[Solved] Get only numbers after a certain character (#) with regex [closed]

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To match numbers preceded by # use (?<=#)\d+ (positive lookbehind
for #, then a non-empty sequence of digits).

To match numbers not preceded by # use (?<!\d|#)\d+ (negative lookbehind).
This time however the “forbidden” preceding char is either a # or a digit.

Of course, use both patterns with g (global) option.

If you want to process all numbers is a single loop and within this
loop detect, whether the number has a preceding #, you can use another
option, namely (#?)(\d+).

This pattern contains 2 groups:

  • optional # and
  • a sequence of digits.

Then, processing each match, read the number from group 2 and check group 1,
whether it contains the #.

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solved Get only numbers after a certain character (#) with regex [closed]