alertInputNumberValidation static method

String? alertInputNumberValidation({
  1. @required String? number,
})

Implementation

static String? alertInputNumberValidation({@required String? number}) {
  final RegExp regExp = RegExp(validNumberPattern.toString());
  if (number!.isEmpty) {
    return ValidatorStringConstants.empty_value_message;
  }
  if (!regExp.hasMatch(number)) {
    return ValidatorStringConstants.invalid_value_msg;
  }
  return null;
}