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。

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,
);