vue基于element-ui select下拉框获取value和label的值

<el-form-item label="物流公司：" prop="courierCompany">
              	<el-select v-model="courierCompany" @change="onSelectedDrug($event)" maxlength=12 filterable placeholder="请选择">
                  	<el-option v-for="item in expressList"
				      :key="item.abbreviation"//一定要与value的值相同
				      :label="item.express"
				      :value="item.abbreviation">
				</el-option>
			</el-select>

onSelectedDrug(id){
				let obj = {};
			      obj = this.expressList.find((item)=>{//这里的userList就是上面遍历的数据源
			        return item.abbreviation === id;//筛选出匹配数据
			      });
			        console.log(obj.express);//获取的 name
			      console.log(id);//获取的 id
			},