📄 tanstack/table/v8/docs/framework/lit/examples/column-sizing
File: column-sizing.md | Updated: 11/15/2025
Source: https://tanstack.com/table/v8/docs/framework/lit/examples/column-sizing
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Lit Example: Column Sizing
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src
-
main.ts
-
makeData.ts
-
-
.gitignore
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README.md
-
index.html
-
package.json
-
tsconfig.json
ts
import { customElement } from 'lit/decorators.js'
import { html, LitElement } from 'lit'
import { repeat } from 'lit/directives/repeat.js'
import { state } from 'lit/decorators/state.js'
import {
ColumnDef,
flexRender,
getCoreRowModel,
TableController,
} from '@tanstack/lit-table'
import { makeData, Person } from './makeData'
const columns: ColumnDef<Person>[] = [\
{\
accessorKey: 'firstName',\
cell: info => info.getValue(),\
},\
{\
accessorFn: row => row.lastName,\
id: 'lastName',\
cell: info => info.getValue(),\
header: () => html`<span>Last Name</span>`,\
},\
{\
accessorKey: 'age',\
header: () => 'Age',\
},\
{\
accessorKey: 'visits',\
header: () => html`<span>Visits</span>`,\
},\
{\
accessorKey: 'status',\
header: 'Status',\
},\
{\
accessorKey: 'progress',\
header: 'Profile Progress',\
},\
{\
accessorKey: 'rank',\
header: 'Rank',\
invertSorting: true, //invert the sorting order (golf score-like where smaller is better)\
},\
{\
accessorKey: 'createdAt',\
header: 'Created At',\
},\
]
const data: Person[] = makeData(1000)
@customElement('lit-table-example')
class LitTableExample extends LitElement {
@state()
private tableController = new TableController<Person>(this)
protected render() {
const table = this.tableController.table({
data,
columns,
columnResizeMode: 'onChange',
columnResizeDirection: 'ltr',
getCoreRowModel: getCoreRowModel(),
debugTable: true,
debugHeaders: true,
debugColumns: true,
})
return html`
<table style="width: ${table.getCenterTotalSize()}px">
<thead>
${repeat(
table.getHeaderGroups(),
headerGroup => headerGroup.id,
headerGroup => html`
<tr>
${headerGroup.headers.map(
header => html`
<th
colspan="${header.colSpan}"
style="width: ${header.getSize()}px"
>
${flexRender(
header.column.columnDef.header,
header.getContext()
)}
${header.isPlaceholder
? null
: html`<div
class="resizer ${table.options
.columnResizeDirection} ${header.column.getIsResizing()
? 'is-resizing'
: ''}"
@dblclick="${() => header.column.resetSize()}"
@mousedown="${header.getResizeHandler()}"
@touchstart="${header.getResizeHandler()}"
/>`}
</th>
`
)}
</tr>
`
)}
</thead>
<tbody>
${table
.getRowModel()
.rows.slice(0, 10)
.map(
row => html`
<tr>
${row
.getVisibleCells()
.map(
cell => html`
<td>
${flexRender(
cell.column.columnDef.cell,
cell.getContext()
)}
</td>
`
)}
</tr>
`
)}
</tbody>
</table>
<pre>
${JSON.stringify(
{
columnSizing: table.getState().columnSizing,
columnSizingInfo: table.getState().columnSizingInfo,
},
null,
2
)}</pre
>
<style>
* {
font-family: sans-serif;
font-size: 14px;
box-sizing: border-box;
}
table {
border: 1px solid lightgray;
border-collapse: collapse;
}
tbody {
border-bottom: 1px solid lightgray;
}
th,
td {
border-bottom: 1px solid lightgray;
border-right: 1px solid lightgray;
padding: 2px 4px;
}
th {
padding: 2px 4px;
position: relative;
font-weight: bold;
text-align: center;
height: 30px;
}
tfoot {
color: gray;
}
tfoot th {
font-weight: normal;
}
.resizer {
position: absolute;
top: 0;
height: 100%;
width: 5px;
background: rgba(0, 0, 0, 0.5);
cursor: col-resize;
user-select: none;
touch-action: none;
}
.resizer.ltr {
right: 0;
}
.resizer.rtl {
left: 0;
}
.resizer.is-resizing {
background: blue;
opacity: 1;
}
@media (hover: hover) {
.resizer {
opacity: 0;
}
*:hover > .resizer {
opacity: 1;
}
}
</style>
`
}
}
import { customElement } from 'lit/decorators.js'
import { html, LitElement } from 'lit'
import { repeat } from 'lit/directives/repeat.js'
import { state } from 'lit/decorators/state.js'
import {
ColumnDef,
flexRender,
getCoreRowModel,
TableController,
} from '@tanstack/lit-table'
import { makeData, Person } from './makeData'
const columns: ColumnDef<Person>[] = [\
{\
accessorKey: 'firstName',\
cell: info => info.getValue(),\
},\
{\
accessorFn: row => row.lastName,\
id: 'lastName',\
cell: info => info.getValue(),\
header: () => html`<span>Last Name</span>`,\
},\
{\
accessorKey: 'age',\
header: () => 'Age',\
},\
{\
accessorKey: 'visits',\
header: () => html`<span>Visits</span>`,\
},\
{\
accessorKey: 'status',\
header: 'Status',\
},\
{\
accessorKey: 'progress',\
header: 'Profile Progress',\
},\
{\
accessorKey: 'rank',\
header: 'Rank',\
invertSorting: true, //invert the sorting order (golf score-like where smaller is better)\
},\
{\
accessorKey: 'createdAt',\
header: 'Created At',\
},\
]
const data: Person[] = makeData(1000)
@customElement('lit-table-example')
class LitTableExample extends LitElement {
@state()
private tableController = new TableController<Person>(this)
protected render() {
const table = this.tableController.table({
data,
columns,
columnResizeMode: 'onChange',
columnResizeDirection: 'ltr',
getCoreRowModel: getCoreRowModel(),
debugTable: true,
debugHeaders: true,
debugColumns: true,
})
return html`
<table style="width: ${table.getCenterTotalSize()}px">
<thead>
${repeat(
table.getHeaderGroups(),
headerGroup => headerGroup.id,
headerGroup => html`
<tr>
${headerGroup.headers.map(
header => html`
<th
colspan="${header.colSpan}"
style="width: ${header.getSize()}px"
>
${flexRender(
header.column.columnDef.header,
header.getContext()
)}
${header.isPlaceholder
? null
: html`<div
class="resizer ${table.options
.columnResizeDirection} ${header.column.getIsResizing()
? 'is-resizing'
: ''}"
@dblclick="${() => header.column.resetSize()}"
@mousedown="${header.getResizeHandler()}"
@touchstart="${header.getResizeHandler()}"
/>`}
</th>
`
)}
</tr>
`
)}
</thead>
<tbody>
${table
.getRowModel()
.rows.slice(0, 10)
.map(
row => html`
<tr>
${row
.getVisibleCells()
.map(
cell => html`
<td>
${flexRender(
cell.column.columnDef.cell,
cell.getContext()
)}
</td>
`
)}
</tr>
`
)}
</tbody>
</table>
<pre>
${JSON.stringify(
{
columnSizing: table.getState().columnSizing,
columnSizingInfo: table.getState().columnSizingInfo,
},
null,
2
)}</pre
>
<style>
* {
font-family: sans-serif;
font-size: 14px;
box-sizing: border-box;
}
table {
border: 1px solid lightgray;
border-collapse: collapse;
}
tbody {
border-bottom: 1px solid lightgray;
}
th,
td {
border-bottom: 1px solid lightgray;
border-right: 1px solid lightgray;
padding: 2px 4px;
}
th {
padding: 2px 4px;
position: relative;
font-weight: bold;
text-align: center;
height: 30px;
}
tfoot {
color: gray;
}
tfoot th {
font-weight: normal;
}
.resizer {
position: absolute;
top: 0;
height: 100%;
width: 5px;
background: rgba(0, 0, 0, 0.5);
cursor: col-resize;
user-select: none;
touch-action: none;
}
.resizer.ltr {
right: 0;
}
.resizer.rtl {
left: 0;
}
.resizer.is-resizing {
background: blue;
opacity: 1;
}
@media (hover: hover) {
.resizer {
opacity: 0;
}
*:hover > .resizer {
opacity: 1;
}
}
</style>
`
}
}
