ant-design/components/cascader/demo/showCheckedStrategy.md
dingkang 40e3d7a053
docs: Convert part demo to ts version (#35641)
* docs(badge): replace class component with hooks

* docs(button): replace class component with hooks

* docs(calendar): replace class component with hooks

* docs(card): replace class component with hooks

* docs(button): replace class component with hooks

* chore(deps): remove webpack devDependencies

* docs(cascader): replace class component with hooks

* docs(checkbox): replace class component with hooks

* docs(collapse): replace class component with hooks

* docs(comment): replace class component with hooks

* docs(descriptions): replace class component with hooks

* docs(config-provider): replace class component with hooks

* docs(date-picker): replace class component with hooks

* docs(drawer): replace class component with hooks

* docs(dropdown): replace class component with hooks

* docs(dropdown): replace class component with hooks

* docs(empty): replace class component with hooks

* docs(grid): replace class component with hooks

* docs(input): replace class component with hooks

* docs(input-number): replace class component with hooks

* docs(demo): fix lint error

* docs(layout): replace class component with hooks

* docs(list): replace class component with hooks

* docs(mentions): replace class component with hooks

* docs: fix code review issue

* docs(modal): replace class component with hooks

* docs(pagination): replace class component with hooks

* docs(popconfirm): replace class component with hooks

* docs(popover): replace class component with hooks

* docs(progress): replace class component with hooks

* docs(rate): replace class component with hooks

* docs(radio): replace class component with hooks

* docs: jsx to TS demo
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Markdown

---
order: 5.1
version: 4.20.0
title:
zh-CN: 自定义回填方式
en-US: ShowCheckedStrategy
---
## zh-CN
通过设置 `ShowCheckedStrategy` 选择回填方式。
## en-US
The way show selected item in box using `ShowCheckedStrategy`.
```tsx
import { Cascader } from 'antd';
const { SHOW_CHILD } = Cascader;
interface Option {
value: string | number;
label: string;
children?: Option[];
}
const options: Option[] = [
{
label: 'Light',
value: 'light',
children: new Array(20)
.fill(null)
.map((_, index) => ({ label: `Number ${index}`, value: index })),
},
{
label: 'Bamboo',
value: 'bamboo',
children: [
{
label: 'Little',
value: 'little',
children: [
{
label: 'Toy Fish',
value: 'fish',
},
{
label: 'Toy Cards',
value: 'cards',
},
{
label: 'Toy Bird',
value: 'bird',
},
],
},
],
},
];
const App: React.FC = () => {
const onChange = (value: string[][]) => {
console.log(value);
};
return (
<>
<Cascader
style={{ width: '100%' }}
options={options}
onChange={onChange}
multiple
maxTagCount="responsive"
showCheckedStrategy={SHOW_CHILD}
defaultValue={[
['bamboo', 'little', 'fish'],
['bamboo', 'little', 'cards'],
['bamboo', 'little', 'bird'],
]}
/>
<br />
<br />
<Cascader
style={{ width: '100%' }}
options={options}
onChange={onChange}
multiple
maxTagCount="responsive"
defaultValue={['bamboo']}
/>
</>
);
};
export default App;
```