const menu = (
  <Menu>
    <Menu.Item>
      <a target="_blank" rel="noopener noreferrer" href="http://www.alipay.com/">
        1st menu item
      </a>
    </Menu.Item>
    <Menu.Item>
      <a target="_blank" rel="noopener noreferrer" href="http://www.taobao.com/">
        2nd menu item
      </a>
    </Menu.Item>
    <Menu.Item>
      <a target="_blank" rel="noopener noreferrer" href="http://www.tmall.com/">
        3rd menu item
      </a>
    </Menu.Item>
  </Menu>
);
ReactDOM.render(
  <Dropdown overlay={menu}>
    <a className="ant-dropdown-link" href="#">
      Hover me 
    </a>
  </Dropdown>,
  mountNode,
);