text: const ibanDemo = function() {
  
    function couldBeIBAN(str) {
  
        return str && countries.isValidISOCode(str.substring(0,2));
    }
  
    return {
      couldBeIBAN: couldBeIBAN,
      couldBeBBAN: function couldBeBBAN(str) {
  
          return str && !couldBeIBAN(str);
      }
  
    }
  }();
  
  $(document).ready(function(){
  
    function onIBAN(str) {
        let html;
        if (IBAN.isValid(str)) {
          const bban = IBAN.toBBAN(str, ' ');
          html = '<h3>This IBAN is VALID! <small>BBAN is ' + bban + '</small></h3>';
        } else {
          html = '<h3>This IBAN is INVALID!';
        }
        $('#results').html(html);
        $('#results').show();
    }
  
    function onBBAN(str) {
        let html;
        const country = $('#country').val();
        if (IBAN.isValidBBAN(country, str)) {
          const iban = IBAN.fromBBAN(country, str);
          html = '<h3>This BBAN is VALID! <small>IBAN is ' + iban + '</small></h3>';
        } else {
          html = '<h3>This BBAN is INVALID!';
        }
        $('#results').html(html);
        $('#results').show();
    }
  
    $('#userInput').bind('keyup', onChange);
    $('#userInput').bind('change', onChange);
  
    $('#results').hide();
    $('#country').hide();
    $('#countryLb').hide();
    $('#userInput').focus();
  
    function onChange() {
      const val = $('#userInput').val();
      if (ibanDemo.couldBeIBAN(val)) {
        $('#country').hide();
        $('#countryLb').hide();
      }
  
      if (ibanDemo.couldBeBBAN(val)) {
        $('#country').show();
        $('#countryLb').show();
      }
    }
  
    $('#goBtn').click(function() {
        $('#results').hide();
  
        const val = $('#userInput').val();
        if (ibanDemo.couldBeIBAN(val)) {
          onIBAN(val);
        }
  
        if (ibanDemo.couldBeBBAN(val)) {
          onBBAN(val);
        }
  
  
    });
  });
  