$("#version").on("change", function () { $.ajax({ type: "post", url: "/emit/iidxGetProfile", data: { refid: refid, version: this.value, }, dataType: "text", success: function (result) { let data = JSON.parse(result); if (data["pcdata"] == null) { alert("Theres no profile data available on this version!"); return; } let sp_grade = data["pcdata"].sgid; let dp_grade = data["pcdata"].dgid; if (sp_grade == -1) sp_grade = "----"; if (dp_grade == -1) dp_grade = "----"; $("#sp_grade").text(sp_grade); $("#dp_grade").text(dp_grade); }, error: function () { alert("Unable to process data"); } }); });