ant-design/components/cascader/demo/custom-dropdown.md
2022-05-21 22:14:15 +08:00

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---
order: 12
title:
zh-CN: 扩展菜单
en-US: Custom dropdown
---
## zh-CN
使用 `dropdownRender` 对下拉菜单进行自由扩展。
## en-US
Customize the dropdown menu via `dropdownRender`.
```tsx
import { Cascader, Divider } from 'antd';
import React from 'react';
interface Option {
value: string;
label: string;
children?: Option[];
}
const options: Option[] = [
{
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',
},
],
},
],
},
];
const dropdownRender = (menus: React.ReactNode) => (
<div>
{menus}
<Divider style={{ margin: 0 }} />
<div style={{ padding: 8 }}>The footer is not very short.</div>
</div>
);
const App: React.FC = () => (
<Cascader options={options} dropdownRender={dropdownRender} placeholder="Please select" />
);
export default App;
```