sp-alert-banner

Your trial has expiredAction
text
dismissible true false
open true false
variant Neutral Info Negative

NPM 1.7.0

View Storybook
Overview API Changelog

Overview

The <sp-alert-banner> displays pressing and high-signal messages, such as system alerts. It is intended to be noticeable and prompt users to take action.

Usage

See it on NPM! How big is this package in your project?

yarn add @spectrum-web-components/alert-banner

Import the side effectful registration of <sp-alert-banner> via:

import '@spectrum-web-components/alert-banner/sp-alert-banner.js';

Anatomy

The alert dialog consists of several key parts:

Content

The message in its default slot.

<sp-alert-banner open>
    All documents in this folder have been archived
</sp-alert-banner>

Action

An optional action using slot="action":

<sp-alert-banner open>
    Your trial has expired
    <sp-button treatment="outline" variant="secondary" slot="action">
        Buy now
    </sp-button>
</sp-alert-banner>
<bd></bd>

Options

Dismissable

Use the dismissible attribute to include an icon-only close button used to dismiss the alert banner:

<sp-alert-banner open dismissible>
    All documents in this folder have been archived
</sp-alert-banner>

Variants

The <sp-alert-banner> supports three variants, neutral(default), info and negative, to convey the nature of the message:

Info

Use variant="info" for informational messages.

<sp-alert-banner open variant="info" dismissible>
    Your trial will expire in 3 days
    <sp-button treatment="outline" static-color="white" slot="action">
        Buy now
    </sp-button>
</sp-alert-banner>
 Negative

Behaviors

Alert banners should be used for system-level messages and they should be dismissed only as a result of a user action or if the internal state that triggered the alert has been resolved.

The alert can be dismissed by triggering the close button in case of a dismissible alert. It also exposes a public close method to allow consumers to close the alert programmatically.

The component dispatches a close event to announce that the alert banner has been closed. This can be prevented by using the event.preventDefault() API.

Accessibility

The <sp-alert-banner> is rendered with a role of alert to notify screen readers.

When rendering an alert that is dismissable or has actions on a page, ensure the alert is placed in a container with a role of region that includes a unique aria-label or aria-labelledby for better accessibility.

It supports keyboard interactions, including:

Key Action Tab Navigate to the next interactive element Shift + Tab Navigate to the previous interactive element Space/Enter Trigger the focused button Esc Dismiss a dismissible alert ArrowLeft/ArrowRight/ArrowUp/ArrowDown Once focus is on the alert banner, arrow keys can be used to navigate between the close button and the slotted action buttons