<script>
        /* you may avoid using this script by using equavilant JQuery version $.getJSON(url) */
        var getJSON = function (url, callback) {
            var xhr = new XMLHttpRequest();
            xhr.open('GET', url, true);
            xhr.responseType = 'json';
            xhr.onload = function () {
                var status = xhr.status;
                if (status === 200) {
                    callback(null, xhr.response);
                } else {
                    callback(status, xhr.response);
                }
            };
            xhr.send();
        };

        function SetNumSystem(inputControlId, culture) {
            // file from cldr-core
            // see: https://github.com/unicode-cldr/cldr-core/blob/master/supplemental/numberingSystems.json
            getJSON('https://raw.githubusercontent.com/unicode-cldr/cldr-core/master/supplemental/numberingSystems.json',
                function (err, data) {
                    if (err !== null) {
                        alert('Something went wrong: ' + err);
                    } else {
                        var inputControl = document.getElementById(inputControlId);

                        inputControl.addEventListener("keydown", function (event) {
                            if (event.key >= 0 && event.key <= 9) {
                                var numbersList = data.supplemental.numberingSystems[culture]._digits;
                                event.preventDefault();
                                var s = inputControl.value;
                                var i = inputControl.selectionStart;
                                s = s.substr(0, i) + numbersList[event.key] + s.substr(inputControl.selectionEnd);
                                inputControl.value = s;
                                inputControl.selectionStart = inputControl.selectionEnd = i + 1;
                                return false;
                            }
                        }, false);
                    }
                });
        }
    </script>