Dropdown下拉菜单

向下弹出的列表。

何时使用#

当页面上的操作命令过多时,用此组件可以收纳操作元素。点击或移入触点,会出现一个下拉菜单。可在列表中进行选择,并执行相应的命令。

代码演示

Hover me

最简单的下拉菜单。

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import { Menu, Dropdown, Icon } from 'antd';

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 <Icon type="down" />
    </a>
  </Dropdown>,
  mountNode);
Hover me

分割线和不可用菜单项。

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import { Menu, Dropdown, Icon } from 'antd';

const menu = (
  <Menu>
    <Menu.Item key="0">
      <a target="_blank" rel="noopener noreferrer" href="http://www.alipay.com/">1st menu item</a>
    </Menu.Item>
    <Menu.Item key="1">
      <a target="_blank" rel="noopener noreferrer" href="http://www.taobao.com/">2nd menu item</a>
    </Menu.Item>
    <Menu.Divider />
    <Menu.Item key="3" disabled>3rd menu item(disabled)</Menu.Item>
  </Menu>
);

ReactDOM.render(
  <Dropdown overlay={menu}>
    <a className="ant-dropdown-link" href="#">
      Hover me <Icon type="down" />
    </a>
  </Dropdown>,
  mountNode);
Hover me, Click menu item

点击菜单项后会触发事件,用户可以通过相应的菜单项 key 进行不同的操作。

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import { Menu, Dropdown, Icon, message } from 'antd';

const onClick = function ({ key }) {
  message.info(`Click on item ${key}`);
};

const menu = (
  <Menu onClick={onClick}>
    <Menu.Item key="1">1st menu item</Menu.Item>
    <Menu.Item key="2">2nd memu item</Menu.Item>
    <Menu.Item key="3">3rd menu item</Menu.Item>
  </Menu>
);

ReactDOM.render(
  <Dropdown overlay={menu}>
    <a className="ant-dropdown-link" href="#">
      Hover me, Click menu item <Icon type="down" />
    </a>
  </Dropdown>,
  mountNode);
Cascading menu

传入的菜单里有多个层级。

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import { Menu, Dropdown, Icon } from 'antd';

const SubMenu = Menu.SubMenu;

const menu = (
  <Menu>
    <Menu.Item>1st menu item</Menu.Item>
    <Menu.Item>2nd menu item</Menu.Item>
    <SubMenu title="sub menu">
      <Menu.Item>3rd menu item</Menu.Item>
      <Menu.Item>4th menu item</Menu.Item>
    </SubMenu>
    <SubMenu title="disabled sub menu" disabled>
      <Menu.Item>5d menu item</Menu.Item>
      <Menu.Item>6th menu item</Menu.Item>
    </SubMenu>
  </Menu>
);

ReactDOM.render(
  <Dropdown overlay={menu}>
    <a className="ant-dropdown-link" href="#">
      Cascading menu <Icon type="down" />
    </a>
  </Dropdown>,
  mountNode);
Right Click on Me

默认是移入触发菜单,可以点击触发。

expand codeexpand code
import { Menu, Dropdown } from 'antd';

const menu = (
  <Menu>
    <Menu.Item key="1">1st menu item</Menu.Item>
    <Menu.Item key="2">2nd menu item</Menu.Item>
    <Menu.Item key="3">3rd menu item</Menu.Item>
  </Menu>
);

ReactDOM.render(
  <Dropdown overlay={menu} trigger={['contextMenu']}>
    <span style={{ userSelect: 'none' }}>Right Click on Me</span>
  </Dropdown>,
  mountNode);

支持 6 个弹出位置。

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import { Menu, Dropdown, Button } from 'antd';

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(
  <div>
    <Dropdown overlay={menu} placement="bottomLeft">
      <Button>bottomLeft</Button>
    </Dropdown>
    <Dropdown overlay={menu} placement="bottomCenter">
      <Button>bottomCenter</Button>
    </Dropdown>
    <Dropdown overlay={menu} placement="bottomRight">
      <Button>bottomRight</Button>
    </Dropdown>
    <br />
    <Dropdown overlay={menu} placement="topLeft">
      <Button>topLeft</Button>
    </Dropdown>
    <Dropdown overlay={menu} placement="topCenter">
      <Button>topCenter</Button>
    </Dropdown>
    <Dropdown overlay={menu} placement="topRight">
      <Button>topRight</Button>
    </Dropdown>
  </div>,
  mountNode);
#components-dropdown-demo-placement .ant-btn {
  margin-right: 8px;
  margin-bottom: 8px;
}
Click me

默认是移入触发菜单,可以点击触发。

expand codeexpand code
import { Menu, Dropdown, Icon } from 'antd';

const menu = (
  <Menu>
    <Menu.Item key="0">
      <a href="http://www.alipay.com/">1st menu item</a>
    </Menu.Item>
    <Menu.Item key="1">
      <a href="http://www.taobao.com/">2nd menu item</a>
    </Menu.Item>
    <Menu.Divider />
    <Menu.Item key="3">3rd menu item</Menu.Item>
  </Menu>
);

ReactDOM.render(
  <Dropdown overlay={menu} trigger={['click']}>
    <a className="ant-dropdown-link" href="#">
      Click me <Icon type="down" />
    </a>
  </Dropdown>,
  mountNode);

左边是按钮,右边是额外的相关功能菜单。

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import { Menu, Dropdown, Button, Icon, message } from 'antd';

function handleButtonClick(e) {
  message.info('Click on left button.');
  console.log('click left button', e);
}

function handleMenuClick(e) {
  message.info('Click on menu item.');
  console.log('click', e);
}

const menu = (
  <Menu onClick={handleMenuClick}>
    <Menu.Item key="1"><Icon type="user" />1st menu item</Menu.Item>
    <Menu.Item key="2"><Icon type="user" />2nd menu item</Menu.Item>
    <Menu.Item key="3"><Icon type="user" />3rd item</Menu.Item>
  </Menu>
);

ReactDOM.render(
  <div>
    <Dropdown.Button onClick={handleButtonClick} overlay={menu}>
      Dropdown
    </Dropdown.Button>
    <Dropdown.Button
      onClick={handleButtonClick}
      overlay={menu}
      disabled
      style={{ marginLeft: 8 }}
    >
      Dropdown
    </Dropdown.Button>
    <Dropdown overlay={menu}>
      <Button style={{ marginLeft: 8 }}>
        Button <Icon type="down" />
      </Button>
    </Dropdown>
  </div>,
  mountNode);
Hover me

默认是点击关闭菜单,可以关闭此功能。

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import { Menu, Dropdown, Icon } from 'antd';

class OverlayVisible extends React.Component {
  state = {
    visible: false,
  };

  handleMenuClick = (e) => {
    if (e.key === '3') {
      this.setState({ visible: false });
    }
  }

  handleVisibleChange = (flag) => {
    this.setState({ visible: flag });
  }

  render() {
    const menu = (
      <Menu onClick={this.handleMenuClick}>
        <Menu.Item key="1">Clicking me will not close the menu.</Menu.Item>
        <Menu.Item key="2">Clicking me will not close the menu also.</Menu.Item>
        <Menu.Item key="3">Clicking me will close the menu</Menu.Item>
      </Menu>
    );
    return (
      <Dropdown overlay={menu}
        onVisibleChange={this.handleVisibleChange}
        visible={this.state.visible}
      >
        <a className="ant-dropdown-link" href="#">
          Hover me <Icon type="down" />
        </a>
      </Dropdown>
    );
  }
}

ReactDOM.render(<OverlayVisible />, mountNode);

API#

属性如下

参数说明类型默认值
disabled菜单是否禁用boolean-
getPopupContainer菜单渲染父节点。默认渲染到 body 上,如果你遇到菜单滚动定位问题,试试修改为滚动的区域,并相对其定位。示例Function(triggerNode)() => document.body
overlay菜单Menu-
placement菜单弹出位置:bottomLeft bottomCenter bottomRight topLeft topCenter topRightStringbottomLeft
trigger触发下拉的行为Array<click|hover|contextMenu>['hover']
visible菜单是否显示boolean-
onVisibleChange菜单显示状态改变时调用,参数为 visibleFunction(visible)-

overlay 菜单使用 Menu,还包括菜单项 Menu.Item,分割线 Menu.Divider

注意: Menu.Item 必须设置唯一的 key 属性。

Dropdown 下的 Menu 默认不可选中。如果需要菜单可选中,可以指定 <Menu selectable>.

参数说明类型默认值
disabled菜单是否禁用boolean-
overlay菜单Menu-
placement菜单弹出位置:bottomLeft bottomCenter bottomRight topLeft topCenter topRightStringbottomLeft
size按钮大小,和 Button 一致string'default'
trigger触发下拉的行为Array<click|hover|contextMenu>['hover']
type按钮类型,和 Button 一致string'default'
visible菜单是否显示boolean-
onClick点击左侧按钮的回调,和 Button 一致Function-
onVisibleChange菜单显示状态改变时调用,参数为 visibleFunction-