Javascript equivalent of Perl's \Q … \E or quotemeta()

Question

In Perl regular expressions, you can surround a subexpression with \\Q and \\E to indicate that you want that subexpression to be matched as a lite

Answer 1

Quotemeta isn't implemented natively as far as I know, but I've used this a few months ago for just this:

function quotemeta (str) {
  // http://kevin.vanzonneveld.net
  // +   original by: Paulo Freitas
  // *     example 1: quotemeta(". + * ? ^ ( $ )");
  // *     returns 1: '\. \+ \* \? \^ \( \$ \)'
  return (str + '').replace(/([\.\\\+\*\?\[\^\]\$\(\)])/g, '\\$1');
}

From http://phpjs.org/functions/quotemeta:496