多级表头

Grouping table head

<template>
  <el-table :data="playerLevelStatisticsList" stripe :span-method="objectSpanMethod" show-summary>
    <el-table-column prop="date" fixed label="日期" align="center" width="100"></el-table-column>
    <el-table-column prop="platform" fixed label="渠道" align="center" width="100"></el-table-column>
    <el-table-column v-for="(item, index) in levelList" :key="index" :label="item" align="center">
      <el-table-column label="在线数" min-width="70" align="center">
        <template #default="scope">
          {{ scope.row.list[index]?.onlineCount ?? 0 }}
        </template>
      </el-table-column>
      <el-table-column label="总人数" min-width="70" align="center">
        <template #default="scope">
          {{ scope.row.list[index]?.totalCount ?? 0}}
        </template>
      </el-table-column>
      <el-table-column label="占比" min-width="70" align="center">
        <template #default="scope">
          {{ scope.row.list[index]?.percent ?? 0}}
        </template>
      </el-table-column>
    </el-table-column>
  </el-table>
</template>

<script lang="ts" setup>
import type { TableColumnCtx } from 'element-plus'

interface User {
  id: string
  name: string
  amount1: string
  amount2: string
  amount3: number
}

interface SpanMethodProps {
  row: User
  column: TableColumnCtx<User>
  rowIndex: number
  columnIndex: number
}

const objectSpanMethod = ({
  row,
  column,
  rowIndex,
  columnIndex,
}: SpanMethodProps) => {
  if (columnIndex === 0) {
    if (rowIndex % 2 === 0) {
      return {
        rowspan: 2,
        colspan: 1,
      }
    } else {
      return {
        rowspan: 0,
        colspan: 0,
      }
    }
  }
}

const levelList = ["1", "2", "3", "4", "5", "7", "8", "12"];
const playerLevelStatisticsList = [
    {
        "date": "2024-03-20",
        "platform": "wx",
        "list": [
            {
                "onlineCount": 0,
                "level": 1,
                "totalCount": 9,
                "percent": "0%"
            },
            {
                "onlineCount": 0,
                "level": 2,
                "totalCount": 1,
                "percent": "0%"
            },
            {
                "onlineCount": 0,
                "level": 3,
                "totalCount": 1,
                "percent": "0%"
            },
            {
                "onlineCount": 0,
                "level": 4,
                "totalCount": 4,
                "percent": "0%"
            },
            {
                "onlineCount": 0,
                "level": 5,
                "totalCount": 1,
                "percent": "0%"
            },
            {
                "onlineCount": 0,
                "level": 7,
                "totalCount": 1,
                "percent": "0%"
            },
            {
                "onlineCount": 0,
                "level": 8,
                "totalCount": 1,
                "percent": "0%"
            },
            {
                "onlineCount": 0,
                "level": 12,
                "totalCount": 1,
                "percent": "0%"
            }
        ],
        "levelList": null
    },
    {
        "date": "2024-03-20",
        "level": null,
        "onlineCount": null,
        "allCount": null,
        "platform": "dy",
        "list": [
            {
                "onlineCount": 0,
                "level": 1,
                "totalCount": 4,
                "percent": "0%"
            },
            {
                "onlineCount": 0,
                "level": 3,
                "totalCount": 6,
                "percent": "0%"
            }
        ],
        "levelList": null
    },
    {
        "date": "2024-03-20",
        "level": null,
        "onlineCount": null,
        "allCount": null,
        "platform": "ttb",
        "list": [
            {
                "onlineCount": 1,
                "level": 1,
                "totalCount": 1,
                "percent": "100%"
            }
        ],
        "levelList": null
    },
    {
        "date": "2024-03-20",
        "level": null,
        "onlineCount": null,
        "allCount": null,
        "platform": "visit",
        "list": [
            {
                "onlineCount": 2,
                "level": 1,
                "totalCount": 2,
                "percent": "100%"
            }
        ],
        "levelList": null
    }
]

</script>