问题
I'm attempting to search for content between 2 whole words using a regular expression. For example:
all the girls went to the mall in town.
In the above string I want to find the content between the word all and to:
(?<=all).*?(?=to)/g
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
I had thought to add spaces in the expression, like this:
(?<= all ).*?(?= to )/g
but this will not work in the above string since all is the first word of the sentence.
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?
回答1:
Add word boundaries
(?<=\ball\b).*?(?=\bto\b)
\b is a no-width word boundary. It matches the beginning or end of a word (as defined by regex, of course)
来源：https://stackoverflow.com/questions/6079243/regular-expression-global-search-between-2-whole-words