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

order	title
8	zh-CN en-US 搜索 Search

zh-CN

可以直接搜索选项并选择。

Cascader[showSearch] 暂不支持服务端搜索，更多信息见 #5547

en-US

Search and select options directly.

Now, Cascader[showSearch] doesn't support search on server, more info #5547

import { Cascader } from 'antd';

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

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

function filter(inputValue, path) {
  return (path.some(option => (option.label).toLowerCase().indexOf(inputValue.toLowerCase()) > -1));
}

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