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ant-design-vue/components/cascader/index.zh-CN.md

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3.0 ready (#4523) * refactor: transfer、tooltip (#4306) * refactor(transfer): use composition api (#4135) * refactor(transfer): use composition api * fix: remove console * refactor(tooltip): use composition api (#4059) * refactor(tooltip): use composition api * chore: useConfigInject * fix: remove useless * style: format code * refactor: transfer * refactor: tooltip Co-authored-by: ajuner <106791576@qq.com> * Refactor mentions (#4341) * refactor(mentions): use compositionAPI (#4313) * refactor: mentions * refactor: mentions Co-authored-by: ajuner <106791576@qq.com> * Refactor progress (#4358) * fix: timepicker error border not show #4331 * fix(UploadDragger): fix UploadDrager no export (#4334) * refactor(switch): support customize checked value #4329 (#4332) * refactor(switch): support customize checked value #4329 * test: add test case * refactor: update props name * refactor: update ts * refactor: optimize * style: uncheckedValue to unCheckedValue * test: update snap * feat: udpate switch ts * docs: remove ie11 * fix: tree-select throw error when use slot title * fix: TypeScript definition of Table interface for typescript 4.3.5 (#4353) * fix type for typescript 4.3.5 * Update interface.ts close #4296 * fix: dropdown submenu style error #4351 close #4351 * fix(notification): 完善notification类型 (#4346) * refactor(progress): use composition API (#4355) * refactor(progress): use composition API * refactor(vc-progress): update * refactor: progress * refactor: progress * fix: timepicker error border not show #4331 * fix(UploadDragger): fix UploadDrager no export (#4334) * refactor(switch): support customize checked value #4329 (#4332) * refactor(switch): support customize checked value #4329 * test: add test case * refactor: update props name * refactor: update ts * refactor: optimize * style: uncheckedValue to unCheckedValue * test: update snap * feat: udpate switch ts * docs: remove ie11 * fix: tree-select throw error when use slot title * fix: TypeScript definition of Table interface for typescript 4.3.5 (#4353) * fix type for typescript 4.3.5 * Update interface.ts close #4296 * fix: dropdown submenu style error #4351 close #4351 * fix(notification): 完善notification类型 (#4346) * refactor(progress): use composition API (#4355) * refactor(progress): use composition API * refactor(vc-progress): update * refactor: progress * refactor: progress Co-authored-by: Jarvis <35361626+fanhaoyuan@users.noreply.github.com> Co-authored-by: John <John60676@qq.com> Co-authored-by: 艾斯特洛 <axetroy.dev@gmail.com> Co-authored-by: zanllp <qc@zanllp.cn> * docs: add changelog * refactor: tree * refactor: tree * style: lint * refactor: tree * 热factor: tree * refactor: tree * refactor: tree * refactor: tree * refactor: directory tree * refactor: tree * refactor: tree-select * refactor: tree-select * refactor: tree-select * refactor: tree-select * refactor: tree-select * style: lint format * refactor: tree-select * refactor: tree-select * refactor: tree-select * refactor: tree-select * refactor: tree-select * refactor: tree-select * fix: upload ts error * fix: update tree title render & switchIcon * test: update tree test * feat: add VirtualScroll tree * refactor: datePicker & calendar & trigger (#4522) * style: update * test: update calendar test * test: update test * test: update test * refactor: slider * feat: update slider css * refactor: slider to ts * refactor: slider to ts * perf: update default itemHeight * test: update * fix: uddate ts type * fix: update skeleton * fix: update skeleton * refactor: update vc-pagination * refactor: pagination * refactor: timeline * refactor: steps * refactor: collapse * refactor: collapse * refactor: popconfirm * refactor: popover * refactor: dropdown * doc: merge doc * chore: vite for dev (#4602) * style: js to jsx * doc: add site * style: lint * style: format ts type * doc: update * style: format code * style: format site * doc: update * style: dmeo * style: format scripts * chore: remove sub-modules * chore: update vite * site: add site build * test: update snap * doc(select): add tip (#4606) * refactor: table (#4641) * refactor: table * refactor: table * refactor: table * refactor: table * refactor: table * refactor: table * refactor: table * refactor: table * refactor: table * fix: column not pass to cell * doc: uppate table * fix: update bodyCell headerCell * doc: remove examples * refactor: table * fix: table title not work * fix: table selection * fix: table checkStrictly * refactor: table * fix: table template error * feat: table support summary * test: update snap * perf: table * docs(table): fix ajax demo (#4639) * test: update table * refactor: remove old table * doc: update table doc * doc: update doc * doc: update select * doc: update summary Co-authored-by: John <John60676@qq.com> * doc: update doc * fix: menu arrow not work * test: update * doc: add next site * style: format * doc: update * doc: update site script * fix: expand icon not fixed * feat: use renderSlot * test: update table snap * feat: confirm support reactively * feat: configProvider.config * feat: message support configprovider.config * feat: notification support configprovider.config * doc: update doc * fix: typescript compile error * style: add import eslint * doc: update demo * chore: set transpileOnly true * style: fix eslint error * test: update snap * doc: update * test: mock date * test: update snap * chore: remove gulp-typescript (#4675) * feat: V3 form (#4678) * chore: update husky * perf: update formItem * perf: useInjectFormItemContext * fix: table ts error * doc: add Customized Form Controls demo * feat: export useInjectFormItemContext * doc: update form doc * doc: update doc * doc: update doc * feat: autocomplete support option slot * doc: update * feat: add form item rest * style: remove omit.js * refactor: autocomplete * doc: add changelog to site * doc: update site anchor * doc: update doc layout * test: update table test * doc: update * chore: udpate gulp script * chore: udpate gulp script * doc: add changelog * doc: update * test: ignore some test wait vue-test-utils * fix: form id error #4582 close #4582 * doc: add select Responsive demo * doc: remove temp doc Co-authored-by: ajuner <106791576@qq.com> Co-authored-by: Jarvis <35361626+fanhaoyuan@users.noreply.github.com> Co-authored-by: John <John60676@qq.com> Co-authored-by: 艾斯特洛 <axetroy.dev@gmail.com> Co-authored-by: zanllp <qc@zanllp.cn> Co-authored-by: Amour1688 <lcz_1996@foxmail.com>
3 years ago
---
category: Components
type: 数据录入
title: Cascader
subtitle: 级联选择
cover: https://gw.alipayobjects.com/zos/alicdn/UdS8y8xyZ/Cascader.svg
---
级联选择框。
## 何时使用
- 需要从一组相关联的数据集合进行选择,例如省市区,公司层级,事物分类等。
- 从一个较大的数据集合中进行选择时,用多级分类进行分隔,方便选择。
- 比起 Select 组件,可以在同一个浮层中完成选择,有较好的体验。
## API
```html
<a-cascader :options="options" v-model:value="value" />
```
| 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 #displayRender="{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 | [Option](#option)[] | - |
| 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 \| [object](#showsearch) | 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\[] | - |
### showSearch
`showSearch` 为对象时,其中的字段:
| 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 | number \| false | 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 #showSearchRender="{inputValue, path}" | `function({inputValue, path}): VNode` | |
| sort | 用于排序 filter 后的选项 | `function(a, b, inputValue)` | |
### 事件
| 事件名称 | 说明 | 回调参数 | 版本 |
| ------------------ | ------------------- | ---------------------------------- | ---- | ----- |
| change | 选择完成后的回调 | `(value, selectedOptions) => void` | - | |
| popupVisibleChange | 显示/隐藏浮层的回调 | `(value) => void` | - | |
| search | 输入框变化时的回调 | `(value) => void` | - | 1.5.4 |
### Option
```ts
interface Option {
value: string | number;
label?: VNode;
disabled?: boolean;
children?: Option[];
}
```
## 方法
| 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](https://gist.github.com/afc163/7582f35654fd03d5be7009444345ea17)。