Regex to find the pattern and keep the middle part in Javascript

\s↳\s(.+)\s-\s([\$\xA2-\xA5\u058F\u060B\u09F2\u09F3\u09FB\u0AF1\u0BF9\u0E3F\u17DB\u20A0-\u20BD\uA838\uFDFC\uFE69\uFF04\uFFE0\uFFE1\uFFE5\uFFE6]\d+\.\d{2}) should work. The long, horrible part in the middle is to find the currency symbol, taken from this answer.

Piece by piece:

• \s matches a whitespace character
• ↳ matches that character exactly
• \s matches a whitespace character
• (.*) is your first capture group, and catches everything until the next part of the Regex is matched. .* means any character, any number of times.
• \s-\s matches a whitespace followed by a dash and another whitespace
• ([\$\xA2-\xA5\u058F\u060B\u09F2\u09F3\u09FB\u0AF1\u0BF9\u0E3F\u17DB\u20A0-\u20BD\uA838\uFDFC\uFE69\uFF04\uFFE0\uFFE1\uFFE5\uFFE6]\d+\.\d{2}) catches the currency and digits:
  • [\$\xA2-\xA5\u058F\u060B\u09F2\u09F3\u09FB\u0AF1\u0BF9\u0E3F\u17DB\u20A0-\u20BD\uA838\uFDFC\uFE69\uFF04\uFFE0\uFFE1\uFFE5\uFFE6] matches a currency character
  • \d+\.\d{2} matches one or more digit, followed by a full stop and two more digits

In context:

let regex = /\s↳\s(.+)\s-\s([\$\xA2-\xA5\u058F\u060B\u09F2\u09F3\u09FB\u0AF1\u0BF9\u0E3F\u17DB\u20A0-\u20BD\uA838\uFDFC\uFE69\uFF04\uFFE0\uFFE1\uFFE5\uFFE6]\d+\.\d{2})/;

let testText = " ↳ Add milk - £0.25";
let matches = regex.exec(testText);

console.log("Test text = \"" + matches[0] + "\"");
console.log(matches[1]);
console.log(matches[2]);

If you only want to match on a couple of currencies, say £ or $, you will make your life much easier and the regex will look much less ugly.