正则表达式:字符串匹配(包括标点符号) [英] Regex: String match including punctuation

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问题描述

从另一个问题,我使用此表达式来匹配句子中的单词:

From another question, I have this expression to match words in a sentence:

var sentence = "Exclamation! Question? Full stop. Ellipsis...";
console.log(sentence.toLowerCase().match(/\w+(?:'\w+)*/g));

它完美地工作.但是,现在我正在寻找一种分别匹配感叹号,问号和句号的方法.结果应如下所示:

It works perfectly. However, now I am looking for a way to match exclamation marks, question marks, and full stops separately. The result should look like this:

[
  "exclamation",
  "!",
  "question",
  "?",
  "full",
  "stop",
  ".",
  "ellipsis",
  "."
]

仅匹配省略号中的一个点,而不是分别匹配所有三个点.

Only matching one dot from the ellipsis, not all three dots separately.

任何帮助将不胜感激!

推荐答案

使用单词边界仅从省略号返回一个点怎么样?

How about using a word boundary to only return one dot from the ellipsis?

var sentence = "Exclamation! Question? Full stop. Ellipsis...";
console.log(sentence.toLowerCase().match(/[a-z]+(?:'[a-z]+)*|\b[!?.]/g));

或否定的前瞻:

var sentence = "Exclamation! Question? Full stop. Ellipsis...";
console.log(sentence.toLowerCase().match(/[a-z]+(?:'[a-z]+)*|[!?.](?![!?.])/g));

在您对场景扩展进行了评论之后,向后隐式看似有效.

After your commented scenario extension, a negative lookbehind seems to be effective.

var sentence = "You're \"Pregnant\"??? How'd This Happen?! The vasectomy YOUR 1 job. Let's \"talk this out\"...";
console.log(sentence.toLowerCase().match(/[a-z\d]+(?:'[a-z\d]+)*|(?<![!?.])[!?.]/g));

这篇关于正则表达式:字符串匹配(包括标点符号)的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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