spec checked
MDN ARIA Progressbar Role
Documents the ARIA progressbar role, accessible names, determinate and indeterminate values, and using aria-busy on a related loading region until loading is finished.
Pattern Decisions This Source Supports
| Pattern | Supported decision | Required contract | Claim note |
|---|---|---|---|
| Infinite spinner | Flag this anti-pattern when a spinner or busy overlay can continue without a timeout, elapsed status, retry, cancel, fallback, or failure state. | The loading state is tied to a specific region, action, or object instead of freezing the entire interface without explanation. | MDN documents progressbar semantics, accessible names, indeterminate progress, determinate values, and aria-busy for related loading regions. |
| Loading spinner | Choose loading spinner when the wait is indeterminate, short, and tied to a named action or region. | The spinner appears only after the operation starts and disappears or changes state when the operation resolves, fails, is cancelled, or moves to background. | MDN supports accessible progress naming, indeterminate state, determinate values, and aria-busy on affected loading regions. |
| Progress bar | Choose progress bar when the system can report a meaningful value toward a bounded operation. | The progress bar appears only after the operation starts and is scoped to the affected file, job, card, dialog, or page region. | MDN supports accessible progressbar names, current values, min/max defaults, value text, native progress preference, and aria-busy relationships. |
Evidence Role
This source is treated as spec evidence. Use it to validate the decision rules above, not as a visual style reference.
Publisher: MDN Web Docs. Last checked: .