Frustratingly, there is also an aria attribute for this, aria-disabled, that does not remove focus, and it should absolutely be added to any button implementing

Frustratingly, there is also an aria attribute for this, aria-disabled, that does not remove focus, and it should absolutely be added to any button implementing this strategy. If you're going to follow this article's advice, don't add a [data-submitting] attribute; use the aria-disabled as your selector. A custom data attribute does nothing for screenreaders or blind users who have no idea now whether a given button is disabled or not.