正则表达式删除空格并匹配确切的单词(regex remove whitespaces and match exact words)

正则表达式删除空格并匹配确切的单词(regex remove whitespaces and match exact words)

我真的不知道正则表达式，所以有人可以举例说明如何修复这个正则表达式http://rubular.com/r/UdzYMJc9iE ：

/\b([stack over flow]+)+\b/

不匹配空格并且只匹配精确的单词（堆栈匹配ac作为单词，我想只匹配堆栈），tia。

我希望当我们'norem etiam nam'只匹配正则表达式中的这三个单词时，没有空格。

我尝试使用\ s，\ S，/ x，但没有结果..

I'm don't know regex really well, so can someone give me example how to fix this regex http://rubular.com/r/UdzYMJc9iE:

/\b([stack over flow]+)+\b/

not to match whitespaces and to match only exact words (stack matches ac as word, I want to match only stack), tia.

I want when we have 'lorem etiam nam' to match only these exact 3 words from the regex, without spaces.

I tried using \s, \S, /x, but there was no result..

最满意答案

如果您只想匹配三个选项，请使用| 语法，并将它们分组为普通括号：

/\b(stack|over|flow)+\b/

不确定+或您想要匹配的内容。

If you only want to match three alternatives, use the | syntax, and group them into normal parenthesis:

/\b(stack|over|flow)+\b/

Not sure about the + or what exactly you wanted to match.