wall.`, `No more bottles of beer on the wall, no more bottles of beer.`, `Go to the store and buy some more, 99 bottles of beer on the wall.` ]; const song = sing(); console.log(song[0] === '99 bottles of beer on the wall, 99 bottles of beer.');