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

order	title
8	[{zh-CN 搜索} {en-US Search}]

zh-CN

可以直接搜索选项并选择。

en-US

Search and select options directly.

import { Cascader } from 'antd';

const options = [{
  value: 'zhejiang',
  label: 'Zhejiang',
  children: [{
    value: 'hangzhou',
    label: 'Hangzhou',
    children: [{
      value: 'xihu',
      label: 'West Lake',
    }],
  }],
}, {
  value: 'jiangsu',
  label: 'Jiangsu',
  children: [{
    value: 'nanjing',
    label: 'Nanjing',
    children: [{
      value: 'zhonghuamen',
      label: 'Zhong Hua men',
    }],
  }],
}];

function onChange(value, selectedOptions) {
  console.log(value, selectedOptions);
}

ReactDOM.render(
  <Cascader
    options={options}
    onChange={onChange}
    placeholder="Please select"
    showSearch
  />,
  mountNode
);