# Announcement bar

A React component in [Beamline](https://beamline.io/)'s [Feedback](https://beamline.io/components/feedback) category. Live demo: https://beamline.io/components/announcement-bar

A banner across the top for news and offers: messages take turns, a countdown ticks, and dismissing folds it away and can remember it.

## Use it for

- Site-wide news, offers and deadlines.

## Not for

- Errors ([alert](https://beamline.io/components/alert)).
- Personal notifications ([notification-center](https://beamline.io/components/notification-center)).

## Anatomy

- previous / next
- message
- countdown
- action
- dismiss

## States

- rotating
- paused
- dismissed

## Keyboard

- Tab to arrows, action and dismiss

## Motion

Messages slide 12 px and fade over 280 ms; the bar folds by height.

## Props

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `messages` | `{ id, message, action?, countdown? }[]` | — |  |
| `id` | `string (remembers dismissal)` | — |  |
| `open / index` | `controlled or not` | — |  |
| `interval / autoPlay / controls / dismissible / tone` | `mixed` | — |  |
| `style / ref` | `CSSProperties / native Ref` | — |  |
| `classNames` | `AnnouncementBarClassNames` | — |  |

## Dependencies

`lucide-react`, `motion`

## Import

```tsx
import { AnnouncementBar } from "@/components/announcement-bar/announcement-bar";
```

## Get it

Announcement bar is part of Beamline: 190 React components and screens your coding agent (Claude Code, Codex, Cursor or any MCP client) installs into your app through Beamline's MCP server, as a ready-built package or as plain React source you can change. $49 one payment (regular $200), no subscription, a year of updates, one licence for your whole team. [Get Beamline](https://beamline.io/checkout?pack=complete) · [Connect your agent](https://beamline.io/connect)

## More in Feedback

- [Alert](https://beamline.io/components/alert): A message that stays until it is dealt with: what happened, what to do, an action; danger and warning are announced; dismissing folds its height away.
- [Empty state](https://beamline.io/components/empty-state): What a place will hold and the first step to fill it, instead of a blank; a compact size for panels and filtered tables.
- [Notification centre](https://beamline.io/components/notification-center): Updates that wait to be read: a bell with the unread count opens All / Unread, new and earlier groups, and per item mark read or dismiss.
- [Progress](https://beamline.io/components/progress): How much of a known task is done, or a moving bar when the length is unknown, with an optional label and value.
- [Skeleton](https://beamline.io/components/skeleton): Holds the shape of content while it loads, then crossfades into it, so nothing jumps.
- [Spinner](https://beamline.io/components/spinner): A ring that spins while work runs and closes into a drawn check or cross when it ends.
- [Usage meter](https://beamline.io/components/usage-meter): An allowance and what fills it: one bar split by source, the room left, a warning near the limit and the overflow in its own red well past a notch at the…