Placeholders
Use loading placeholders for your components or pages to indicate something may still be loading.
About
Placeholders can be used to enhance the experience of your application. They’re built only with HTML and CSS, meaning you don’t need any JavaScript to create them. You will, however, need some custom JavaScript to toggle their visibility. Their appearance, color, and sizing can be easily customized with our utility classes.
Example
In the example below, we take a typical card component and recreate it with placeholders applied to create a “loading card”. Size and proportions are the same between the two.
The use of aria-hidden="true" only indicates that the element
should be hidden to screen readers. The loading behaviour of the
placeholder depends on how authors will actually use the placeholder styles,
how they plan to update things, etc. Some JavaScript code may be needed to
swap the state of the placeholder and inform AT users of the update.
Width
You can change the width through grid column classes, width utilities, or inline styles.
Color
By default, the Placeholder uses currentColor. This can be overridden with a custom color
or utility class.
Sizing
The size of Placeholders are based on the typographic style of the parent element.
Customize them with sizing props: lg, sm, or xs.
Animation
Animate placeholders by setting the prop animation to glow or wave to better
convey the perception of something being actively loaded.