// a regular expression with two non-capturing groups

// and one capturing group

const regex = /(?:Jane|John|Alison)\s(.*?)\s(?:Smith|Smuth)/;

const result = regex.exec('Jane Isabell Smith');

console.log(result[0]); // 'Jane Isabell Smith'

console.log(result[1]); // 'Isabell'

​

const notMatchingResult = regex.exec('nope');

console.log(notMatchingResult); // null