Regex: Match specific words between two string

Question

I ended up joining this community because I can not find a solution to my problem.

I have a regular expression that only matches all strings between two words, but I need to match specific words between those two words, not all string.

I have this regular expression:

(?<=START).+?(?=END)

I am programming with JavaScript and use the website regex101 to edit regular expressions.

Thanks for attention and help.

Answer 1

To match WORD1 or WORD2 between START and END try this:

(?<=START).*(WORD1|WORD2).*(?=END)

The regex101.com website is the best way to create, try and edit regular expressions - keep trying it.