ant-design/components/cascader/demo/custom-trigger.md

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---
order: 1
title:
zh-CN: 可以自定义显示
en-US: Custom trigger
---
## zh-CN
切换按钮和结果分开。
## en-US
Separate trigger button and result.
````jsx
import { Cascader } from 'antd';
const options = [{
value: 'zhejiang',
label: '浙江',
children: [{
value: 'hangzhou',
label: '杭州',
}],
}, {
value: 'jiangsu',
label: '江苏',
children: [{
value: 'nanjing',
label: '南京',
}],
}];
const CitySwitcher = React.createClass({
getInitialState() {
return {
text: '未选择',
};
},
onChange(value, selectedOptions) {
this.setState({
text: selectedOptions.map(o => o.label).join(', '),
});
},
render() {
return (
<span>
{this.state.text}
&nbsp;
<Cascader options={options} onChange={this.onChange}>
<a href="#">切换城市</a>
</Cascader>
</span>
);
},
});
ReactDOM.render(<CitySwitcher />, mountNode);
````