Panagiotis Panagiotis - 1 month ago 6x
Javascript Question

JavaScript: Extract part of string between two optional characters with Regex

I'm working on a regex in javascript for capturing part of the string between two optional characters.

Optional characters are: '=' and '||'


  • LENGTH=A simple message||5

  • LENGTH=A simple message

  • LENGTH||5

For getting the value after '||' I manage that with the split() function.

For getting the 'A simple message' part I manage to extract the string with the regex
when both '=' and '||' are in the string.

Any suggestions for extracting the string with one regex when one of the two optional characters is there?

I tried also
but is not working.


You can use this negative lookahead based regex to capture value from = and optional ||:


RegEx Demo