element-plus table组件 封装列隐藏功能，并非 v-if 或 v-for，通过tableRef 与样式控制

封装 Element Plus Table 列隐藏功能

使用 tableRef 和样式控制实现列隐藏

通过操作表格的 DOM 结构和样式，可以实现列的动态隐藏与显示。这种方法不依赖 v-if 或 v-for，而是直接控制列的可见性。

<template>
<el-table ref="tableRef" :data="tableData">
<el-table-column prop="date" label="日期" />
<el-table-column prop="name" label="姓名" />
<el-table-column prop="address" label="地址" />
</el-table>
<el-button @click="toggleColumn('name')">切换姓名列</el-button>
</template>

<script setup>
import { ref } from 'vue';

const tableRef = ref();
const tableData = [
{ date: '2023-01-01', name: '张三', address: '北京' },
{ date: '2023-01-02', name: '李四', address: '上海' }
];

const toggleColumn = (prop) => {
if (!tableRef.value) return;

const table = tableRef.value.$el;
const header = table.querySelector('.el-table__header-wrapper');
const body = table.querySelector('.el-table__body-wrapper');

// 获取所有列
const headerCols = header.querySelectorAll('th');
const bodyCols = body.querySelectorAll('tr td');

// 查找目标列索引
let colIndex = -1;
headerCols.forEach((th, index) => {
if (th.getAttribute('data-property') === prop) {
colIndex = index;
}
});

if (colIndex === -1) return;

// 切换列的显示状态
headerCols[colIndex].style.display =
headerCols[colIndex].style.display === 'none' ? '' : 'none';

bodyCols.forEach((td, index) => {
if (index % headerCols.length === colIndex) {
td.style.display =
td.style.display === 'none' ? '' : 'none';
}
});
};
</script>

封装为可复用的 Hook

可以将列隐藏逻辑封装为可复用的 Composition API Hook：

// useTableColumnToggle.js
import { ref } from 'vue';

export function useTableColumnToggle(tableRef) {
const toggleColumn = (prop) => {
if (!tableRef.value) return;

const table = tableRef.value.$el;
const header = table.querySelector('.el-table__header-wrapper');
const body = table.querySelector('.el-table__body-wrapper');

const headerCols = header.querySelectorAll('th');
const bodyCols = body.querySelectorAll('tr td');

let colIndex = -1;
headerCols.forEach((th, index) => {
if (th.getAttribute('data-property') === prop) {
colIndex = index;
}
});

if (colIndex === -1) return;

const isHidden = headerCols[colIndex].style.display === 'none';
const newDisplay = isHidden ? '' : 'none';

headerCols[colIndex].style.display = newDisplay;
bodyCols.forEach((td, index) => {
if (index % headerCols.length === colIndex) {
td.style.display = newDisplay;
}
});
};

return { toggleColumn };
}

使用 Hook 的示例

<template>
<el-table ref="tableRef" :data="tableData">
<el-table-column prop="date" label="日期" />
<el-table-column prop="name" label="姓名" />
<el-table-column prop="address" label="地址" />
</el-table>
<el-button @click="toggleNameColumn">切换姓名列</el-button>
</template>

<script setup>
import { ref } from 'vue';
import { useTableColumnToggle } from './useTableColumnToggle';

const tableRef = ref();
const tableData = [
{ date: '2023-01-01', name: '张三', address: '北京' },
{ date: '2023-01-02', name: '李四', address: '上海' }
];

const { toggleColumn } = useTableColumnToggle(tableRef);
const toggleNameColumn = () => toggleColumn('name');
</script>

注意事项

扩展功能

可以进一步扩展 Hook 以支持批量操作：

// 在 useTableColumnToggle.js 中添加
const toggleColumns = (props) => {
props.forEach(prop => toggleColumn(prop));
};

const hideColumns = (props) => {
props.forEach(prop => {
if (!tableRef.value) return;
// 类似 toggleColumn 逻辑，但强制隐藏
});
};

const showColumns = (props) => {
props.forEach(prop => {
if (!tableRef.value) return;
// 类似 toggleColumn 逻辑，但强制显示
});
};

return { toggleColumn, toggleColumns, hideColumns, showColumns };

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