how run order script in javascript

var rows = document.getElementById("<%= grdSnd.ClientID %>").rows;
for (var i = 1; i < rows.length; i++) {
hesCode = rows[i].cells[0].getElementsByTagName("input")[0].value + rows[i].cells[1].getElementsByTagName("input")[0].value + rows[i].cells[2].getElementsByTagName("input")[0].value
 IsValidHesNo(hesCode, function (res) {
alert(res);
});
}
function IsValidHesNo(hesCode, callBack) {
       $.ajax({
           type: "post",
           contentType: "application/json; charset=utf-8",
           data: "{'hesCode':'" + hesCode + "'}",
           url: "insertSanad.aspx/IsValidHesNo",
           dataType: "json",
           success: function (response) {
               callBack(response.d);
           },
           Error: function () {
               callBack("");
           }
       });
   }