问题描述
我正在尝试使用正则表达式在2个完整单词之间搜索内容.例如:
I'm attempting to search for content between 2 whole words using a regular expression. For example:
在上面的字符串中，我想找到单词all和to之间的内容:
In the above string I want to find the content between the word all and to:
(?<=all).*?(?=to)/g
但是，由于没有指示仅在整个单词之间进行搜索，因此它找到了两个匹配项:
However, it's finding two matches since the expression is not instructed to search between whole words only:
" the girls went " //between all and to
" in " //between m(all) and (to)wn
我曾想过在表达式中添加空格，如下所示:
I had thought to add spaces in the expression, like this:
(?<= all ).*?(?= to )/g
但是在上面的字符串中将不起作用，因为all是句子的第一个单词.
but this will not work in the above string since all is the first word of the sentence.
如何编写表达式，以便它仅在2个完整单词之间找到所有适当的内容，而没有部分单词匹配，如示例所示?
How can I write the expression so that it finds all appropriate content between 2 whole words only, without partial word matches as shown in the example?
推荐答案
添加单词边界
(?<=\ball\b).*?(?=\bto\b)
\ b是一个无宽度的单词边界.它匹配单词的开头或结尾(当然是由正则表达式定义的)
\b is a no-width word boundary. It matches the beginning or end of a word (as defined by regex, of course)
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