<el-radio-group v-model="checkedCities" v-for="(city) in cities" :key="city.id" @change="handleCheckedCitiesChange(city.id)" class="w_radio"> <el-radio :label="city.id" style="width:80px">{{ city.name }}</el-radio> </el-radio-group>
返回值 this.checkedCities，即选中的 :label="city.id"的值