Javascript Regex Lookbehind 替代方案 [英] Javascript Regex Lookbehind Alternative

问题描述

我想捕捉没有空格的单词.

I want to catch word with non-space.

var paragraphy="Apple banana kişiler ki örnek foo.";
var word="kişiler"; 
var regex = new RegExp("(?:[\\s>]|^)("+word+")(?=[.,;?!]?(?:[<\\s])|$)", "gi");
console.log(paragraphy.match);

这会打印:["kişiler"] 但我想要这个结果:["kişiler"]我必须使用 Positive Lookbehind，但 JavaScript 不支持它.有没有替代的解决方案?

This prints: [" kişiler"] but I want this result: ["kişiler"] I must use Positive Lookbehind but it is not supported in JavaScript. Is there an alternative solution?

推荐答案

既然你不能使用 unicode 字符的单词边界，让我们匹配空格但将单词分组以检索它:

Since you can't use word boundaries with unicode characters, let's match the spaces but group the word to retrieve it :

(?:^|\s)(<your word>)(?:\s|$)

匹配后，第 1 组应该是预期的单词.

After a match, group 1 should be the expected word.

例如:

var regex = /(?:^|\s)(kişiler)(?:\s|$)/
var paragraphy="Apple banana kişiler ki örnek foo."
paragraphy.match(regex)[1]
> "kişiler"

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