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。
用于收罗一组命令操作。
Select 用于选择,而 Dropdown 是命令集合。
代码演示
import { Menu, Dropdown } from 'antd';
import { DownOutlined } from '@ant-design/icons';
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.Item danger>a danger item</Menu.Item>
</Menu>
);
ReactDOM.render(
<Dropdown overlay={menu}>
<a className="ant-dropdown-link" onClick={e => e.preventDefault()}>
Hover me <DownOutlined />
</a>
</Dropdown>,
mountNode,
);
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(
<>
<Dropdown overlay={menu} placement="bottomLeft" arrow>
<Button>bottomLeft</Button>
</Dropdown>
<Dropdown overlay={menu} placement="bottomCenter" arrow>
<Button>bottomCenter</Button>
</Dropdown>
<Dropdown overlay={menu} placement="bottomRight" arrow>
<Button>bottomRight</Button>
</Dropdown>
<br />
<Dropdown overlay={menu} placement="topLeft" arrow>
<Button>topLeft</Button>
</Dropdown>
<Dropdown overlay={menu} placement="topCenter" arrow>
<Button>topCenter</Button>
</Dropdown>
<Dropdown overlay={menu} placement="topRight" arrow>
<Button>topRight</Button>
</Dropdown>
</>,
mountNode,
);
#components-dropdown-demo-arrow .ant-btn {
margin-right: 8px;
margin-bottom: 8px;
}
.ant-row-rtl #components-dropdown-demo-arrow .ant-btn {
margin-right: 0;
margin-bottom: 8px;
margin-left: 8px;
}
import { Menu, Dropdown } from 'antd';
import { DownOutlined } from '@ant-design/icons';
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" onClick={e => e.preventDefault()}>
Click me <DownOutlined />
</a>
</Dropdown>,
mountNode,
);
import { Menu, Dropdown, Button, message, Tooltip } from 'antd';
import { DownOutlined, UserOutlined } from '@ant-design/icons';
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={<UserOutlined />}>
1st menu item
</Menu.Item>
<Menu.Item key="2" icon={<UserOutlined />}>
2nd menu item
</Menu.Item>
<Menu.Item key="3" icon={<UserOutlined />}>
3rd menu item
</Menu.Item>
</Menu>
);
ReactDOM.render(
<div id="components-dropdown-demo-dropdown-button">
<Dropdown.Button onClick={handleButtonClick} overlay={menu}>
Dropdown
</Dropdown.Button>
<Dropdown.Button overlay={menu} placement="bottomCenter" icon={<UserOutlined />}>
Dropdown
</Dropdown.Button>
<Dropdown.Button onClick={handleButtonClick} overlay={menu} disabled>
Dropdown
</Dropdown.Button>
<Dropdown.Button
overlay={menu}
buttonsRender={([leftButton, rightButton]) => [
<Tooltip title="tooltip" key="leftButton">
{leftButton}
</Tooltip>,
React.cloneElement(rightButton, { loading: true }),
]}
>
With Tooltip
</Dropdown.Button>
<Dropdown overlay={menu}>
<Button>
Button <DownOutlined />
</Button>
</Dropdown>
</div>,
mountNode,
);
#components-dropdown-demo-dropdown-button .ant-dropdown-button {
margin: 0 8px 8px 0;
}
#components-dropdown-demo-dropdown-button .ant-btn-group-rtl.ant-dropdown-button {
margin: 0 0 8px 8px;
}
import { Menu, Dropdown } from 'antd';
import { DownOutlined } from '@ant-design/icons';
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" onClick={e => e.preventDefault()}>
Hover me <DownOutlined />
</a>
</Dropdown>
);
}
}
ReactDOM.render(<OverlayVisible />, mountNode);
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(
<>
<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>
</>,
mountNode,
);
#components-dropdown-demo-placement .ant-btn {
margin-right: 8px;
margin-bottom: 8px;
}
.ant-row-rtl #components-dropdown-demo-placement .ant-btn {
margin-right: 0;
margin-bottom: 8px;
margin-left: 8px;
}
import { Menu, Dropdown } from 'antd';
import { DownOutlined } from '@ant-design/icons';
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" onClick={e => e.preventDefault()}>
Hover me <DownOutlined />
</a>
</Dropdown>,
mountNode,
);
import { Menu, Dropdown, message } from 'antd';
import { DownOutlined } from '@ant-design/icons';
const onClick = ({ 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" onClick={e => e.preventDefault()}>
Hover me, Click menu item <DownOutlined />
</a>
</Dropdown>,
mountNode,
);
API#
属性如下
参数 | 说明 | 类型 | 默认值 | 版本 |
---|---|---|---|---|
arrow | 下拉框箭头是否显示 | boolean | false | |
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 | () => Menu | - | |
overlayClassName | 下拉根元素的类名称 | string | - | |
overlayStyle | 下拉根元素的样式 | object | - | |
onVisibleChange | 菜单显示状态改变时调用,参数为 visible | function(visible) | - | |
placement | 菜单弹出位置:bottomLeft bottomCenter bottomRight topLeft topCenter topRight | string | bottomLeft | |
trigger | 触发下拉的行为, 移动端不支持 hover | Array<click |hover |contextMenu > | [hover ] | |
visible | 菜单是否显示 | boolean | - |
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>
。
Dropdown.Button#
参数 | 说明 | 类型 | 默认值 | 版本 |
---|---|---|---|---|
buttonsRender | 自定义左右两个按钮 | ([buttons: ReactNode[]]) => ReactNode | - | |
disabled | 菜单是否禁用 | boolean | - | |
icon | 右侧的 icon | ReactNode | - | |
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 visible | function | - | |
overlay | 菜单 | Menu | - | |
placement | 菜单弹出位置:bottomLeft bottomCenter bottomRight topLeft topCenter topRight | string | bottomLeft | |
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 | - |