正则表达式，以匹配成对的正斜杠，但不能转义，也不能在后续的http：//之间

Question

I'm trying to build a regular expression that can match paired forward slashes (eg /something/ ), but skip escaped pairs (eg \\/something\\/ ) and also skip something like subsequent URL's (eg http://something.com and stuff http://somethingelse.org ).

So, in the following example, only the text "jumped over" would be matched, nothing else would be a match:

The quick brown fox /jumped over/ the lazy dogs. He was looking for a 
\/website\/ to help him find ways around the dogs because he was sick of 
\/jumping\/ over them. Unfortunately, both http://routesaroundlazydogs.com/ and 
https://maps.lazydogs.com/stuff/things/findmap.aspx were both down on the day he 
was looking.

The regex has to work in Javascript (ie no look-behinds).

Answer 1

How about using this regex:

\\\/.*?\\\/|\/\/\S*|\/(.*?[^\\])\/

And use matched group #1 for your match.

Regex Demo

Answer 2

  (^|\s+)/([A-Z0-9a-z ]+)/\s+

Debuggex Demo

Answer 3

Tricky, since you probably want foo /bar/ foo /bar/ foo to not match / foo / .

I'd suggest finding a url regex, then doing input.replace(urlRegex, "") , then writing a simple parser to read in the / pairs instead of a regex.