shadcn.io is an independent project built on shadcn/ui
The default button turns the click off and shows a spinner in front of Loading. A spinner on a button that still clicks will fire the request twice.
Use it for Save or Submit from the moment you send until you get an answer. If the wait is the whole page, a Spinner outside the button is clearer. In React, Base UI leaves the button disabled only while you keep it disabled.
Installation
Anatomy
Usage
<Button disabled>
<Spinner data-icon="inline-start" />
Loading
</Button>FAQ
Does this demo use isLoading?
No. It passes disabled, renders a Spinner with data-icon="inline-start", and keeps the word Loading. This one leaves variant off, so the primary fill stays while it runs.
When would I use isLoading instead?
isLoading hides the label visually, centers a spinner, keeps the button's width, sets aria-busy, and disables the button. Use this demo's pattern when the word should stay visible beside the spinner.
Why is the button disabled?
So a second click can't start the request again. You set disabled yourself here. isLoading does that for you. This demo doesn't.
Can the label say something other than Loading?
Yes. The children after the spinner are ordinary text. Saving, or Deleting 3 items, is fine. The demo says Loading so the state is obvious.
API Reference
Button
Sets disabled. The rest is on the Button page.
Spinner
Sets data-icon="inline-start". The rest is on the Spinner page.
