ant-design/components/select/demo/coordinate.md
章鱼 7fd093bd0a
docs: feat components TS demo (#34742)
* docs: add general components TS demo

* docs: add layout components TS demo

* docs: add navigation components TS demo

* docs: add data entry components TS demo

* chore(deps): add types for qs

* docs: add data display TS demo

* docs: add feedback components TS demo

* docs: add other components TS demo

* chore(deps): add types

* docs: unified demo code style

* docs: fix lint error

* docs: add demo TS type

* docs: fix demo TS type

* test: update snapshot

* docs: fix TS demo

* feat: update Rate character type

* docs: fix lint error

* feat: update Rate character type

* feat: update Rate character type
2022-05-19 09:46:26 +08:00

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Markdown

---
order: 7
title:
zh-CN: 联动
en-US: coordinate
---
## zh-CN
省市联动是典型的例子。
推荐使用 [Cascader](/components/cascader/) 组件。
## en-US
Coordinating the selection of provinces and cities is a common use case and demonstrates how selection can be coordinated.
Using the [Cascader](/components/cascader) component is strongly recommended instead as it is more flexible and capable.
```tsx
import React, { useState } from 'react';
import { Select } from 'antd';
const { Option } = Select;
const provinceData = ['Zhejiang', 'Jiangsu'];
const cityData = {
Zhejiang: ['Hangzhou', 'Ningbo', 'Wenzhou'],
Jiangsu: ['Nanjing', 'Suzhou', 'Zhenjiang'],
};
type CityName = keyof typeof cityData;
const App: React.FC = () => {
const [cities, setCities] = useState(cityData[provinceData[0] as CityName]);
const [secondCity, setSecondCity] = useState(cityData[provinceData[0] as CityName][0]);
const handleProvinceChange = (value: CityName) => {
setCities(cityData[value]);
setSecondCity(cityData[value][0]);
};
const onSecondCityChange = (value: CityName) => {
setSecondCity(value);
};
return (
<>
<Select defaultValue={provinceData[0]} style={{ width: 120 }} onChange={handleProvinceChange}>
{provinceData.map(province => (
<Option key={province}>{province}</Option>
))}
</Select>
<Select style={{ width: 120 }} value={secondCity} onChange={onSecondCityChange}>
{cities.map(city => (
<Option key={city}>{city}</Option>
))}
</Select>
</>
);
};
export default App;
```