Match only if not preceded or followed by a digit

Question

I have this regular expression to look for phone numbers in a codebase:

\\\\d{3}[\\.\\s-]?\\d{3}[\\.\\s-]?\\d{4}\\g

How can I modify this so th

Answer 1

Lookahead and lookbehind will help you with these restrictions - if they are supported, like

/(?<!\d)\d{3}[.\s-]?\d{3}[.\s-]?\d{4}(?!\d)/g

You can replace the lookbehind (?<!\d) with (?:^|\D) if it is not supported. You can replace the lookahead (?!\d) with (?:\D|$) if it is not supported.

You can find a demo here: https://regex101.com/r/aS8jQ8/1