How to extract a substring in js using a regular expression?

Question

JavaScript

Good afternoon.
There is a line:

"Organix (dry food) for small breed dogs, with chicken, Adult Dog Small Breed Chicken (12 kg)"

From it it is necessary to receive two lines.
First line.
The first line must meet the following conditions:

• The string is contained in brackets "(" and ")"
  
• The string contains numbers
  

At the output, we should get the following line:

"12 kg"

Second line.
The second line must meet the following condition:
It must not contain a parenthesized string (including parentheses) that contains numbers.
At the output, we should get the following line:

"Organix (dry food) for small breed dogs, with chicken, Adult Dog Small Breed Chicken"

Answer 1

function getStrings(str) {
  const str1 = str.match(/\(.+?\)/g)?.find(n => /\d/.test(n)) || '';
  return {
    str1: str1.slice(1, -1),
    str2: str.replace(str1, ''),
  };
}