remove / replace unwanted prefixed info from `class` name

Question

I am getting style from backend. it has unwanted prefix with it. i would replace the same without the prefix. what would be the correct way?

here is what wh

Answer 1

It seems the prefix is hexadecimal, so this will do the job:

str.replace(/^[A-F0-9]+\s+/gm, '')

Answer 2

Here's a solution :

$('style').html(function(_,h){
  return h.replace(/^\w+ (\.\w+)/gm,'$1');
});

This removes any string at the start of a line and before a class selector in any <style> element.

Demonstration