iview 下拉框禁用样式

 <Cascader
              clearable
              filterable
              :filterable="false"
              :disabled="isSee"
              v-model="formData.cascaderCityAreaList"
              placeholder="请选择省/市/区"
              :data="cityAreaList"
              :load-data="loadCityAreaLevelList"
            ></Cascader>