el-table

name	el-table
description	Table component for displaying data with sorting, filtering, selection, and pagination. Invoke when user needs to display tabular data or implement data grid functionality.
metadata	{"author":"jiaiyan","version":"1.0.0"}

Element Plus Table Component

Display multiple data with similar format. You can sort, filter, compare your data in a table.

When to Invoke

Invoke this skill when:

• User needs to display data in a table format
• User wants to implement sorting or filtering
• User needs row selection (single or multiple)
• User wants fixed columns or header
• User needs expandable rows or tree data
• User asks about table pagination

Features

• Flexible Layout: Fixed header, fixed columns, fluid height
• Row Selection: Single or multiple selection
• Sorting: Local or remote sorting
• Filtering: Column-based filtering
• Custom Templates: Custom cell and header content
• Expandable Rows: Row expansion for detailed content
• Tree Data: Hierarchical data display
• Summary Row: Automatic or custom summaries
• Cell Merging: Rowspan and colspan support

API Reference

Table Attributes

Name	Description	Type	Default
data	table data	any[]	[]
height	table's height	string | number	—
max-height	table's max-height	string | number	—
stripe	whether Table is striped	boolean	false
border	whether Table has vertical border	boolean	false
size	size of Table	'' | 'large' | 'default' | 'small'	—
fit	whether width fits container	boolean	true
show-header	whether Table header is visible	boolean	true
highlight-current-row	whether current row is highlighted	boolean	false
current-row-key	key of current row	string | number	—
row-class-name	custom class names for rows	Function | string	—
row-style	custom style for rows	Function | object	—
cell-class-name	custom class names for cells	Function | string	—
cell-style	custom style for cells	Function | object	—
row-key	key of row data	Function | string	—
empty-text	displayed text when data is empty	string	No Data
default-expand-all	whether expand all rows	boolean	false
expand-row-keys

Table Events

Name	Description	Type
select	triggers when checkbox is clicked	(selection, row) => void
select-all	triggers when header checkbox is clicked	(selection) => void
selection-change	triggers when selection changes	(selection) => void
cell-mouse-enter	triggers when mouse enters a cell	(row, column, cell, event) => void
cell-mouse-leave	triggers when mouse leaves a cell	(row, column, cell, event) => void
cell-click	triggers when clicking a cell	(row, column, cell, event) => void
cell-dblclick	triggers when double clicking a cell	(row, column, cell, event) => void
cell-contextmenu	triggers when right clicking a cell	(row, column, cell, event) => void
row-click	triggers when clicking a row	(row, column, event) => void
row-contextmenu	triggers when right clicking a row	(row, column, event) => void
row-dblclick	triggers when double clicking a row	(row, column, event) => void
header-click	triggers when clicking a column header	(column, event) => void
header-contextmenu	triggers when right clicking a column header	(column, event) => void
sort-change	triggers when sorting changes	(data) => void
filter-change	triggers when filter changes	(filters) => void
current-change	triggers when current row changes	(currentRow, oldCurrentRow) => void
header-dragend	triggers after header column width changes	(newWidth, oldWidth, column, event) => void

Table Exposes

Name	Description	Type
clearSelection	clear selection	() => void
getSelectionRows	returns selected rows	() => any[]
toggleRowSelection	toggle row selection	(row, selected?, ignoreSelectable?) => void
toggleAllSelection	toggle select all	() => void
toggleRowExpansion	toggle row expansion	(row, expanded?) => void
setCurrentRow	set current row	(row) => void
clearSort	clear sorting	() => void
clearFilter	clear filters	(columnKeys?) => void
doLayout	refresh layout	() => void
sort	sort manually	(prop, order) => void
scrollTo	scroll to position	(options) => void
setScrollTop	set scroll top	(top) => void
setScrollLeft	set scroll left	(left) => void

TableColumn Attributes

Name	Description	Type	Default
type	type of column	'selection' | 'index' | 'expand'	—
index	customize index	number | Function	—
column-key	column's key	string	—
label	column label	string	—
prop	field name	string	—
width	column width	string | number	—
min-width	minimum column width	string | number	—
fixed	fixed column	'left' | 'right' | boolean	—
render-header	render function for header	Function	—
sortable	whether column is sortable	boolean | 'custom'	false
sort-method	custom sort method	Function	—
sort-by	sort by field	Function | string | string[]	—
sort-orders	sort orders	array	['ascending', 'descending', null]
resizable	whether column is resizable	boolean	true
formatter	cell formatter	Function	—
show-overflow-tooltip	show tooltip on overflow	boolean | object	false
align	alignment	'left' | 'center' | 'right'	—
header-align	header alignment	'left' | 'center' | 'right'

TableColumn Slots

Name	Description	Type
default	custom content	{ row, column, $index }
header	custom header	{ column, $index }

Usage Examples

Basic Table

<template>
  <el-table :data="tableData" style="width: 100%">
    <el-table-column prop="date" label="Date" width="180" />
    <el-table-column prop="name" label="Name" width="180" />
    <el-table-column prop="address" label="Address" />
  </el-table>
</template>

<script setup>
const tableData = [
  { date: '2016-05-03', name: 'Tom', address: 'No. 189, Grove St' },
  { date: '2016-05-02', name: 'Jack', address: 'No. 189, Grove St' }
]
</script>

Striped Table

<template>
  <el-table :data="tableData" stripe style="width: 100%">
    <el-table-column prop="date" label="Date" />
    <el-table-column prop="name" label="Name" />
  </el-table>
</template>

Table with Border

<template>
  <el-table :data="tableData" border style="width: 100%">
    <el-table-column prop="date" label="Date" />
    <el-table-column prop="name" label="Name" />
  </el-table>
</template>

Fixed Header

<template>
  <el-table :data="tableData" height="250" style="width: 100%">
    <el-table-column prop="date" label="Date" width="180" />
    <el-table-column prop="name" label="Name" width="180" />
    <el-table-column prop="address" label="Address" />
  </el-table>
</template>

Fixed Column

<template>
  <el-table :data="tableData" style="width: 100%">
    <el-table-column fixed prop="date" label="Date" width="150" />
    <el-table-column prop="name" label="Name" width="120" />
    <el-table-column prop="address" label="Address" width="300" />
    <el-table-column fixed="right" label="Operations" width="120">
      <template #default>
        <el-button type="text" size="small">Detail</el-button>
        <el-button type="text" size="small">Edit</el-button>
      </template>
    </el-table-column>
  </el-table>
</template>

Multiple Selection

<template>
  <el-table ref="multipleTableRef" :data="tableData" @selection-change="handleSelectionChange">
    <el-table-column type="selection" width="55" />
    <el-table-column prop="date" label="Date" width="120" />
    <el-table-column prop="name" label="Name" width="120" />
  </el-table>
  <div style="margin-top: 20px">
    <el-button @click="toggleSelection()">Clear selection</el-button>
  </div>
</template>

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

const multipleTableRef = ref()
const multipleSelection = ref([])

const handleSelectionChange = (val) => {
  multipleSelection.value = val
}

const toggleSelection = () => {
  multipleTableRef.value.clearSelection()
}
</script>

Sorting

<template>
  <el-table :data="tableData" :default-sort="{ prop: 'date', order: 'descending' }">
    <el-table-column prop="date" label="Date" sortable width="180" />
    <el-table-column prop="name" label="Name" sortable width="180" />
    <el-table-column prop="address" label="Address" />
  </el-table>
</template>

Custom Column Template

<template>
  <el-table :data="tableData" style="width: 100%">
    <el-table-column label="Date" width="180">
      <template #default="scope">
        <div style="display: flex; align-items: center">
          <el-icon><timer /></el-icon>
          <span style="margin-left: 10px">{{ scope.row.date }}</span>
        </div>
      </template>
    </el-table-column>
    <el-table-column label="Name" width="180">
      <template #default="scope">
        <el-popover effect="light" trigger="hover" placement="top" width="auto">
          <template #default>
            <div>name: {{ scope.row.name }}</div>
          </template>
          <template #reference>
            <el-tag>{{ scope.row.name }}</el-tag>
          </template>
        </el-popover>
      </template>
    </el-table-column>
    <el-table-column label="Operations">
      <template #default="scope">
        <el-button size="small" @click="handleEdit(scope.$index, scope.row)">Edit</el-button>
        <el-button size="small" type="danger" @click="handleDelete(scope.$index, scope.row)">Delete</el-button>
      </template>
    </el-table-column>
  </el-table>
</template>

Expandable Row

<template>
  <el-table :data="tableData" style="width: 100%">
    <el-table-column type="expand">
      <template #default="props">
        <div m="4">
          <p m="t-0 b-2">State: {{ props.row.state }}</p>
          <p m="t-0 b-2">City: {{ props.row.city }}</p>
        </div>
      </template>
    </el-table-column>
    <el-table-column prop="date" label="Date" width="180" />
    <el-table-column prop="name" label="Name" width="180" />
  </el-table>
</template>

Summary Row

<template>
  <el-table :data="tableData" show-summary style="width: 100%">
    <el-table-column prop="id" label="ID" width="180" />
    <el-table-column prop="name" label="Name" />
    <el-table-column prop="amount1" label="Amount 1" />
    <el-table-column prop="amount2" label="Amount 2" />
  </el-table>
</template>

Custom Summary

<template>
  <el-table :data="tableData" show-summary :summary-method="getSummaries">
    <el-table-column prop="id" label="ID" />
    <el-table-column prop="amount" label="Amount" />
  </el-table>
</template>

<script setup>
const getSummaries = (param) => {
  const { columns, data } = param
  const sums = []
  columns.forEach((column, index) => {
    if (index === 0) {
      sums[index] = 'Total Cost'
      return
    }
    const values = data.map((item) => Number(item[column.property]))
    if (!values.every((value) => Number.isNaN(value))) {
      sums[index] = `$ ${values.reduce((prev, curr) => {
        const value = Number(curr)
        if (!Number.isNaN(value)) {
          return prev + curr
        } else {
          return prev
        }
      }, 0)}`
    } else {
      sums[index] = 'N/A'
    }
  })
  return sums
}
</script>

Common Issues

1. Table Not Updating

Use doLayout() after data changes:

<script setup>
const tableRef = ref()

const updateData = async () => {
  await fetchData()
  nextTick(() => {
    tableRef.value?.doLayout()
  })
}
</script>

2. Selection Not Clearing

Use clearSelection():

<script setup>
const tableRef = ref()

const clearAll = () => {
  tableRef.value?.clearSelection()
}
</script>

3. Sort Not Working

Ensure prop matches data field:

<el-table-column prop="name" sortable />  <!-- Must match row.name -->

Best Practices

1. Use row-key: Set row-key for better performance and selection
2. Virtual scroll: Use TableV2 for large datasets
3. Lazy loading: Use lazy for tree data
4. Debounce filters: Debounce filter operations
5. Fixed width: Set width for fixed columns