2.2 KiB
| category | type | title | cover |
|---|---|---|---|
| Components | Navigation | Affix | https://mdn.alipayobjects.com/huamei_7uahnr/afts/img/A*YSm4RI3iOJ8AAAAAAAAAAAAADrJ8AQ/original |
Wrap Affix around another component to make it stick the viewport.
When To Use
On longer web pages, its helpful for some content to stick to the viewport. This is common for menus and actions.
Please note that Affix should not cover other content on the page, especially when the size of the viewport is small.
API
| Property | Description | Type | Default | Version |
|---|---|---|---|---|
| offsetBottom | Offset from the bottom of the viewport (in pixels) | number | - | |
| offsetTop | Offset from the top of the viewport (in pixels) | number | 0 | |
| target | Specifies the scrollable area DOM node | () => HTMLElement | () => window |
events
| Events Name | Description | Arguments | Version |
|---|---|---|---|
| change | Callback for when Affix state is changed | (affixed?: boolean) => void |
Note: Children of Affix must not have the property position: absolute, but you can set position: absolute on Affix itself:
<a-affix :style="{ position: 'absolute', top: y, left: x}">...</a-affix>
FAQ
When binding container with target in Affix, elements sometimes move out of the container.
We only listen to container scroll events for performance consideration. You can add custom listeners if you still want to, like react demo https://codesandbox.io/s/2xyj5zr85p
Related issues：#3938 #5642 #16120
When Affix is used in a horizontal scroll container, the position of the element left is incorrect.
Affix is generally only applicable to areas with one-way scrolling, and only supports usage in vertical scrolling containers. If you want to use it in a horizontal container, you can consider implementing with the native position: sticky property.