el-date-picker 开始结束时间传给后端以及后端回传显示

<el-date-picker`在这里插入代码片`
            v-model="value2"
            type="daterange"
            range-separator="至"
            start-placeholder="开始时间"
            end-placeholder="结束时间"
            :size="size"
          />

"noticeStartDate":value2.value[0],
"noticeEndDate":value2.value[1],

value2.value=[new Date(.noticeStartDate),new Date(noticeEndDate)];