优化授权课页面

web/src/main/resources/static/js/jlw/teachingManagement/add.js

@@ -202,10 +202,13 @@ layui.define(['form', 'laydate', 'table', 'teachingManagementApi', 'table', 'xmS
         Lib.getClassByUniSys($("select[name='schoolClassInfo']"),obj.value);
         universityFacultyId = $("#addForm select[name='universityFacultyInfo']").val();
         //教师
-        var universitySystemList = Common.getAjax('/jlw/teacher/getValues.json', {
-            universitySystemId: obj.value,
-            universityFacultyId: universityFacultyId
-        }).data;
+        var universitySystemList = []
+        if (!$.isEmpty(obj.value)){
+            universitySystemList = Common.getAjax('/jlw/teacher/getValues.json', {
+                universitySystemId: obj.value,
+                universityFacultyId: universityFacultyId
+            }).data;
+        }
         var htm = '<option value="">请选择</option>';//universitySystemInfo
         for (var i = 0;i < universitySystemList.length;i++){
             htm += '<option value="'+universitySystemList[i].teacherId+'">'+universitySystemList[i].teacherName+'</option>';