$('.creditCardText').keyup(function() {

var cardValue = $('.creditCardText').val(),
    cardLength = cardValue.length;

if ( cardLength < 5 ) {
    if ( cardLength % 4 == 0 ) {
        console.log('4 lük geldi');
        cardValue += "-";
        $('.creditCardText').val(cardValue);
    }
} else {
    if ( cardLength % 5 == 0 ) {
        console.log('5 lük geldi');
        cardValue += "-";
        $('.creditCardText').val(cardValue);

    }
}

});

$("#credit").mask("9999-9999-9999-9999");

$("#credit").mask("9999-9999-9999-99?99");

$('.creditCardText').keyup(function() {
  var foo = $(this).val().split("-").join(""); // remove hyphens
  if (foo.length > 0) {
    foo = foo.match(new RegExp('.{1,4}', 'g')).join("-");
  }
  $(this).val(foo);
});

document.querySelector('.creditCardText').addEventListener('input', function (e) {
    var foo = this.value.split("-").join("");
    if (foo.length > 0) {
        foo = foo.match(new RegExp('.{1,4}', 'g')).join("-");
    }
    this.value = foo;
});

input_credit_card = function(input)
{
    var format_and_pos = function(char, backspace)
    {
        var start = 0;
        var end = 0;
        var pos = 0;
        var separator = "-";
        var value = input.value;

        if (char !== false)
        {
            start = input.selectionStart;
            end = input.selectionEnd;

            if (backspace && start > 0) // handle backspace onkeydown
            {
                start--;

                if (value[start] == separator)
                { start--; }
            }
            // To be able to replace the selection if there is one
            value = value.substring(0, start) + char + value.substring(end);

            pos = start + char.length; // caret position
        }

        var d = 0; // digit count
        var dd = 0; // total
        var gi = 0; // group index
        var newV = "";
        var groups = /^D*3[47]/.test(value) ? // check for American Express
        [4, 6, 5] : [4, 4, 4, 4];

        for (var i = 0; i < value.length; i++)
        {
            if (/D/.test(value[i]))
            {
                if (start > i)
                { pos--; }
            }
            else
            {
                if (d === groups[gi])
                {
                    newV += separator;
                    d = 0;
                    gi++;

                    if (start >= i)
                    { pos++; }
                }
                newV += value[i];
                d++;
                dd++;
            }
            if (d === groups[gi] && groups.length === gi + 1) // max length
            { break; }
        }
        input.value = newV;

        if (char !== false)
        { input.setSelectionRange(pos, pos); }
    };

    input.addEventListener('keypress', function(e)
    {
        var code = e.charCode || e.keyCode || e.which;

        // Check for tab and arrow keys (needed in Firefox)
        if (code !== 9 && (code < 37 || code > 40) &&
        // and CTRL+C / CTRL+V
        !(e.ctrlKey && (code === 99 || code === 118)))
        {
            e.preventDefault();

            var char = String.fromCharCode(code);

            // if the character is non-digit
            // OR
            // if the value already contains 15/16 digits and there is no selection
            // -> return false (the character is not inserted)

            if (/D/.test(char) || (this.selectionStart === this.selectionEnd &&
            this.value.replace(/D/g, '').length >=
            (/^D*3[47]/.test(this.value) ? 15 : 16))) // 15 digits if Amex
            {
                return false;
            }
            format_and_pos(char);
        }
    });

    // backspace doesn't fire the keypress event
    input.addEventListener('keydown', function(e)
    {
        if (e.keyCode === 8 || e.keyCode === 46) // backspace or delete
        {
            e.preventDefault();
            format_and_pos('', this.selectionStart === this.selectionEnd);
        }
    });

    input.addEventListener('paste', function()
    {
        // A timeout is needed to get the new value pasted
        setTimeout(function(){ format_and_pos(''); }, 50);
    });

    input.addEventListener('blur', function()
    {
        // reformat onblur just in case (optional)
        format_and_pos(this, false);
    });
};

input_credit_card(document.getElementById('credit-card'));

$('.creditCardText').keyup(function() {

  var ss, se, obj;
  obj = $(this);
  ss = obj[0].selectionStart;
  se = obj[0].selectionEnd;

  var curr = obj.val();

  var foo = $(this).val().split("-").join(""); // remove hyphens
  if (foo.length > 0) {
    foo = foo.match(new RegExp('.{1,4}', 'g')).join("-");
  }

  if(( (curr.length % 5 == 0) && ss == se && ss == curr.length ) || (ss == se && (ss % 5 == 0))){
      ss += 1;
      se += 1;
  }

  if (curr != foo){
    $(this).val(foo);
    obj[0].selectionStart = ss;
    obj[0].selectionEnd = se;
  }

});

//Html
    /* <input type="text" class="creditCardText" maxlength="19" /> */
    $('.creditCardText').keyup(function () {
      var cctlength = $(this).val().length; // get character length

      switch (cctlength) {
      case 4:
        var cctVal = $(this).val();
        var cctNewVal = cctVal + '-';
        $(this).val(cctNewVal);
        break;
      case 9:
        var cctVal = $(this).val();
        var cctNewVal = cctVal + '-';
        $(this).val(cctNewVal);
        break;
      case 14:
        var cctVal = $(this).val();
        var cctNewVal = cctVal + '-';
        $(this).val(cctNewVal);
        break;
      default:
        break;
     }
  });