el-table-v2

name	el-table-v2
description	Virtualized Table component for rendering massive data efficiently. Invoke when user needs to display large datasets with virtual scrolling for performance.
metadata	{"author":"jiaiyan","version":"1.0.0"}

Virtualized Table (TableV2) Component

TableV2 provides a virtualized table for rendering massive data efficiently.

When to Use

• Large datasets (1000+ rows)
• Performance-critical tables
• Virtual scrolling needed
• Real-time data updates

Basic Usage

<template>
  <el-table-v2
    :columns="columns"
    :data="data"
    :width="700"
    :height="400"
  />
</template>

<script setup>
const columns = [
  { key: 'id', title: 'ID', width: 100 },
  { key: 'name', title: 'Name', width: 200 },
  { key: 'email', title: 'Email', width: 300 }
]

const data = Array.from({ length: 1000 }).map((_, idx) => ({
  id: idx,
  name: `User ${idx}`,
  email: `user${idx}@example.com`
}))
</script>

Auto Resizer

<template>
  <el-auto-resizer>
    <template #default="{ height, width }">
      <el-table-v2
        :columns="columns"
        :data="data"
        :width="width"
        :height="height"
      />
    </template>
  </el-auto-resizer>
</template>

Custom Cell Renderer

<template>
  <el-table-v2
    :columns="columns"
    :data="data"
    :width="700"
    :height="400"
  />
</template>

<script setup>
import { h } from 'vue'
import { ElButton } from 'element-plus'

const columns = [
  { key: 'id', title: 'ID', width: 100 },
  { 
    key: 'action', 
    title: 'Action', 
    width: 150,
    cellRenderer: ({ rowData }) => h(ElButton, { size: 'small' }, () => 'Edit')
  }
]

const data = Array.from({ length: 100 }).map((_, idx) => ({
  id: idx
}))
</script>

Fixed Columns

<template>
  <el-table-v2
    :columns="columns"
    :data="data"
    :width="700"
    :height="400"
  />
</template>

<script setup>
const columns = [
  { key: 'id', title: 'ID', width: 100, fixed: 'left' },
  { key: 'name', title: 'Name', width: 200 },
  { key: 'email', title: 'Email', width: 300 },
  { key: 'action', title: 'Action', width: 100, fixed: 'right' }
]

const data = Array.from({ length: 100 }).map((_, idx) => ({
  id: idx,
  name: `User ${idx}`,
  email: `user${idx}@example.com`
}))
</script>

Selection

<template>
  <el-table-v2
    :columns="columns"
    :data="data"
    :width="700"
    :height="400"
  />
</template>

<script setup>
import { h, ref } from 'vue'
import { ElCheckbox } from 'element-plus'

const selectedIds = ref(new Set())

const columns = [
  {
    key: 'selection',
    width: 50,
    cellRenderer: ({ rowData }) => h(ElCheckbox, {
      modelValue: selectedIds.value.has(rowData.id),
      onChange: (val) => {
        if (val) selectedIds.value.add(rowData.id)
        else selectedIds.value.delete(rowData.id)
      }
    })
  },
  { key: 'name', title: 'Name', width: 200 }
]

const data = Array.from({ length: 100 }).map((_, idx) => ({
  id: idx,
  name: `User ${idx}`
}))
</script>

API Reference

TableV2 Attributes

Name	Description	Type	Default
columns	Column definitions	Column[]	—
data	Table data	Data[]	[]
width	Table width	number	—
height	Table height	number	—
row-height	Row height	number	50
header-height	Header height	number | number[]	50
row-key	Row key	string | Symbol | number	'id'
fixed	Fixed column width	boolean	false
cache	Pre-rendered rows	number	2
estimated-row-height	Estimated row height for dynamic	number	—

Column Attributes

Name	Description	Type	Default
key	Unique key	KeyType	—
title	Header title	string	—
width	Column width	number	—
align	Content alignment	'left' | 'center' | 'right'	'left'
fixed	Fixed direction	boolean | 'left' | 'right'	false
sortable	Sortable	boolean	false
cellRenderer	Custom cell renderer	Component | (props) => VNode	—
headerCellRenderer	Custom header renderer	Component | (props) => VNode	—

Events

Name	Description	Type
column-sort	Column sorted	(params) => void
scroll	Scroll event	(params) => void
end-reached	End reached	(remainDistance) => void
rows-rendered	Rows rendered	(params) => void

Exposes

Name	Description	Type
scrollTo	Scroll to position	(params) => void
scrollToRow	Scroll to row	(row, strategy?) => void

Best Practices

1. Use for datasets with 1000+ rows
2. Use estimated-row-height for dynamic heights
3. Use cache for smoother scrolling