ant-design/components/dropdown/demo/placement.md
MadCcc e5451a95cb
feat: dropdown support arrow pointing at center (#33658)
* feat: add pointAtCenter prop for dropdown

* feat: dropdown support arrow pointing at center

* chore: code clean

* chore: use getPlacements in tooltip

* feat: dropdown support 'top' and 'bottom'

* chore: update snapshot

* chore: move placements to util folder

* feat: make 'topCenter' and 'bottomCenter' in Dropdown deprecated

* test: update snapshot

* test: add test for topCenter and bottomCenter
2022-01-13 13:34:34 +08:00

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Markdown

---
order: 1
title:
zh-CN: 弹出位置
en-US: Placement
---
## zh-CN
支持 6 个弹出位置。
## en-US
Support 6 placements.
```jsx
import { Menu, Dropdown, Button, Space } from 'antd';
const menu = (
<Menu>
<Menu.Item>
<a target="_blank" rel="noopener noreferrer" href="https://www.antgroup.com">
1st menu item
</a>
</Menu.Item>
<Menu.Item>
<a target="_blank" rel="noopener noreferrer" href="https://www.aliyun.com">
2nd menu item
</a>
</Menu.Item>
<Menu.Item>
<a target="_blank" rel="noopener noreferrer" href="https://www.luohanacademy.com">
3rd menu item
</a>
</Menu.Item>
</Menu>
);
ReactDOM.render(
<Space direction="vertical">
<Space wrap>
<Dropdown overlay={menu} placement="bottomLeft">
<Button>bottomLeft</Button>
</Dropdown>
<Dropdown overlay={menu} placement="bottom">
<Button>bottom</Button>
</Dropdown>
<Dropdown overlay={menu} placement="bottomRight">
<Button>bottomRight</Button>
</Dropdown>
</Space>
<Space wrap>
<Dropdown overlay={menu} placement="topLeft">
<Button>topLeft</Button>
</Dropdown>
<Dropdown overlay={menu} placement="top">
<Button>top</Button>
</Dropdown>
<Dropdown overlay={menu} placement="topRight">
<Button>topRight</Button>
</Dropdown>
</Space>
</Space>,
mountNode,
);
```