Table

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

Basic usage

Basic table is just for data display.

After setting attribute data of b-table with an object array, you can use prop (corresponding to a key of the object in data array) in b-table-column to insert data to table columns, and set the attribute label to define the column name. You can also use the attribute width to define the width of columns.

Table with border

By default, Table has no vertical border. If you need it, you can set attribute border to true.

Table with status

You can highlight your table content to distinguish between "success, information, warning, danger" and other states.

Use row-class-name in b-table to add custom classes to a certain row. Then you can style it with custom classes.

Table with fixed header

When there are too many rows, you can use a fixed header.

By setting the attribute height of b-table, you can fix the table header without any other codes.

Table with fixed column

When there are too many columns, you can fix some of them.

Attribute fixed is used in b-table-column, it accepts a Boolean. If true, the column will be fixed at left. It also accepts two string literals: 'left' and 'right', both indicating that the column will be fixed at corresponding direction.

Table with fixed columns and header

When you have huge chunks of data to put in a table, you can fix the header and columns at the same time.

Fix columns and header at the same time by combining the above two examples.

Fluid-height Table with fixed header (and columns)

When the the data is dynamically changed, you might want the table to have a maximum height rather than a fixed height and to show the scroll bar if needed.

By setting the attribute max-height of b-table, you can fix the table header. The table body scrolls only if the height of the rows exceeds the max height value.

Grouping table head

When the data structure is complex, you can use group header to show the data hierarchy.

Only need to place b-table-column inside a b-table-column, you can achieve group header.

Single select

Single row selection is supported.

Table supports single row selection. You can activate it by adding the highlight-current-row attribute. An event called current-change will be triggered when row selection changes, and its parameters are the rows after and before this change: currentRow and oldCurrentRow. If you need to display row index, you can add a new b-table-column with its type attribute assigned to index, and you will see the index starting from 1.

Multiple select

You can also select multiple rows.

Activating multiple selection is easy: simply add an b-table-column with its type set to selection. Apart from multiple selection, this example also uses show-overflow-tooltip. By default, if the content is too long, it will break into multiple lines. If you want to keep it in one line, use attribute show-overflow-tooltip, which accepts a Boolean value. When set true, the extra content will show in tooltip when hover on the cell.

Sorting

Sort the data to find or compare data quickly.

Set attribute sortable in a certain column to sort the data based on this column. It accepts Boolean with a default value false. Set table attribute default-sort to determine default sort column and order. To apply your own sorting rules, use sort-method or sort-by. If you need remote sorting from backend, set sortable to custom, and listen to the sort-change event on Table. In the event handler, you have access to the sorting column and sorting order so that you can fetch sorted table data from API. In this example we use another attribute named formatter to format the value of certain columns. It accepts a function which has two parameters: row and column. You can handle it according to your own needs.

Custom column template

Customize table column so it can be integrated with other components.

You have access to the following data: row, column, $index and store (state management of Table) by slot.

Table with custom header

Customize table header so it can be even more customized.

You can customize how the header looks by header slots.

Expandable row

When the row content is too long and you do not want to display the horizontal scroll bar, you can use the expandable row feature.

Activate expandable row by adding type="expand" and slot. The template for b-table-column will be rendered as the contents of the expanded row, and you can access the same attributes as when you are using slot in custom column templates.

Tree data and lazy mode

You can display tree structure data. When row contains the children field, it is treated as nested data. For rendering nested data, the prop row-key is required. Also, child row data can be loaded asynchronously. Set lazy property of Table to true and the function load. Specify hasChildren attribute in row to determine which row contains children. Both children and hasChildren can be configured via tree-props.

Summary row

For table of numbers, you can add an extra row at the table footer displaying each column's sum.

You can add the summary row by setting show-summary to true. By default, for the summary row, the first column does not sum anything up but always displays 'Sum' (you can configure the displayed text using sum-text), while other columns sum every number in that column up and display them. You can of course define your own sum behaviour. To do so, pass a method to summary-method, which returns an array, and each element of the returned array will be displayed in the columns of the summary row. The second table of this example is a detailed demo.

Rowspan and colspan

Configuring rowspan and colspan allows you to merge cells

Use the span-method attribute to configure rowspan and colspan. It accepts a method, and passes an object to that method including current row row, current column column, current row index rowIndex and current column index columnIndex. The method should return an array of two numbers, the first number being rowspan and second colspan. It can also return an object with rowspan and colspan props.

Custom index

You can customize row index in type=index columns.

To customize row indices, use index attribute on b-table-column with type=index. If it is assigned to a number, all indices will have an offset of that number. It also accepts a method with each index (starting from 0) as parameter, and the returned value will be displayed as index.

Table Layout

The table-layout property sets the algorithm used to lay out table cells, rows, and columns.

Table Attributes

Name	Description	Type	Accepted Values	Default
data	Table data	array	—	—
height	Table's height. By default it has an auto height. If its value is a number, the height is measured in pixels; if its value is a string, the value will be assigned to element's style.height, the height is affected by external styles	string / number	—	—
max-height	Table's max-height. The legal value is a number or the height in px.	string / number	—	—
stripe	whether Table is striped	boolean	—	false
border	whether Table has vertical border	boolean	—	false
size	size of Table	string	large / default /small	—
fit	whether width of column automatically fits its 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, a set only prop	string / number	—	—
row-class-name	function that returns custom class names for a row, or a string assigning class names for every row	function({ row, rowIndex }) / string	—	—
row-style	function that returns custom style for a row, or an object assigning custom style for every row	function({ row, rowIndex }) / object	—	—
cell-class-name	function that returns custom class names for a cell, or a string assigning class names for every cell	function({ row, column, rowIndex, columnIndex }) / string	—	—
cell-style	function that returns custom style for a cell, or an object assigning custom style for every cell	function({ row, column, rowIndex, columnIndex }) / object	—	—
header-row-class-name	function that returns custom class names for a row in table header, or a string assigning class names for every row in table header	function({ row, rowIndex }) / string	—	—
header-row-style	function that returns custom style for a row in table header, or an object assigning custom style for every row in table header	function({ row, rowIndex }) / object	—	—
header-cell-class-name	function that returns custom class names for a cell in table header, or a string assigning class names for every cell in table header	function({ row, column, rowIndex, columnIndex }) / string	—	—
header-cell-style	function that returns custom style for a cell in table header, or an object assigning custom style for every cell in table header	function({ row, column, rowIndex, columnIndex }) / object	—	—
row-key	key of row data, used for optimizing rendering. Required if reserve-selection is on or display tree data. When its type is String, multi-level access is supported, e.g. user.info.id, but user.info[0].id is not supported, in which case Function should be used.	function(row) / string	—	—
empty-text	Displayed text when data is empty. You can customize this area with #empty	string	—	No Data
default-expand-all	whether expand all rows by default, works when the table has a column type="expand" or contains tree structure data	boolean	—	false
expand-row-keys	set expanded rows by this prop, prop's value is the keys of expand rows, you should set row-key before using this prop	array	—	—
default-sort	set the default sort column and order. property prop is used to set default sort column, property order is used to set default sort order	object	(order: 'ascending' | 'descending')	if prop is set, and order is not set, then order is default to ascending
tooltip-effect	tooltip effect property	string	dark / light	dark
show-summary	whether to display a summary row	boolean	—	false
sum-text	displayed text for the first column of summary row	string	—	Sum
summary-method	custom summary method	function({ columns, data })	—	—
span-method	method that returns rowspan and colspan	function({ row, column, rowIndex, columnIndex })	—	—
select-on-indeterminate	controls the behavior of master checkbox in multi-select tables when only some rows are selected (but not all). If true, all rows will be selected, else deselected.	boolean	—	true
indent	horizontal indentation of tree data	number	—	16
lazy	whether to lazy loading data	boolean	—	—
load	method for loading child row data, only works when lazy is true	function(row, treeNode, resolve)	—	—
tree-props	configuration for rendering nested data	object	—	{ hasChildren: 'hasChildren', children: 'children' }
table-layout	Sets the algorithm used to lay out table cells, rows, and columns	string	fixed / auto	fixed
scrollbar-always-on	always show scrollbar	boolean	—	false
flexible	ensure main axis minimum-size doesn't follow the content	boolean	—	false

Table Events

Name	Description	Parameters
select	triggers when user clicks the checkbox in a row	selection, row
select-all	triggers when user clicks the checkbox in table header	selection
selection-change	triggers when selection changes	selection
cell-mouse-enter	triggers when hovering into a cell	row, column, cell, event
cell-mouse-leave	triggers when hovering out of a cell	row, column, cell, event
cell-click	triggers when clicking a cell	row, column, cell, event
cell-dblclick	triggers when double clicking a cell	row, column, cell, event
cell-contextmenu	triggers when user right clicks on a cell	row, column, cell, event
row-click	triggers when clicking a row	row, column, event
row-contextmenu	triggers when user right clicks on a row	row, column, event
row-dblclick	triggers when double clicking a row	row, column, event
header-click	triggers when clicking a column header	column, event
header-contextmenu	triggers when user right clicks on a column header	column, event
sort-change	triggers when Table's sorting changes	{ column, prop, order }
filter-change	column's key. If you need to use the filter-change event, this attribute is mandatory to identify which column is being filtered	filters
current-change	triggers when current row changes	currentRow, oldCurrentRow
header-dragend	triggers after changing a column's width by dragging the column header's border	newWidth, oldWidth, column, event
expand-change	triggers when user expands or collapses a row (for expandable table, second param is expandedRows; for tree Table, second param is expanded)	row, (expandedRows | expanded)

Table Methods

Method	Description	Parameters
clearSelection	used in multiple selection Table, clear user selection	—
getSelectionRows	returns the currently selected rows
toggleRowSelection	used in multiple selection Table, toggle if a certain row is selected. With the second parameter, you can directly set if this row is selected	row, selected
toggleAllSelection	used in multiple selection Table, toggle select all and deselect all	—
toggleRowExpansion	used in expandable Table or tree Table, toggle if a certain row is expanded. With the second parameter, you can directly set if this row is expanded or collapsed	row, expanded
setCurrentRow	used in single selection Table, set a certain row selected. If called without any parameter, it will clear selection.	row
clearSort	clear sorting, restore data to the original order	—
clearFilter	clear filters of the columns whose columnKey are passed in. If no params, clear all filters	columnKeys
doLayout	refresh the layout of Table. When the visibility of Table changes, you may need to call this method to get a correct layout	—
sort	sort Table manually. Property prop is used to set sort column, property order is used to set sort order	prop: string, order: string
scrollTo	scrolls to a particular set of coordinates	(options: ScrollToOptions | number, yCoord?: number)
setScrollTop	set vertical scroll position	top
setScrollLeft	set horizontal scroll position	left

Table Slots

Name	Description	Subtags
-	customize default content	Table-column
append	Contents to be inserted after the last row. You may need this slot if you want to implement infinite scroll for the table. This slot will be displayed above the summary row if there is one.	—
empty	you can customize content when data is empty.	—

Table-column Attributes

Name	Description	Type	Accepted Values	Default
type	type of the column. If set to selection, the column will display checkbox. If set to index, the column will display index of the row (staring from 1). If set to expand, the column will display expand icon.	string	selection / index / expand	—
index	customize indices for each row, works on columns with type=index	number / function(index)	—	—
label	column label	string	—	—
column-key	column's key. If you need to use the filter-change event, you need this attribute to identify which column is being filtered	string	—	—
prop	field name. You can also use its alias: property	string	—	—
width	column width	string / number	—	—
min-width	column minimum width. Columns with width has a fixed width, while columns with min-width has a width that is distributed in proportion	string / number	—	—
fixed	whether column is fixed at left / right. Will be fixed at left if true	string / boolean	true / 'left' / 'right'	—
render-header	render function for table header of this column	function({ column, $index })	—	—
sortable	whether column can be sorted. Remote sorting can be done by setting this attribute to 'custom' and listening to the sort-change event of Table	boolean / string	custom	false
sort-method	sorting method, works when sortable is true. Should return a number, just like Array.sort	function(a, b)	—	—
sort-by	specify which property to sort by, works when sortable is true and sort-method is undefined. If set to an Array, the column will sequentially sort by the next property if the previous one is equal	function(row, index) / string / array	—	—
sort-orders	the order of the sorting strategies used when sorting the data, works when sortable is true. Accepts an array, as the user clicks on the header, the column is sorted in order of the elements in the array	array	(the elements in the array need to be one of the following: ascending, descending and null restores to the original order)	['ascending', 'descending', null]
resizable	whether column width can be resized, works when border of b-table is true	boolean	—	true
formatter	function that formats cell content	function(row, column, cellValue, index)	—	—
show-overflow-tooltip	whether to hide extra content and show them in a tooltip when hovering on the cell	boolean	—	false
align	alignment	string	left / center / right	left
header-align	alignment of the table header. If omitted, the value of the above align attribute will be applied	string	left / center / right	—
class-name	class name of cells in the column	string	—	—
label-class-name	class name of the label of this column	string	—	—
selectable	function that determines if a certain row can be selected, works when type is 'selection'	function(row, index)	—	—
reserve-selection	whether to reserve selection after data refreshing, works when type is 'selection'. Note that row-key is required for this to work	boolean	—	false
filters	an array of data filtering options. For each element in this array, text and value are required	Array<{text: string, value: string}>	—	—
filter-placement	placement for the filter dropdown	string	top / top-start / top-end / bottom / bottom-start / bottom-end / left / left-start / left-end / right / right-start / right-end	—
filter-multiple	whether data filtering supports multiple options	boolean	—	true
filter-method	data filtering method. If filter-multiple is on, this method will be called multiple times for each row, and a row will display if one of the calls returns true	function(value, row, column)	—	—
filtered-value	filter value for selected data, might be useful when table header is rendered with render-header	array	—	—

Table-column Slots

Name	Description
—	Custom content for table columns. The scope parameter is { row, column, $index }
header	Custom content for table header. The scope parameter is { column, $index }