ant-design/components/select/demo/coordinate.md
2016-02-16 14:07:09 +08:00

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# 联动
- order: 6
省市联动是典型的例子。
推荐使用 [cascader](/components/cascader/) 组件。
---
````jsx
import { Select } from 'antd';
const Option = Select.Option;
const provinceData = ['浙江', '江苏'];
const cityData = {
浙江: ['杭州', '宁波', '温州'],
江苏: ['南京', '苏州', '镇江']
};
const App = React.createClass({
getInitialState() {
return {
cities: cityData[provinceData[0]],
secondCity: cityData[provinceData[0]][0]
};
},
handleProvinceChange(value) {
this.setState({
cities: cityData[value],
secondCity: cityData[value][0]
});
},
onSecondCityChange(value) {
this.setState({
secondCity: value
});
},
render() {
const provinceOptions = provinceData.map(province => <Option key={province}>{province}</Option>);
const cityOptions = this.state.cities.map(city => <Option key={city}>{city}</Option>);
return (
<div>
<Select defaultValue={provinceData[0]} style={{ width: 90 }} onChange={this.handleProvinceChange}>
{provinceOptions}
</Select>
<Select value={this.state.secondCity} style={{ width: 90 }} onChange={this.onSecondCityChange}>
{cityOptions}
</Select>
</div>
);
}
});
ReactDOM.render(<App />, mountNode);
````