级联选择框。
省市区级联。
<template>
<a-cascader :options="options" @change="onChange" placeholder="Please select" />
template>
<script>
export default {
data() {
return {
options: [
{
value: 'zhejiang',
label: 'Zhejiang',
children: [
{
value: 'hangzhou',
label: 'Hangzhou',
children: [
{
value: 'xihu',
label: 'West Lake',
},
],
},
],
},
{
value: 'jiangsu',
label: 'Jiangsu',
children: [
{
value: 'nanjing',
label: 'Nanjing',
children: [
{
value: 'zhonghuamen',
label: 'Zhong Hua Men',
},
],
},
],
},
],
};
},
methods: {
onChange(value) {
console.log(value);
},
},
};
script>
这种交互允许只选中父级选项。
<template>
<a-cascader :options="options" @change="onChange" changeOnSelect />
template>
<script>
export default {
data() {
return {
options: [
{
value: 'zhejiang',
label: 'Zhejiang',
children: [
{
value: 'hangzhou',
label: 'Hangzhou',
children: [
{
value: 'xihu',
label: 'West Lake',
},
],
},
],
},
{
value: 'jiangsu',
label: 'Jiangsu',
children: [
{
value: 'nanjing',
label: 'Nanjing',
children: [
{
value: 'zhonghuamen',
label: 'Zhong Hua Men',
},
],
},
],
},
],
};
},
methods: {
onChange(value) {
console.log(value);
},
},
};
script>
例如给最后一项加上邮编链接。
<template>
<a-cascader
:options="options"
:defaultValue="['zhejiang', 'hangzhou', 'xihu']"
style="width: 100%"
>
<template slot="displayRender" slot-scope="{labels, selectedOptions}">
<span v-for="(label, index) in labels" :key="selectedOptions[index].value">
<span v-if="index === labels.length - 1">
{{label}} (<a @click="e => handleAreaClick(e, label, selectedOptions[index])"
>{{selectedOptions[index].code}}a
>)
span>
<span v-else @click="onChange">
{{label}} /
span>
span>
template>
a-cascader>
template>
<script>
export default {
data() {
return {
options: [
{
value: 'zhejiang',
label: 'Zhejiang',
children: [
{
value: 'hangzhou',
label: 'Hangzhou',
children: [
{
value: 'xihu',
label: 'West Lake',
code: 752100,
},
],
},
],
},
{
value: 'jiangsu',
label: 'Jiangsu',
children: [
{
value: 'nanjing',
label: 'Nanjing',
children: [
{
value: 'zhonghuamen',
label: 'Zhong Hua Men',
code: 453400,
},
],
},
],
},
],
};
},
methods: {
onChange(value) {
console.log(value);
},
handleAreaClick(e, label, option) {
e.stopPropagation();
console.log('clicked', label, option);
},
},
};
script>
切换按钮和结果分开。
<template>
<span>
{{text}}
<a-cascader :options="options" @change="onChange">
<a href="#">Change citya>
a-cascader>
span>
template>
<script>
export default {
data() {
return {
text: 'Unselect',
options: [
{
value: 'zhejiang',
label: 'Zhejiang',
children: [
{
value: 'hangzhou',
label: 'Hangzhou',
children: [
{
value: 'xihu',
label: 'West Lake',
},
],
},
],
},
{
value: 'jiangsu',
label: 'Jiangsu',
children: [
{
value: 'nanjing',
label: 'Nanjing',
children: [
{
value: 'zhonghuamen',
label: 'Zhong Hua Men',
},
],
},
],
},
],
};
},
methods: {
onChange(value, selectedOptions) {
this.text = selectedOptions.map(o => o.label).join(', ');
},
},
};
script>
默认值通过数组的方式指定。
<template>
<a-cascader
:options="options"
@change="onChange"
:defaultValue="['zhejiang', 'hangzhou', 'xihu']"
/>
template>
<script>
export default {
data() {
return {
options: [
{
value: 'zhejiang',
label: 'Zhejiang',
children: [
{
value: 'hangzhou',
label: 'Hangzhou',
children: [
{
value: 'xihu',
label: 'West Lake',
},
],
},
],
},
{
value: 'jiangsu',
label: 'Jiangsu',
children: [
{
value: 'nanjing',
label: 'Nanjing',
children: [
{
value: 'zhonghuamen',
label: 'Zhong Hua Men',
},
],
},
],
},
],
};
},
methods: {
onChange(value) {
console.log(value);
},
},
};
script>
<template>
<a-cascader :options="options" @change="onChange" />
template>
<script>
export default {
data() {
return {
options: [
{
value: 'zhejiang',
label: 'Zhejiang',
children: [
{
value: 'hangzhou',
label: 'Hangzhou',
children: [
{
value: 'xihu',
label: 'West Lake',
},
],
},
],
},
{
value: 'jiangsu',
label: 'Jiangsu',
disabled: true,
children: [
{
value: 'nanjing',
label: 'Nanjing',
children: [
{
value: 'zhonghuamen',
label: 'Zhong Hua Men',
},
],
},
],
},
],
};
},
methods: {
onChange(value) {
console.log(value);
},
},
};
script>
<template>
<a-cascader
:options="options"
:displayRender="displayRender"
expandTrigger="hover"
@change="onChange"
placeholder="Please select"
/>
template>
<script>
export default {
data() {
return {
options: [
{
value: 'zhejiang',
label: 'Zhejiang',
children: [
{
value: 'hangzhou',
label: 'Hangzhou',
children: [
{
value: 'xihu',
label: 'West Lake',
},
],
},
],
},
{
value: 'jiangsu',
label: 'Jiangsu',
children: [
{
value: 'nanjing',
label: 'Nanjing',
children: [
{
value: 'zhonghuamen',
label: 'Zhong Hua Men',
},
],
},
],
},
],
};
},
methods: {
onChange(value) {
console.log(value);
},
displayRender({ labels }) {
return labels[labels.length - 1];
},
},
};
script>
使用 loadData
实现动态加载选项。
注意:
loadData
与showSearch
无法一起使用。
<template>
<a-cascader
:options="options"
@change="onChange"
:loadData="loadData"
placeholder="Please select"
changeOnSelect
/>
template>
<script>
export default {
data() {
return {
options: [
{
value: 'zhejiang',
label: 'Zhejiang',
isLeaf: false,
},
{
value: 'jiangsu',
label: 'Jiangsu',
isLeaf: false,
},
],
};
},
methods: {
onChange(value) {
console.log(value);
},
loadData(selectedOptions) {
const targetOption = selectedOptions[selectedOptions.length - 1];
targetOption.loading = true;
// load options lazily
setTimeout(() => {
targetOption.loading = false;
targetOption.children = [
{
label: `${targetOption.label} Dynamic 1`,
value: 'dynamic1',
},
{
label: `${targetOption.label} Dynamic 2`,
value: 'dynamic2',
},
];
this.options = [...this.options];
}, 1000);
},
},
};
script>
可以直接搜索选项并选择。
Cascader[showSearch]
暂不支持服务端搜索,更多信息见 #5547
<template>
<div>
<a-cascader size="large" :options="options" @change="onChange" /><br /><br />
<a-cascader :options="options" @change="onChange" /><br /><br />
<a-cascader size="small" :options="options" @change="onChange" /><br /><br />
div>
template>
<script>
export default {
data() {
return {
options: [
{
value: 'zhejiang',
label: 'Zhejiang',
children: [
{
value: 'hangzhou',
label: 'Hangzhou',
children: [
{
value: 'xihu',
label: 'West Lake',
},
],
},
],
},
{
value: 'jiangsu',
label: 'Jiangsu',
children: [
{
value: 'nanjing',
label: 'Nanjing',
children: [
{
value: 'zhonghuamen',
label: 'Zhong Hua Men',
},
],
},
],
},
],
};
},
methods: {
onChange(value) {
console.log(value);
},
},
};
script>
<template>
<a-cascader
:fieldNames="{ label: 'name', value: 'code', children: 'items' }"
:options="options"
@change="onChange"
placeholder="Please select"
/>
template>
<script>
const options = [
{
code: 'zhejiang',
name: 'Zhejiang',
items: [
{
code: 'hangzhou',
name: 'Hangzhou',
items: [
{
code: 'xihu',
name: 'West Lake',
},
],
},
],
},
{
code: 'jiangsu',
name: 'Jiangsu',
items: [
{
code: 'nanjing',
name: 'Nanjing',
items: [
{
code: 'zhonghuamen',
name: 'Zhong Hua Men',
},
],
},
],
},
];
export default {
data() {
return {
options,
};
},
methods: {
onChange(value) {
console.log(value);
},
},
};
script>
省市区级联。
<template>
<div>
<a-cascader
style="margin-top: 1rem"
:options="options"
@change="onChange"
placeholder="Please select"
>
<a-icon type="smile" slot="suffixIcon" class="test" />
a-cascader>
<a-cascader
suffixIcon="ab"
style="margin-top: 1rem"
:options="options"
@change="onChange"
placeholder="Please select"
/>
div>
template>
<script>
export default {
data() {
return {
options: [
{
value: 'zhejiang',
label: 'Zhejiang',
children: [
{
value: 'hangzhou',
label: 'Hangzhou',
children: [
{
value: 'xihu',
label: 'West Lake',
},
],
},
],
},
{
value: 'jiangsu',
label: 'Jiangsu',
children: [
{
value: 'nanjing',
label: 'Nanjing',
children: [
{
value: 'zhonghuamen',
label: 'Zhong Hua Men',
},
],
},
],
},
],
};
},
methods: {
onChange(value) {
console.log(value);
},
},
};
script>
参数 | 说明 | 类型 | 默认值 |
---|---|---|---|
allowClear |
是否支持清除 | boolean |
true |
autoFocus |
自动获取焦点 | boolean |
false |
changeOnSelect |
当此项为 true 时,点选每级菜单选项值都会发生变化,具体见上面的演示 | boolean |
false |
defaultValue |
默认的选中项 | string[] | number[] |
[] |
disabled |
禁用 | boolean |
false |
displayRender |
选择后展示的渲染函数,可使用 slot=“displayRender” 和 slot-scope="{labels, selectedOptions}" | ({labels, selectedOptions}) => vNode |
labels => labels.join(' / ') |
expandTrigger |
次级菜单的展开方式,可选 ‘click’ 和 'hover’ | string |
'click' |
fieldNames |
自定义 options 中 label name children 的字段 | object |
{ label: 'label', value: 'value', children: 'children' } |
getPopupContainer |
菜单渲染父节点。默认渲染到 body 上,如果你遇到菜单滚动定位问题,试试修改为滚动的区域,并相对其定位。 | Function(triggerNode) |
() => document.body |
loadData |
用于动态加载选项,无法与 showSearch 一起使用 |
(selectedOptions) => void |
- |
notFoundContent |
当下拉列表为空时显示的内容 | string |
'Not Found' |
options |
可选项数据源 | object |
- |
placeholder |
输入框占位文本 | string |
'请选择' |
popupClassName |
自定义浮层类名 | string |
- |
popupStyle |
自定义浮层样式 | object |
{} |
popupPlacement |
浮层预设位置 bottomLeft bottomRight topLeft topRight |
Enum |
bottomLeft |
popupVisible |
控制浮层显隐 | boolean |
- |
showSearch |
在选择框中显示搜索框 | boolean |
false |
size |
输入框大小,可选 large default small |
string |
default |
suffixIcon |
自定义的选择框后缀图标 | string | VNode | slot |
- |
value(v-model) |
指定选中项 | string[] | number[] |
- |
参数 | 说明 | 类型 | 默认值 |
---|---|---|---|
filter |
接收 inputValue path 两个参数,当 path 符合筛选条件时,应返回 true,反之则返回 false。 |
function(inputValue, path): boolean |
|
limit |
搜索结果展示数量 | boolean |
50 |
matchInputWidth |
搜索结果列表是否与输入框同宽 | boolean |
|
render |
用于渲染 filter 后的选项,可使用 slot=“showSearchRender” 和 slot-scope="{inputValue, path}" | boolean |
|
sort |
用于排序 filter 后的选项 | boolean |
事件名称 | 说明 | 回调参数 |
---|---|---|
change |
选择完成后的回调 | (value, selectedOptions) => void |
popupVisibleChange |
显示/隐藏浮层的回调 | (value) => void |
名称 | 描述 |
---|---|
blur() |
** 移除焦点** |
focus() |
** 获取焦点** |
注意,如果需要获得中国省市区数据,可以参考 react 组件的实现 china-division。