What does the “?:^” regular expression mean?

Question

I am looking at this sub-expression (this is in JavaScript):

(?:^|.....)

I know that ? means \"zero or one times\" when it fol

Answer 1

?: Generally indicates making the group a non capture. You can do some research here.

I'm almost positive any regex engine should but when I switch between engines I run into some quirks.

Edit: This should be the case, non captures seems to work fine.