Regex Tester & Validator
Test, validate and match regular expressions
Test, validate and match regular expressions
Validates a Chinese 18-digit Resident Identity Card number. It matches a 6-digit region code, a 4-digit birth year, a valid month (01-12), a valid day (01-31), a 3-digit sequence number, and a final checksum character (0-9 or X). Commonly used in Chinese applications for identity verification and form validation.