elementUI el-select怎么获取多个属性值

<el-select v-model="Performance" placeholder="请选择" @change="handleChange"><!--value-key="ddeta"-->

            <el-option

              v-for="item in dataArr"

              :key="item.month"

              :label="item.allDay"

              :value="{value:item.allDay,label:item.ddeta}"                 ※※※※※※※※※※※※※※※※※※※※

            ></el-option>

          </el-select>

 

handleChange(params){

       const { value, label } = params;

      console.log( value, label );

    },