jQuery AutoComplete ใครรู้วิธีบ้างครับ ตอนเลือกข้อมูล

    $("#ctl00_ContentPlaceHolder1_TxtDocNO").autocomplete(

    {   
        source: function (request, response) {
            $.ajax({
                url: "PageAEUser.aspx/Get_Doc_ById",
                data: "{'keyword':'" + request.term + "'}",
                dataType: "json",
                type: "POST",
                contentType: "application/json; charset=utf-8",
                success: function (data) {
                    response($.map(data.d, function (item) {
                        return {
                            
                            val:item.split('#')[0],
                            label:item.split('#')[1],
                            doc_no:item.split('#')[2],
                            doc_name:item.split('#')[3]
                            
                        }
                    }))
                },
                error: function (response) {
                    alert(response.responseText);
                },
                failure: function (response) {
                    alert(response.responseText);
                }
            });
        },
        select: function (e, i) {
            
            
            $("#ctl00_ContentPlaceHolder1_Hdn_doc_id").val(i.item.val);
            $("#ctl00_ContentPlaceHolder1_TxtDocNO").val(i.item.doc_no);
            $("#ctl00_ContentPlaceHolder1_TxtName").val(i.item.doc_name);
            

        },
        minLength: 4
    });

 select: function (e, i) {
            
            
            $("#ctl00_ContentPlaceHolder1_Hdn_doc_id").val(i.item.val);
            $("#ctl00_ContentPlaceHolder1_TxtDocNO").val(i.item.doc_no);
            $("#ctl00_ContentPlaceHolder1_TxtName").val(i.item.doc_name);
            

        },