element-plus/docs/examples/table-v2/colspan.vue

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<template>
<table-v2 fixed :columns="columns" :data="data" :width="700" :height="400">
<template #row="props">
<Row v-bind="props" />
</template>
</table-v2>
</template>
<script lang="ts" setup>
import { cloneVNode } from 'vue'
import TableV2 from '@element-plus/components/table-v2/src/table-v2'
const generateColumns = (length = 10, prefix = 'column-', props?: any) =>
Array.from({ length }).map((_, columnIndex) => ({
...props,
key: `${prefix}${columnIndex}`,
dataKey: `${prefix}${columnIndex}`,
title: `Column ${columnIndex}`,
width: 150,
}))
const generateData = (
columns: ReturnType<typeof generateColumns>,
length = 200,
prefix = 'row-'
) =>
Array.from({ length }).map((_, rowIndex) => {
return columns.reduce(
(rowData, column, columnIndex) => {
rowData[column.dataKey] = `Row ${rowIndex} - Col ${columnIndex}`
return rowData
},
{
id: `${prefix}${rowIndex}`,
parentId: null,
}
)
})
const columns = generateColumns(10)
const data = generateData(columns, 200)
const colSpanIndex = 1
columns[colSpanIndex].colSpan = ({ rowIndex }) => (rowIndex % 4) + 1
columns[colSpanIndex].align = 'center'
const Row = ({ rowData, rowIndex, cells, columns }) => {
const colSpan = columns[colSpanIndex].colSpan({ rowData, rowIndex })
if (colSpan > 1) {
let width = Number.parseInt(cells[colSpanIndex].props.style.width)
for (let i = 1; i < colSpan; i++) {
width += Number.parseInt(cells[colSpanIndex + i].props.style.width)
cells[colSpanIndex + i] = null
}
const style = {
...cells[colSpanIndex].props.style,
width: `${width}px`,
backgroundColor: 'var(--el-color-primary-light-3)',
}
cells[colSpanIndex] = cloneVNode(cells[colSpanIndex], { style })
}
return cells
}
</script>