IBAN verification code

Resolved

(@pexel)

hello I am trying to write an IBAN validation form. The code below is working correctly.

The problem is to delete spaces defined in fieldname27. For some reason the js function does not work.. but it works in html.

    function validateIBAN() {
      var iban = document.getElementById("fieldname27").value.replace(/[^a-zA-Z0-9]/g, '').toUpperCase();

      var ibanPattern = /^[A-Z]{2}\d{2}[A-Z0-9]{4}[0-9]{7}([A-Z0-9]?){0,16}$/;

      if (ibanPattern.test(iban)) {
        var countryCode = iban.substring(0, 2);
        var checkDigits = iban.substring(2, 4);
        var bban = iban.substring(4);
        var numericIBAN = bban + countryCode + checkDigits;

        var numericValue = "";
        for (var i = 0; i < numericIBAN.length; i++) {
          var charValue = numericIBAN[i].toUpperCase().charCodeAt(0) - 55;
          if (charValue >= 10 && charValue <= 35) {
            numericValue += charValue;
          } else {
            numericValue += numericIBAN[i];
          }
        }

        var mod97 = BigInt(numericValue) % 97n;

        if (mod97 === 1n) {
          document.getElementById("result").innerHTML = "IBAN geçerli.";
        } else {
          document.getElementById("result").innerHTML = "IBAN geçerli değil.";
        }
      } else {
        document.getElementById("result").innerHTML = "Geçerli bir IBAN girin.";
      }
    }

But after I check the result, I want to print it like this.

    jQuery('#calculation-result').html(result);
    jQuery('.kriter1-aciklama').html('Sonuç :');
    jQuery('.kriter1-sonuc').html(result);

I wonder how can I run this query correctly?
Thanks

Viewing 4 replies - 1 through 4 (of 4 total)

Plugin Author

codepeople

(@codepeople)

2 years, 11 months ago

Hello @pexel

If you entered the code as part of an equation, the line of code:

var iban = document.getElementById("fieldname27").value.replace(/[^a-zA-Z0-9]/g, '').toUpperCase();

Need to be edited as follows

var iban = String(fieldname27|r).replace(/[^a-zA-Z0-9]/g, '').toUpperCase();

If the code was entered as an auxiliary operation via “HTML Content” field:

var iban = String(getField("fieldname27").val(true, true)).replace(/[^a-zA-Z0-9]/g, '').toUpperCase();

If you need a custom coding service to implement a IBAN validator on your form, do not hesitate to contact us via plugin website:

https://cff.dwbooster.com/contact-us

Best regards.

Thread Starter

pexel

(@pexel)

2 years, 11 months ago

This way the code structure works but fieldname27; If I define it like this, it writes the result. It doesn’t delete the spaces in between. I tried as you gave. Not working.

For example: TR80 0006 2000 0670 0006 6844 77 iban is valid but it says invalid. Actually my method is correct but the problem persists because of fieldname27 field.

(function() {
  var iban = fieldname27;

  var ibanPattern = /^[A-Z]{2}\d{2}[A-Z0-9]{4}[0-9]{7}([A-Z0-9]?){0,16}$/;

  if (ibanPattern.test(iban)) {
    var numericIBAN = iban.substring(4) + iban.substring(0, 4);
    var numericIBANBigInt = BigInt(numericIBAN);

    var modValue = numericIBANBigInt % 97n;
    var isValid = modValue === 1n || (modValue === 0n && iban.substring(2, 4) === '00');
    var ibanStatus = isValid ? 'Geçerli' : 'Geçersiz';

    jQuery('#calculation-iban').html(iban);
    jQuery('.kriter1-aciklama').html('IBAN:');
    jQuery('.kriter1-sonuc').html(ibanStatus);

    return [ibanStatus];
  } else {
    var ibanStatus = 'Geçersiz IBAN';
    jQuery('#calculation-iban').html(iban);
    jQuery('.kriter1-aciklama').html('IBAN:');
    jQuery('.kriter1-sonuc').html(ibanStatus);

    return [ibanStatus];
  }
})();

this is the full working code (I couldn’t adapt)

  function validateIBAN() {
      var iban = document.getElementById("fieldname27").value.replace(/[^a-zA-Z0-9]/g, '').toUpperCase();

      var ibanPattern = /^[A-Z]{2}\d{2}[A-Z0-9]{4}[0-9]{7}([A-Z0-9]?){0,16}$/;

      if (ibanPattern.test(iban)) {
        var countryCode = iban.substring(0, 2);
        var checkDigits = iban.substring(2, 4);
        var bban = iban.substring(4);
        var numericIBAN = bban + countryCode + checkDigits;

        var numericValue = "";
        for (var i = 0; i < numericIBAN.length; i++) {
          var charValue = numericIBAN[i].toUpperCase().charCodeAt(0) - 55;
          if (charValue >= 10 && charValue <= 35) {
            numericValue += charValue;
          } else {
            numericValue += numericIBAN[i];
          }
        }

        var mod97 = BigInt(numericValue) % 97n;

        if (mod97 === 1n) {
          document.getElementById("result").innerHTML = "IBAN geçerli.";
        } else {
          document.getElementById("result").innerHTML = "IBAN geçerli değil.";
        }
      } else {
        document.getElementById("result").innerHTML = "Geçerli bir IBAN girin.";
      }
    }