Extracting comments from stript by RegEx

Question

I need to remove all comments from a stript. Comments always start from '//'. My RegEx /\/\/.*/g does it but it removes substring if it inside quotes and I want avoid that behavior. Is there an ability to use RegEx for removing comments which are located only outside of quotes?

So you are saying that it should **not** remove something like `"foo //bar"`? — Kaspar Lee, Oct 18 '16 at 14:26
Yes, if there is something like: str="foo//bar//string" it shouldn't remove it, only if slashes are either before or after string. — Michel_T., Oct 18 '16 at 14:30
[This question may help.](http://stackoverflow.com/q/4568410) — Kaspar Lee, Oct 18 '16 at 14:31

rusheb · Answer 1 · 2016-10-18T19:31:04.833

0

You can use negative lookahead (but I don't think this will match //foo "string")

(?!.*")\/\/.*

edited Oct 18 '16 at 19:31

answered Oct 18 '16 at 19:06

rusheb

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Unfortunately javascript doesn't support negative lookahead. – Michel_T. Oct 31 '16 at 14:59

Extracting comments from stript by RegEx

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