Jonathan Azuonye johadtech

johadtech / card_utils.dart

Created July 3, 2024 11:34 — forked from wilburx9/card_utils.dart

Validating card number with Luhn algorithm in dart/flutter

	static String validateCardNumWithLuhnAlgorithm(String input) {
	if (input.isEmpty) {
	return Strings.fieldReq;
	}

	input = getCleanedNumber(input);

	if (input.length < 8) { // No need to even proceed with the validation if it's less than 8 characters
	return Strings.numberIsInvalid;
	}