How to assign value to ckeditor using jQuery in ASP.Net

hi

I use below code to show number in textboxs in persian language:

  <script type="text/javascript">
        function pageLoad() {
            $('[id*=Txtmob]').keyup(function (e) {
                var ctrlKey = 67, vKey = 86;
                if (e.keyCode != ctrlKey && e.keyCode != vKey) {
                    $('[id*=Txtmob]').val(toPersianNumber($(this).val()));
                }
            });

            $('[id*=Txtsabet]').keyup(function (e) {
                var ctrlKey = 67, vKey = 86;
                if (e.keyCode != ctrlKey && e.keyCode != vKey) {
                    $('[id*=Txtsabet]').val(toPersianNumber($(this).val()));
                }
            });
            $('[id*=Txtadd]').keyup(function (e) {
                var ctrlKey = 67, vKey = 86;
                if (e.keyCode != ctrlKey && e.keyCode != vKey) {
                    $('[id*=Txtadd]').val(toPersianNumber($(this).val()));
                }
            });
            $('[id*=CKeditor]').keyup(function (e) {
                var ctrlKey = 67, vKey = 86;
                if (e.keyCode != ctrlKey && e.keyCode != vKey) {
                    $('[id*=CKeditor]').val(toPersianNumber($(this).val()));
                }
            });

 
 
            function toPersianNumber(input) {
                var inputstring = input;
                var persian = ["۰", "۱", "۲", "۳", "۴", "۵", "۶", "۷", "۸", "۹"]
                for (var j = 0; j < persian.length; j++) {
                    inputstring = inputstring.toString().replace(new RegExp(j, "g"), persian[j]);
                }
                return inputstring;
            }
        }
    </script>

in below code I define for ckeditor too:

 $('[id*=CKeditor]').keyup(function (e) {
                var ctrlKey = 67, vKey = 86;
                if (e.keyCode != ctrlKey && e.keyCode != vKey) {
                    $('[id*=CKeditor]').val(toPersianNumber($(this).val()));
                }
            });

but it doesn't work for ckeditor

how I can use it for ckeditor?

best regards

neda