Regex Editor & Tester

This regex validates dates in European/German format (DD.MM.YYYY) during progressive input. It supports partial input validation, checking day ranges (1-31), month ranges (1-12), and optional years (1-4 digits). It accounts for month-specific day limits: 31 days for months 1,3,5,7,8,10,12 and 30 days for all except February.