Scroll dropdown list

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C#

ASP.NET

Javascript

jQuery

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I made a autocomplete search with dropdown list, but the scroll did not work, and the list is crashed with the keyboard on the tablet

What I have tried:

I use this code for search and show the list

function ListPlayer(ScnFK, list) {
    var selectName = null;
    tempName = [];
    $("#" + list + "").autocomplete({
        source: arr,
        minLength: 1,
        hint: true,
        highlight: true,
        scroll: true,
        autofocus: true,
        search: function (oEvent, oUi) {
            var sValue = $(oEvent.target).val();
            var aSearch = [];
            $(arr).each(function (index, element) {
                var str = $(element).attr("value");
                str = str.toUpperCase();
                if (str.substr(0, sValue.length) == sValue.toUpperCase()) {
                    for (var j = 0; j < lists.length; j++) {
                        selectName = $("#" + lists[j]).attr("value");
                        tempName.push(selectName.toUpperCase());
                    }
                    if (~tempName.indexOf(str.toUpperCase()) > -1) {
                        aSearch.push(element);
                    }
                }
            });
            $(this).autocomplete("option", "source", aSearch);
        },
        open: function (oEvent, oUi) {
            $('.ui-autocomplete').off('menufocus hover mouseover mouseenter');
        }
    });
    if (~lists.indexOf(list) > -1) {
        lists.push(list);
    }
}