javascript - Why is non-greedy character not acting 'non-greedy'? -


I am working with a regex in javascript.

I have this regex: /

and this string: / path / to / file

I hope to get the / file as a result, but instead getting the whole string back. What do I not understand here? ? should be made of + non-greedy, which means it will match some of the most possible characters.

Regular expression will always try to match from left to right even if . +? is non-greedy, however, if possible it will try to match the beginning of the string and will only advance the situation in the event of failure of the match.

You have a few options to fix this:

  • Include a greedy match at the beginning of the ragge so that your mail always starts in the string as possible and a capturing What group do you want to hold here can be regex like /.* (\ /. +?) $ / , and then you get the first code as the group's content as / File will be
  • Change regex to . +? could not match any of the additional / , so it should be / \ / [^ \ /] + $ / .

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