ant-design-vue/components/cascader/index.en-US.md

category	type	title	cover
Components	Data Entry	Cascader	https://mdn.alipayobjects.com/huamei_7uahnr/afts/img/A*tokLTp73TsQAAAAAAAAAAAAADrJ8AQ/original

Cascade selection box.

When To Use

• When you need to select from a set of associated data set. Such as province/city/district, company level, things classification.
• When selecting from a large data set, with multi-stage classification separated for easy selection.
• Chooses cascade items in one float layer for better user experience.

API

<a-cascader :options="options" v-model:value="value" />

Property	Description	Type	Default	Version
allowClear	whether allow clear	boolean	true
autofocus	get focus when component mounted	boolean	false
bordered	Whether has border style	boolean	true	3.2
clearIcon	The custom clear icon	slot	-	3.2
changeOnSelect	(Work on single select) change value on each selection if set to true, see above demo for details	boolean	false
disabled	whether disabled select	boolean	false
displayRender	render function of displaying selected options, you can use #displayRender="{labels, selectedOptions}".	({labels, selectedOptions}) => VNode	labels => labels.join(' / ')
popupClassName	additional className of popup overlay	string	-	4.0
dropdownStyle	additional style of popup overlay	CSSProperties	{}	3.0
expandIcon	Customize the current item expand icon	slot	-	3.0
expandTrigger	expand current item when click or hover	click | hover	'click'
fieldNames	custom field name for label and value and children	object	{ label: 'label', value: 'value', children: 'children' }
getPopupContainer	Parent Node which the selector should be rendered to. Default to body. When position issues happen, try to modify it into scrollable content and position it relative.	Function(triggerNode)	() => document.body
loadData	To load option lazily, and it cannot work with showSearch	(selectedOptions) => void	-
maxTagCount	Max tag count to show. responsive will cost render performance	number | responsive	-	3.0
maxTagPlaceholder	Placeholder for not showing tags	v-slot | function(omittedValues)	-	3.0
multiple	Support multiple or not	boolean	-	3.0
notFoundContent	Specify content to show when no result matches.	string | slot	'Not Found'
open	set visible of cascader popup	boolean	-	3.0
options	data options of cascade	Option[]	-
placeholder	input placeholder	string	'Please select'
placement	Use preset popup align config from builtinPlacements	bottomLeft | bottomRight | topLeft | topRight	bottomLeft	3.0
removeIcon	The custom remove icon	slot	-	3.2
searchValue	Set search value，Need work with showSearch	string	-	3.0
showSearch	Whether show search input in single mode.	boolean | object	false
size	input size	large | default | small	default
status	Set validation status	'error' | 'warning'	-	3.3.0
suffixIcon	The custom suffix icon	string | VNode | slot	-
showCheckedStrategy	The way show selected item in box. ** SHOW_CHILD: ** just show child treeNode. Cascader.SHOW_PARENT: just show parent treeNode (when all child treeNode under the parent treeNode are checked)	Cascader.SHOW_PARENT | Cascader.SHOW_CHILD	Cascader.SHOW_PARENT	3.3.0
tagRender	Customize tag render when multiple	slot	-	3.0
value(v-model)	selected value	string[] | number[]	-

showSearch

Fields in showSearch:

Property	Description	Type	Default
filter	The function will receive two arguments, inputValue and option, if the function returns true, the option will be included in the filtered set; Otherwise, it will be excluded.	function(inputValue, path): boolean
limit	Set the count of filtered items	number | false	50
matchInputWidth	Whether the width of result list equals to input's	boolean
render	Used to render filtered options, you can use #showSearchRender="{inputValue, path}"	function({inputValue, path}): VNode
sort	Used to sort filtered options.	function(a, b, inputValue)

events

Events Name	Description	Arguments	version
change	callback when finishing cascader select	(value, selectedOptions) => void	-
dropdownVisibleChange	callback when popup shown or hidden	(value) => void	-	3.0
search	callback when input value change	(value) => void	-	1.5.4

Option

interface Option {
  value: string | number;
  label?: VNode;
  disabled?: boolean;
  children?: Option[];
  // Determines if this is a leaf node(effective when `loadData` is specified).
  // `false` will force trade TreeNode as a parent node.
  // Show expand icon even if the current node has no children.
  isLeaf?: boolean;
}

Methods

Name	Description
blur()	remove focus
focus()	get focus