$(document).ready(function () {
    var idProduct = 0;
    var idSize = 0;


  window.onload = function () {
            idProduct = getParammUrl("item");
            getAllSize(idProduct);
    };

function getAllSize(id) {
        $.ajax({
            type: "POST",
            url: "ServiceJson/WebServiceJson.asmx/getListSize",
            data: "{'idProduct':'" + idProduct + "'}",
            dataType: "json",
            contentType: "application/json; charset=utf-8",
            success: function (res) {
                $('#tableSize').empty();
                var item = res.d;

                var strAppend = "<tr>";
                strAppend += "<td style=\"width: 150px;\">Доступные размеры</td>";
                for (var i = 0; i < item.length; i++) {
                    strAppend += "<td id=\"" + idProduct + "_" + item[i]._idSizeProduct + "_borderSizeList\" >";
                    strAppend += "<div class=\"borderSizeList\">" + item[i]._nameSize + "</div>";
                    strAppend += "</td>";
                }
                strAppend += "</tr>";

                $("#tableSize").append(strAppend);

                $('.borderSizeList').on('click', function () {
                    getParammSize(this);
                });

            },
            error: function (xhr, status, error) {
                alert(error);
            }
        });
    }

 function getParammSize(ctrl) {

        var nameId = "_";
        var arrPos = ctrl.id.split(nameId);

        var idProduct = arrPos[0];
        var idSize = arrPos[1];

        $.ajax({
            type: "POST",
            url: "ServiceJson/WebServiceJson.asmx/getSizeSett",
            data: "{'idProduct':'" + idProduct + "', idSize:'" + idSize + "'}",
            dataType: "json",
            contentType: "application/json; charset=utf-8",
            success: function (res) {
                $('#tableParamm').empty();

                var item = res.d;

                for (var i = 0; i < item._listParamm.length; i++) {
                    $("#tableParamm").append("<tr><td style=\"width:200px;\">" + item._listParamm[i]._nameParamm + "</td><td style=\"width:200px;\">" + item._listParamm[i]._value + "</td></tr>");
                }
            },
            error: function (xhr, status, error) {
                alert(error);
            }
        });
    }

});

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>