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---
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order: 0
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title: 默认值
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---
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默认值通过数组的方式指定。
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````jsx
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import { Cascader } from 'antd';
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const options = [{
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value: 'zhejiang',
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label: '浙江',
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children: [{
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value: 'hangzhou',
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label: '杭州',
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children: [{
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value: 'xihu',
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label: '西湖',
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}],
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}],
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}, {
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value: 'jiangsu',
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label: '江苏',
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children: [{
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value: 'nanjing',
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label: '南京',
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children: [{
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value: 'zhonghuamen',
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label: '中华门',
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}],
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}],
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}];
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function onChange(value) {
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console.log(value);
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}
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ReactDOM.render(
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<Cascader defaultValue={['zhejiang', 'hangzhou', 'xihu']} options={options} onChange={onChange} />
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, mountNode);
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````
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