ant-design/components/cascader/demo/basic.md

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---
order: 0
title: 基本
---
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省市区级联。
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````jsx
import { Cascader } from 'antd';
const options = [{
value: 'zhejiang',
label: '浙江',
children: [{
value: 'hangzhou',
label: '杭州',
children: [{
value: 'xihu',
label: '西湖西湖西湖西湖西湖西湖',
}, {
value: 'xihu1',
label: '西湖西湖西湖西湖西湖西湖',
}, {
value: 'xihu2',
label: '西湖西湖西湖西湖西湖西湖',
}, {
value: 'xihu3',
label: '西湖西湖西湖西湖西湖西湖',
}, {
value: 'xihu4',
label: '西湖西湖西湖西湖西湖西湖',
}, {
value: 'xihu5',
label: '西湖西湖西湖西湖西湖西湖',
}, {
value: 'xihu6',
label: '西湖西湖西湖西湖西湖西湖',
}, {
value: 'xihu7',
label: '西湖西湖西湖西湖西湖西湖',
}, {
value: 'xihu8',
label: '西湖西湖西湖西湖西湖西湖',
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}],
}],
}, {
value: 'jiangsu',
label: '江苏',
children: [{
value: 'nanjing',
label: '南京',
children: [{
value: 'zhonghuamen',
label: '中华门中华门中华门中华门中华门',
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}],
}],
}];
function onChange(value) {
console.log(value);
}
ReactDOM.render(
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<Cascader options={options} onChange={onChange} placeholder="请选择地区" />
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, mountNode);
````