cardNumberValidate method

bool cardNumberValidate({
  1. required String content,
  2. int? length,
})

This Method will validate your content from ATM/Credit Card Number Format. content Content is a Required parameter. Pass your inputed or that value which you want to compare with ATM/Credit Card Number Format. length Length of card number.

Implementation

bool cardNumberValidate({required String content, int? length}) {
    if (content.length != length) {
      return false;
    } else {
      return RegExp(r"^[0-9][16]").hasMatch(content);
    }
  }