修改

pages/my/myStudy/myStudy.js

@@ -580,8 +580,8 @@ Page({
       multiIndex: _this.data.multiIndex,
       ["allData.province"]: CityArray0[_this.data.multiIndex[0]].id,
       ["allData.region"]: CityArray1[_this.data.multiIndex[1]].id,
-      college: '',
-      sname: '',
+      college: null,
+      sname: null,
     });
     // _this.loadSchool(_this.data.allData.region)
     _this.getSchool(_this.data.allData.region);