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

order	title
2	zh-CN en-US 可以自定义显示 Custom trigger

zh-CN

切换按钮和结果分开。

en-US

Separate trigger button and result.

import { Cascader } from 'antd';

const options = [{
  value: 'zhejiang',
  label: 'Zhejiang',
  children: [{
    value: 'hangzhou',
    label: 'Hangzhou',
  }],
}, {
  value: 'jiangsu',
  label: 'Jiangsu',
  children: [{
    value: 'nanjing',
    label: 'Nanjing',
  }],
}];

class CitySwitcher extends React.Component {
  state = {
    text: 'Unselect',
  };

  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="#">Change city</a>
        </Cascader>
      </span>
    );
  }
}

ReactDOM.render(<CitySwitcher />, mountNode);