ant-design/components/dropdown/demo/sub-menu.md

order	title
6	[{zh-CN 多级菜单} {en-US Cascading menu}]

zh-CN

传入的菜单里有多个层级。

en-US

The menu has multiple levels.

import { Menu, Dropdown, Space } from 'antd';
import { DownOutlined } from '@ant-design/icons';

const { SubMenu } = Menu;

const menu = (
  <Menu
    items={[
      {
        type: 'group',
        label: 'Group title',
        children: [
          {
            key: '1',
            label: '1st menu item',
          },
          {
            key: '2',
            label: '2nd menu item',
          },
        ],
      },
      {
        key: 'sub',
        label: 'sub menu',
        children: [
          {
            key: '3',
            label: '3rd menu item',
          },
          {
            key: '4',
            label: '4th menu item',
          },
        ],
      },
      {
        label: 'disabled sub menu',
        key: 'disabled',
        disabled: true,
        children: [
          {
            key: '5',
            label: '5d menu item',
          },
          {
            key: '6',
            label: '6th menu item',
          },
        ],
      },
    ]}
  />
);

export default () => (
  <Dropdown overlay={menu}>
    <a onClick={e => e.preventDefault()}>
      <Space>
        Cascading menu
        <DownOutlined />
      </Space>
    </a>
  </Dropdown>
);