<el-table>
         <!--每页从1开始的序号-->
        <el-table-column label="序号" width="60" align="center" type="index" />
         <!--一直递增的序号 vue2写法-->
	    <el-table-column label="序号" width="60" align="center">
          <template scope="scope">
            <span>{{(queryParams.pageNum - 1) * queryParams.pageSize + scope.$index + 1}}</span>
          </template>
        </el-table-column>
         <!--一直递增的序号 vue3写法-->
        <el-table-column label="序号" width="60" align="center">
          <template #default="{ row, $index }">
            <span>{{ (queryParams.pageNum - 1) * queryParams.pageSize + $index + 1 }}</span>
          </template>
        </el-table-column>
      </el-table>