UUID

1const regex = /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
2const str = '550e8400-e29b-41d4-a716-446655440000';
3
4// Test if string matches
5const isMatch = regex.test(str);
6console.log('Match found:', isMatch);
7
8// Find all matches (add 'g' flag for multiple matches)
9const matches = str.match(regex);
10console.log('Matches:', matches);
11
12// Find matches with details
13let match;
14const regexWithGlobal = /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/ig;
15while ((match = regexWithGlobal.exec(str)) !== null) {
16  console.log('Match:', match[0], 'Index:', match.index);
17}