4dkankan-components/docs/examples/table-v2/cross-hovering.vue

<template>
    <div style="height: 400px">
        <el-auto-resizer>
            <template #default="{ height, width }">
                <el-table-v2 :columns="columns" :cell-props="cellProps" :class="kls" :data="data" :width="width" :height="height" />
            </template>
        </el-auto-resizer>
    </div>
</template>

<script lang="ts" setup>
import { ref } from 'vue'

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)
columns.unshift({
    key: 'column-n-1',
    width: 50,
    title: 'Row No.',
    cellRenderer: ({ rowIndex }) => `${rowIndex + 1}`,
    align: 'center',
})
const data = generateData(columns, 200)

const cellProps = ({ columnIndex }) => {
    const key = `hovering-col-${columnIndex}`
    return {
        ['data-key']: key,
        onMouseenter: () => {
            kls.value = key
        },
        onMouseleave: () => {
            kls.value = ''
        },
    }
}

const kls = ref<string>('')
</script>

<style>
.hovering-col-0 [data-key='hovering-col-0'],
.hovering-col-1 [data-key='hovering-col-1'],
.hovering-col-2 [data-key='hovering-col-2'],
.hovering-col-3 [data-key='hovering-col-3'],
.hovering-col-4 [data-key='hovering-col-4'],
.hovering-col-5 [data-key='hovering-col-5'],
.hovering-col-6 [data-key='hovering-col-6'],
.hovering-col-7 [data-key='hovering-col-7'],
.hovering-col-8 [data-key='hovering-col-8'],
.hovering-col-9 [data-key='hovering-col-9'],
.hovering-col-10 [data-key='hovering-col-10'] {
    background: var(--el-table-row-hover-bg-color);
}

[data-key='hovering-col-0'] {
    font-weight: bold;
    user-select: none;
    pointer-events: none;
}
</style>