在JavaScript中搜索最后一个单词 [英] Searching for a last word in JavaScript

问题描述

我正在为句子上的最后一个字做一些逻辑。单词由空格或 - 字符分隔。

I am doing some logic for the last word that is on the sentence. Words are separated by either space or with a '-' character.

获取它的最简单方法是什么？

What is easiest way to get it?

编辑

我可以通过从句子末尾向后移动来做到这一点，但我想找到更好的方法

I could do it by traversing backwards from the end of the sentence, but I would like to find better way

推荐答案

尝试拆分匹配空格或连字符并使用最后一个元素的正则表达式：

Try splitting on a regex that matches spaces or hyphens and taking the last element:

var lastWord = function(o) {
  return (""+o).replace(/[\s-]+$/,'').split(/[\s-]/).pop();
};
lastWord('This is a test.'); // => 'test.'
lastWord('Here is something to-do.'); // => 'do.'

正如@alex指出的那样，值得修剪任何尾随空格或连字符。确保参数是一个字符串也是一个好主意。

As @alex points out, it's worth trimming any trailing whitespace or hyphens. Ensuring the argument is a string is a good idea too.

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