Behavior comparison
Choose Inline alert for: Explaining a form or upload failure in context. Choose Toast for: Confirming a low-risk background result.
| Dimension | Inline alertInline alert | ToastToast |
|---|---|---|
| Trigger | A validation or system condition relevant to a specific section creates the message. | A system event or completed user action creates the message; users do not open it as a destination. |
| Modality | Non-modal, persistent message within the affected context. | Non-modal, transient status message that does not take focus. |
| Placement | Inside the related form or content section, close to the source of the issue. | Overlays a viewport edge without moving the page layout. |
| Interactivity | May include recovery links or actions and remains available until resolved or explicitly dismissed. | May offer one limited undo or dismiss action; never holds an essential decision. |
| Focus | The message does not steal focus on routine updates; failed submission may focus a summary or first invalid control deliberately. | The toast never steals focus on arrival; an optional action becomes reachable without disrupting the current task. |
| Dismissal | It remains until the condition resolves; a close control exists only when hiding the message cannot conceal an unresolved risk. | It expires after sufficient time, pauses for interaction, and can be dismissed explicitly without requiring action. |
| Accessible role | status, alert, or no live role according to urgency and focus context | status for polite success updates |
| Use case | Explaining a form or upload failure in context | Confirming a low-risk background result |
| Mobile behavior | Use the container width near the affected content instead of floating over it. | Stay clear of system chrome, safe areas, and the keyboard; keep copy and actions brief. |