Loading button · Apple
An async action button that morphs from its label to a spinner while the promise runs, then to a success or error state, and announces each step.
Design · Apple2 / 20
50px iOS-style large button with the eight-spoke activity indicator stepping round.
Motion
The label shrinks away into a lone spinner, which pops into a drawn check (or cross with a shake) when the promise settles.
Accent
An async action button that morphs from its label to a spinner while the promise runs, then to a success or error state, and announces each step.
buttonloadingspinnerasyncsubmitsuccesserrorform