1、循环列数据源，动态生成列

<template><div><el-table ref="table" :data="pageData.tableData" stripe style="width: 100%"><el-table-column v-for="column in pageData.columns" :key="column.prop" :prop="column.prop" :label="column.label":min-width="column.minWidth"></el-table-column></el-table></div>
</template><script setup lang="ts">
import {reactive} from 'vue';const pageData = reactive({columns: [{prop: 'source',label: '来源',minWidth: '100px'},{prop: 'target',label: '目标',minWidth: '100px'},{prop: 'value1',label: 'value1（万）',minWidth: '150px'},{prop: 'value2',label: 'value2（亿）',minWidth: '150px'},],tableData: [{source: '北京',target: '上海',value1: '189',value2: '1.89'}, {source: '天津',target: '河北',value1: '233',value2: '2.33'}, {source: '上海',target: '陕西',value1: '97',value2: '0.97'}, {source: '内蒙古',target: '山东',value1: '180',value2: '1.80'}]
});</script>

2、对某一列用slot的方式拓展，把这一列拓展成多列

<template><div><el-table :data="tableData"><el-table-column label="来源" prop="source"></el-table-column><el-table-column label="目标" prop="target"></el-table-column><el-table-column v-for="(item, index) in tableData[0].zbList" :key="index"><template #header>{{ item.zb }}</template><template v-slot="{ row }">{{ row.zbList[index].value }}</template></el-table-column></el-table></div>
</template><script lang="ts" setup>
import {ref} from 'vue';const tableData = ref([{source: '北京',target: '上海',zbList: [{zb: '指标一',value: '2000'},{zb: '指标二',value: '4000'},{zb: '指标三',value: '6000'},]
},{source: '北京',target: '天津',zbList: [{zb: '指标一',value: '20'},{zb: '指标二',value: '40'},{zb: '指标三',value: '60'},]},
]);
</script>

3、二维表格

<template><el-table :data="data.tableData" style="width: 100%"><el-table-column prop="color" label="颜色\尺码" width="180"></el-table-column><el-table-column v-for="(i, index) in data.sizes" :label="i" align="center" header-align="center" :key="index"><template v-slot="scope">{{ scope.row[i] }}</template></el-table-column></el-table>
</template>
<script setup lang="ts">
import {reactive} from 'vue';const data = reactive({sizes: ["x", "xl"],tableData: [{color: "red",xl: 10,x: 0},{color: "blue",xl: 10,x: 0},{color: "black",xl: 10,x: 5}],
});</script>

参考： Element-plus的el-table动态列表格_elementplus 带状态表格-CSDN博客

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