How to properly escape characters in regexp

Question

I want to do a string search inside a string. Simply saying MySTR.search(Needle).

The problem occurs when this needle string contains speci

Answer 1

Duplicate of https://stackoverflow.com/a/6969486/151312

This is proper as per MDN (see explanation in post above):

function escapeRegExp(str) {
  return str.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&");
}