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Test, validate and match regular expressions
Test, validate and match regular expressions
This regular expression validates the basic structural format of an International Bank Account Number (IBAN). It ensures the string starts with exactly two uppercase letters for the country code, followed by 2 to 32 alphanumeric characters representing the check digits and Basic Bank Account Number (BBAN). This pattern is highly useful for preliminary client-side form validation in JavaScript to catch typos before server-side processing.