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