Skeleton

Anatomy

1. Shape Skeleton: Represents graphical elements such as avatars, icons, and small Images.
2. Header Skeleton: Represent headings and sub-headings.
3. Text Skeleton: Represent paragraph and body text.

Usage Guidance

• A Skeleton should provide a close representation of the ultimate page layout and content once loaded.
• Use motion within the Skeleton to reinforce that the page is loading behind the scenes.
• Ideal for pages that require longer initial load times.
• Use for pages where all content loads at the same time.
• Meant to be used specifically on a white background.

When to Use

• Use Skeleton if the visual layout/format of the content being loaded is known ahead of time.
• Use specifically on pages where all or a majority of the page will be taking time to load.

When to Use Something Else

• If the visual layout/format of the content being loaded is unknown; or you need to indicate processing or that change will occur on the page (rather than loading UI elements), consider using a Loading Animation instead.

Examples

Basic Example

Skeleton includes a container Skeleton component and the following subcomponents: Skeleton.Header, Skeleton.Text, and Skeleton.Shape. Each subcomponent can be used as a placeholder for a particular type of content.

Here's an example of how you might compose Skeleton components (along with non-Skeleton components such as Box and Flex) to create a loading placeholder for a piece of content comprised of an icon, a heading, and some text.

And here's an example that simulates how that Skeleton might work in practice.

Press the Simulate Loading button to simulate the loading of the content (customize the loading time using the Load Time field), or check the Loading check box to force the Skeleton to display.

Color

All Skeleton subcomponents accept a backgroundColor prop which can be used to specify the color of the subcomponent. This is generally only recommended to be used for dark or gray backgrounds to ensure the Skeleton components are visible.

Component API

Skeleton

Usage

Skeleton subcomponents must be wrapped by the Skeleton container component.

<Skeleton>
  <Skeleton.Header />
  <Skeleton.Text />
</Skeleton>

Skeleton places its children in a container element with aria-hidden set to true and announces itself using a visually hidden element.

Props

Undocumented props are spread to the outermost element rendered by Skeleton.

Skeleton.Header

Usage

Skeleton.Header renders a placeholder for header content such as headings.

Props

Undocumented props are spread to the outermost element rendered by Skeleton.Header.

Skeleton.Text

Usage

Skeleton.Text renders a placeholder for text content such as paragraphs. Each placeholder line has a width of 100% and a fixed height of 21px, with the last line having a width of 60% if there are multiple lines.

Props

Undocumented props are spread to the outermost element rendered by Skeleton.Text.

Skeleton.Shape

Usage

Skeleton.Shape renders a placeholder for graphic elements such as icons, avatars and small images. Set the height, width, and borderRadius props of the Skeleton.Shape to create various rectangular and circular shapes.

Props

Undocumented props are spread to the outermost element rendered by Skeleton.Shape.

Accessibility Guidelines

• A Skeleton should announce to users using a screen reader that content or a page is being loaded.

Content Guidelines

• Though the Skeleton component does not use actual content, the Header Skeleton and the Text Skeleton elements should be used as though they are actual content.
• The Header Skeleton will represent headings and sub-headings while the Text Skeleton will represent paragraph or body text.