ant-design/components/back-top/index.en-US.md

category	type	title
Components	Other	BackTop

BackTop makes it easy to go back to the top of the page.

When To Use

• When the page content is very long.
• When you need to go back to the top very frequently in order to view the contents.

API

The distance to the bottom is set to 50px by default, which is overridable.

If you decide to use custom styles, please note the size limit: no more than 40px * 40px.

Property	Description	Type	Default
visibilityHeight	the BackTop button will not show until the scroll height reaches this value	number	400
onClick	a callback function, which can be executed when you click the button	Function	-
target	specifies the scrollable area dom node	() => HTMLElement	() => window