Notification

Theme Variants
Duration
Position
Stacking
Size
Interactive Elements
Icons and Other Rich Formatting
Static Helper
Best Practices
Related Components

Notifications are used to provide feedback to the user. They communicate information about activities, processes, and events in the application.

Open in a
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import { html, LitElement } from 'lit';
import '@vaadin/notification';
import { applyTheme } from 'Frontend/generated/theme';

export class Example extends LitElement {
  protected override createRenderRoot() {
    const root = super.createRenderRoot();
    // Apply custom theme (only supported if your app uses one)
    applyTheme(root);
    return root;
  }

  protected override render() {
    return html`
      <vaadin-notification-card slot="middle">
        Financial report generated
      </vaadin-notification-card>
    `;
  }
}

Open in a
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const notification = Notification.show('Financial report generated', {
  position: 'middle',
});

Theme Variants

Success

The success theme variant can be used to display success messages, such as when a task or operation is completed.

Open in a
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import { html, LitElement } from 'lit';
import '@vaadin/notification';
import { applyTheme } from 'Frontend/generated/theme';

export class Example extends LitElement {
  protected override createRenderRoot() {
    const root = super.createRenderRoot();
    // Apply custom theme (only supported if your app uses one)
    applyTheme(root);
    return root;
  }

  protected override render() {
    return html`
      <vaadin-notification-card theme="success" slot="middle">
        Application submitted!
      </vaadin-notification-card>
    `;
  }
}

Open in a
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const notification = Notification.show('Application submitted!', {
  position: 'middle',
});
notification.setAttribute('theme', 'success');

Successful operations shouldn’t routinely be declared using notifications, as these can be more distracting than useful for the user. Use success notifications only for operations whose successful completion may otherwise be difficult to discern.

Error

The error theme variant can be used to display alerts, failures, or warnings.

Open in a
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import { html, LitElement } from 'lit';
import '@vaadin/button';
import '@vaadin/horizontal-layout';
import '@vaadin/icon';
import '@vaadin/notification';
import '@vaadin/vaadin-lumo-styles/vaadin-iconset';
import { applyTheme } from 'Frontend/generated/theme';

export class Example extends LitElement {
  protected override createRenderRoot() {
    const root = super.createRenderRoot();
    // Apply custom theme (only supported if your app uses one)
    applyTheme(root);
    return root;
  }

  protected override render() {
    return html`
      <vaadin-notification-card theme="error" slot="middle">
        <vaadin-horizontal-layout theme="spacing" style="align-items: center;">
          <div>Failed to generate report</div>
          <vaadin-button theme="tertiary-inline">
            <vaadin-icon icon="lumo:cross"></vaadin-icon>
          </vaadin-button>
        </vaadin-horizontal-layout>
      </vaadin-notification-card>
    `;
  }
}

Open in a
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<!-- The duration is set to 0-sec to prevent the notification from auto-close. -->
<vaadin-notification
  theme="error"
  duration="0"
  position="middle"
  .opened="${this.notificationOpened}"
  @opened-changed="${(e: NotificationOpenedChangedEvent) => {
    this.notificationOpened = e.detail.value;
  }}"
  ${notificationRenderer(this.renderer, [])}
></vaadin-notification>

...

renderer: NotificationLitRenderer = () => html`
  <vaadin-horizontal-layout theme="spacing" style="align-items: center;">
    <div>Failed to generate report</div>
    <vaadin-button theme="tertiary-inline" @click="${this.close}" aria-label="Close">
      <vaadin-icon icon="lumo:cross"></vaadin-icon>
    </vaadin-button>
  </vaadin-horizontal-layout>
`;

Error notifications should be persistent, and provide the user with a button that closes the notification and/or allows the user to take appropriate action.

Notifications are non-modal and can be ignored, making them inappropriate for displaying unexpected technical errors that prevent the application from functioning, or situations that require immediate user action. Use a modal Dialog in such situations.

Primary

The primary theme variant can be used for important informational messages and/or to draw extra attention to a notification.

Open in a
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import { html, LitElement } from 'lit';
import '@vaadin/notification';
import { applyTheme } from 'Frontend/generated/theme';

export class Example extends LitElement {
  protected override createRenderRoot() {
    const root = super.createRenderRoot();
    // Apply custom theme (only supported if your app uses one)
    applyTheme(root);
    return root;
  }

  protected override render() {
    return html`
      <vaadin-notification-card theme="primary" slot="middle">
        New project plan available
      </vaadin-notification-card>
    `;
  }
}

Open in a
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const notification = Notification.show('New project plan available', {
  position: 'middle',
});
notification.setAttribute('theme', 'primary');

Contrast

A high-contrast version that improves legibility and distinguishes the notification from the rest of the UI.

Open in a
new tab
import { html, LitElement } from 'lit';
import '@vaadin/notification';
import { applyTheme } from 'Frontend/generated/theme';

export class Example extends LitElement {
  protected override createRenderRoot() {
    const root = super.createRenderRoot();
    // Apply custom theme (only supported if your app uses one)
    applyTheme(root);
    return root;
  }

  protected override render() {
    return html`
      <vaadin-notification-card theme="contrast" slot="middle">
        5 tasks deleted
      </vaadin-notification-card>
    `;
  }
}

Open in a
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const notification = Notification.show('5 tasks deleted', {
  position: 'middle',
});
notification.setAttribute('theme', 'contrast');

Duration

By default, notifications stay on-screen for 5 seconds. The duration is in milliseconds, and should be based on content and importance:

Use short durations for notifications that have:

short text content
lesser importance (for example, operations that finished without errors)
no interactive elements

Use longer durations for notifications that have:

longer text content
higher importance (for example, errors)
interactive elements (for example, links or "undo" actions)

A duration of at least 5 seconds is recommended to ensure that the user has a chance to see and understand the notification.

Persistent Notifications

Setting the duration to zero disables auto-closing, keeping the notification visible until explicitly dismissed by the user. This should be used for notifications that provide vital information to the user, such as errors. Persistent notifications should contain a Button that closes the notification and/or allows the user to take appropriate action.

Less-important notifications shouldn’t be persistent, and instead disappear automatically after an appropriate delay.

Position

Notifications can be positioned in the viewport in seven non-stretched positions, or stretched across the top or bottom:

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Use the position attribute in HTML templates, for example <vaadin-notification position="top-end"></vaadin-notification>.

protected override render() {
  return html`
    <vaadin-button @click="${this.show}">top-stretch</vaadin-button>
    <vaadin-button @click="${this.show}">top-start</vaadin-button>
    <vaadin-button @click="${this.show}">top-center</vaadin-button>
    <vaadin-button @click="${this.show}">top-end</vaadin-button>
    <vaadin-button @click="${this.show}">middle</vaadin-button>
    <vaadin-button @click="${this.show}">bottom-start</vaadin-button>
    <vaadin-button @click="${this.show}">bottom-center</vaadin-button>
    <vaadin-button @click="${this.show}">bottom-end</vaadin-button>
    <vaadin-button @click="${this.show}">bottom-stretch</vaadin-button>
  `;
}

show(event: MouseEvent) {
  // Use the button label as the location
  const position = (event.target as HTMLElement).textContent as NotificationPosition;

  Notification.show(position, { position });
}

Recommendations

Top End or Bottom Start are recommended for most notifications, as these are unobtrusive, but still noticeable.
Middle is the most disruptive position, and should be used only for important notifications, such as errors.
Bottom End is the least obtrusive position, but can go unnoticed.
Stretch notifications, which span the full width of the viewport, are more disruptive, and should be reserved for important notifications whose contents require more space.
Applications with a notification button or drop-down in the header or footer should position notifications to appear in the same part of the screen.
For a consistent user experience, use one or two positions throughout the application.
Avoid using positions that may obstruct important parts of the UI, such as navigation.

Note

The Flow styling issue

The Flow notification component renders rich content via an intermediate <flow-component-renderer> element. This can prevent notification content from using the full width when using top stretch or bottom stretch positioning. To work around this issue, add the following CSS rule to a global style sheet:

vaadin-notification-card flow-component-renderer,
vaadin-notification-card flow-component-renderer > div {
  display: contents;
}

See Vaadin Flow Components issue 1876.

Stacking

Multiple simultaneously displayed notifications are stacked vertically, depending on their positioning:

When using the bottom half of the screen as the position, a new notification appears below the older notifications.
With the position set to the top half, a new notification appears above the existing notifications.

Size

The notification card is automatically sized based on its content.

In large viewports, the card’s maximum width is one-third of the viewport.
In small viewports, the card always takes up the entire width of the viewport.

Interactive Elements

Notifications can contain interactive content, such as Buttons or links that allow the user to perform related actions.

For example, if an operation fails, the error notification could offer the user the opportunity to try again. Or it could contain a link to a view that allows the user to resolve the problem.

Open in a
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import { html, LitElement } from 'lit';
import '@vaadin/button';
import '@vaadin/horizontal-layout';
import '@vaadin/icon';
import '@vaadin/notification';
import '@vaadin/vaadin-lumo-styles/vaadin-iconset';
import { applyTheme } from 'Frontend/generated/theme';

export class Example extends LitElement {
  protected override createRenderRoot() {
    const root = super.createRenderRoot();
    // Apply custom theme (only supported if your app uses one)
    applyTheme(root);
    return root;
  }

  protected override render() {
    return html`
      <vaadin-notification-card theme="error" slot="middle">
        <vaadin-horizontal-layout theme="spacing" style="align-items: center;">
          <div>Failed to generate report</div>
          <vaadin-button theme="tertiary-inline" style="margin-left: var(--lumo-space-xl);">
            Retry
          </vaadin-button>
          <vaadin-button theme="tertiary-inline" aria-label="Close">
            <vaadin-icon icon="lumo:cross"></vaadin-icon>
          </vaadin-button>
        </vaadin-horizontal-layout>
      </vaadin-notification-card>
    `;
  }
}

Open in a
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<!-- The duration is set to 0-sec to prevent the notification from auto-close. -->
<vaadin-notification
  theme="error"
  duration="0"
  position="middle"
  .opened="${this.notificationOpened}"
  @opened-changed="${(e: NotificationOpenedChangedEvent) => {
    this.notificationOpened = e.detail.value;
  }}"
  ${notificationRenderer(this.renderer, [])}
></vaadin-notification>

...

renderer: NotificationLitRenderer = () => html`
  <vaadin-horizontal-layout theme="spacing" style="align-items: center;">
    <div>Failed to generate report</div>
    <vaadin-button
      theme="tertiary-inline"
      style="margin-left: var(--lumo-space-xl);"
      @click="${this.close}"
    >
      Retry
    </vaadin-button>
    <vaadin-button theme="tertiary-inline icon" @click="${this.close}" aria-label="Close">
      <vaadin-icon icon="lumo:cross"></vaadin-icon>
    </vaadin-button>
  </vaadin-horizontal-layout>
`;

In situations where the user might want to revert an action, display an "undo" button.

Open in a
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import { html, LitElement } from 'lit';
import '@vaadin/button';
import '@vaadin/horizontal-layout';
import '@vaadin/icon';
import '@vaadin/notification';
import '@vaadin/vaadin-lumo-styles/vaadin-iconset';
import { applyTheme } from 'Frontend/generated/theme';

export class Example extends LitElement {
  protected override createRenderRoot() {
    const root = super.createRenderRoot();
    // Apply custom theme (only supported if your app uses one)
    applyTheme(root);
    return root;
  }

  protected override render() {
    return html`
      <vaadin-notification-card theme="contrast" slot="middle">
        <vaadin-horizontal-layout theme="spacing" style="align-items: center;">
          <div>5 tasks deleted</div>
          <vaadin-button theme="tertiary-inline" style="margin-left: var(--lumo-space-xl);">
            Undo
          </vaadin-button>
          <vaadin-button theme="tertiary-inline" aria-label="Close">
            <vaadin-icon icon="lumo:cross"></vaadin-icon>
          </vaadin-button>
        </vaadin-horizontal-layout>
      </vaadin-notification-card>
    `;
  }
}

Open in a
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<vaadin-notification
  theme="contrast"
  duration="10000"
  position="middle"
  .opened="${this.notificationOpened}"
  @opened-changed="${(e: NotificationOpenedChangedEvent) => {
    this.notificationOpened = e.detail.value;
  }}"
  ${notificationRenderer(this.renderer, [])}
></vaadin-notification>

...

renderer: NotificationLitRenderer = () => html`
  <vaadin-horizontal-layout theme="spacing" style="align-items: center;">
    <div>5 tasks deleted</div>
    <vaadin-button
      theme="tertiary-inline"
      style="margin-left: var(--lumo-space-xl);"
      @click="${this.close}"
    >
      Undo
    </vaadin-button>
    <vaadin-button theme="tertiary-inline" aria-label="Close" @click="${this.close}">
      <vaadin-icon icon="lumo:cross"></vaadin-icon>
    </vaadin-button>
  </vaadin-horizontal-layout>
`;

Notifications can also contain links to relevant information.

Open in a
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import { html, LitElement } from 'lit';
import '@vaadin/button';
import '@vaadin/horizontal-layout';
import '@vaadin/icon';
import '@vaadin/notification';
import '@vaadin/vaadin-lumo-styles/vaadin-iconset';
import { applyTheme } from 'Frontend/generated/theme';

export class Example extends LitElement {
  protected override createRenderRoot() {
    const root = super.createRenderRoot();
    // Apply custom theme (only supported if your app uses one)
    applyTheme(root);
    return root;
  }

  protected override render() {
    return html`
      <vaadin-notification-card slot="middle">
        <vaadin-horizontal-layout theme="spacing" style="align-items: center;">
          <div>Jason Bailey mentioned you in <a href="#">Project Q4</a></div>
          <vaadin-button theme="tertiary-inline">
            <vaadin-icon icon="lumo:cross"></vaadin-icon>
          </vaadin-button>
        </vaadin-horizontal-layout>
      </vaadin-notification-card>
    `;
  }
}

Open in a
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<!-- The duration is set to 0-sec to prevent the notification from auto-close. -->
<vaadin-notification
  duration="0"
  position="middle"
  .opened="${this.notificationOpened}"
  @opened-changed="${(e: NotificationOpenedChangedEvent) => {
    this.notificationOpened = e.detail.value;
  }}"
  ${notificationRenderer(this.renderer, [])}
></vaadin-notification>

...

renderer: NotificationLitRenderer = () => html`
  <vaadin-horizontal-layout theme="spacing" style="align-items: center;">
    <div>Jason Bailey mentioned you in <a href="#">Project Q4</a></div>
    <vaadin-button theme="tertiary-inline" aria-label="Close" @click="${this.close}">
      <vaadin-icon icon="lumo:cross"></vaadin-icon>
    </vaadin-button>
  </vaadin-horizontal-layout>
`;

Making Interactive Elements Keyboard-Accessible

Take care to ensure that keyboard-only users can access interactive elements in notifications:

Make the notification persistent, to prevent it from disappearing before the user has had a chance to interact with it.
Provide a keyboard shortcut, either to trigger the action itself, or to move focus to the notification card in cases where multiple interactive elements are present.
Make the shortcut discoverable, for example by displaying it as part of the notification’s content.

Open in a
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import { html, LitElement } from 'lit';
import '@vaadin/button';
import '@vaadin/horizontal-layout';
import '@vaadin/notification';
import { applyTheme } from 'Frontend/generated/theme';

const isMac = /Macintosh|MacIntel|MacPPC|Mac68K/.test(window.navigator.platform);

export class Example extends LitElement {
  protected override createRenderRoot() {
    const root = super.createRenderRoot();
    // Apply custom theme (only supported if your app uses one)
    applyTheme(root);
    return root;
  }

  protected override render() {
    return html`
      <vaadin-notification-card theme="contrast" slot="middle">
        <vaadin-horizontal-layout style="align-items: center;">
          <div>5 tasks deleted</div>
          <vaadin-button theme="primary" style="margin-left: var(--lumo-space-xl);">
            Undo ${isMac ? '⌘' : 'Ctrl-'}Z
          </vaadin-button>
        </vaadin-horizontal-layout>
      </vaadin-notification-card>
    `;
  }
}

Open in a
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protected override render() {
  return html`
    <vaadin-notification
      theme="contrast"
      duration="10000"
      position="middle"
      .opened="${this.notificationOpened}"
      @opened-changed="${(e: NotificationOpenedChangedEvent) => {
        this.notificationOpened = e.detail.value;
      }}"
      ${notificationRenderer(this.renderer, [])}
    ></vaadin-notification>
  `;
}

renderer: NotificationLitRenderer = () => html`
  <vaadin-horizontal-layout style="align-items: center;">
    <div>5 tasks deleted</div>
    <vaadin-button
      style="margin-left: var(--lumo-space-xl);"
      theme="primary"
      @click="${this.close}"
    >
      Undo
      <!-- Ideally, this should be hidden if the
               device does not have a physical keyboard -->
      ${this.isMac ? '⌘' : 'Ctrl-'}Z
    </vaadin-button>
  </vaadin-horizontal-layout>
`;

connectedCallback() {
  super.connectedCallback();

  document.addEventListener('keydown', this.onKeyDown);
}

disconnectedCallback() {
  super.disconnectedCallback();

  document.removeEventListener('keydown', this.onKeyDown);
}

onKeyDown = (event: KeyboardEvent) => {
  if (this.notificationOpened && (event.metaKey || event.ctrlKey) && event.key === 'z') {
    // Handle your custom undo logic here
    // Avoid triggering the native undo action
    event.preventDefault();
    this.close();
  }
};

Icons and Other Rich Formatting

Icons and other content formatting can be used to provide information and helpful visual cues, for example to make errors and success notifications easier to distinguish for users with color blindness.

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import { html, LitElement } from 'lit';
import { customElement } from 'lit/decorators.js';
import '@vaadin/avatar';
import '@vaadin/button';
import '@vaadin/icon';
import '@vaadin/icons';
import '@vaadin/notification';
import '@vaadin/vaadin-lumo-styles/vaadin-iconset';
import { applyTheme } from 'Frontend/generated/theme';

@customElement('notification-rich-preview')
export class Example extends LitElement {
  protected override createRenderRoot() {
    const root = super.createRenderRoot();
    // Apply custom theme (only supported if your app uses one)
    applyTheme(root);
    return root;
  }

  protected override render() {
    return html`
      <vaadin-notification-card theme="success" slot="middle">
        <vaadin-horizontal-layout theme="spacing" style="align-items: center">
          <vaadin-icon icon="vaadin:check-circle"></vaadin-icon>
          <div>Application submitted!</div>
          <vaadin-button style="margin: 0 0 0 var(--lumo-space-l)">View</vaadin-button>
          <vaadin-button theme="tertiary-inline">
            <vaadin-icon icon="lumo:cross"></vaadin-icon>
          </vaadin-button>
        </vaadin-horizontal-layout>
      </vaadin-notification-card>

      <vaadin-notification-card theme="error" slot="middle">
        <vaadin-horizontal-layout theme="spacing" style="align-items: center">
          <vaadin-icon icon="vaadin:warning"></vaadin-icon>
          <div>Failed to generate report</div>
          <vaadin-button style="margin: 0 0 0 var(--lumo-space-l)">Retry</vaadin-button>
          <vaadin-button theme="tertiary-inline">
            <vaadin-icon icon="lumo:cross"></vaadin-icon>
          </vaadin-button>
        </vaadin-horizontal-layout>
      </vaadin-notification-card>

      <vaadin-notification-card slot="middle">
        <vaadin-horizontal-layout theme="spacing" style="align-items: center">
          <vaadin-avatar name="Jason Bailey"></vaadin-avatar>
          <div><b>Jason Bailey</b> mentioned you in <a href="#">Project Q4</a></div>
          <vaadin-button theme="tertiary-inline">
            <vaadin-icon icon="lumo:cross"></vaadin-icon>
          </vaadin-button>
        </vaadin-horizontal-layout>
      </vaadin-notification-card>

      <vaadin-notification-card slot="middle">
        <vaadin-horizontal-layout theme="spacing" style="align-items: center">
          <vaadin-icon
            icon="vaadin:check-circle"
            style="color: var(--lumo-success-color)"
          ></vaadin-icon>
          <div>
            <b style="color: var(--lumo-success-text-color);">Upload successful</b>
            <div
              style="font-size: var(--lumo-font-size-s); color: var(--lumo-secondary-text-color);"
            >
              <b>Financials.xlsx</b> is now available in <a href="#">Documents</a>
            </div>
          </div>
          <vaadin-button theme="tertiary-inline">
            <vaadin-icon icon="lumo:cross"></vaadin-icon>
          </vaadin-button>
        </vaadin-horizontal-layout>
      </vaadin-notification-card>
    `;
  }
}

Open in a
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<vaadin-notification
  ${notificationRenderer(
    (notification) => html`
      <vaadin-horizontal-layout theme="spacing" style="align-items: center">
        <vaadin-icon icon="vaadin:check-circle"></vaadin-icon>
        <div>Application submitted!</div>
        <vaadin-button
          style="margin: 0 0 0 var(--lumo-space-l)"
          @click="${() => notification.close()}"
        >
          View
        </vaadin-button>
        <vaadin-button
          theme="tertiary-inline"
          @click="${() => notification.close()}"
          aria-label="Close"
        >
          <vaadin-icon icon="lumo:cross"></vaadin-icon>
        </vaadin-button>
      </vaadin-horizontal-layout>
    `,
    []
  )}
  theme="success"
  position="middle"
></vaadin-notification>

<vaadin-notification
  ${notificationRenderer(
    (notification) => html`
      <vaadin-horizontal-layout theme="spacing" style="align-items: center">
        <vaadin-icon icon="vaadin:warning"></vaadin-icon>
        <div>Failed to generate report</div>
        <vaadin-button
          style="margin: 0 0 0 var(--lumo-space-l)"
          @click="${() => notification.close()}"
        >
          Retry
        </vaadin-button>
        <vaadin-button
          theme="tertiary-inline"
          @click="${() => notification.close()}"
          aria-label="Close"
        >
          <vaadin-icon icon="lumo:cross"></vaadin-icon>
        </vaadin-button>
      </vaadin-horizontal-layout>
    `,
    []
  )}
  theme="error"
  position="middle"
></vaadin-notification>

<vaadin-notification
  ${notificationRenderer(
    (notification) => html`
      <vaadin-horizontal-layout theme="spacing" style="align-items: center">
        <vaadin-avatar name="Jason Bailey"></vaadin-avatar>
        <div><b>Jason Bailey</b> mentioned you in <a href="#">Project Q4</a></div>
        <vaadin-button
          theme="tertiary-inline"
          @click="${() => notification.close()}"
          aria-label="Close"
        >
          <vaadin-icon icon="lumo:cross"></vaadin-icon>
        </vaadin-button>
      </vaadin-horizontal-layout>
    `,
    []
  )}
  position="middle"
></vaadin-notification>

<vaadin-notification
  ${notificationRenderer(
    (notification) => html`
      <vaadin-horizontal-layout theme="spacing" style="align-items: center">
        <vaadin-icon
          icon="vaadin:check-circle"
          style="color: var(--lumo-success-color)"
        ></vaadin-icon>
        <div>
          <b style="color: var(--lumo-success-text-color);">Upload successful</b>
          <div
            style="font-size: var(--lumo-font-size-s); color: var(--lumo-secondary-text-color)"
          >
            <b>Financials.xlsx</b> is now available in <a href="#">Documents</a>
          </div>
        </div>
        <vaadin-button
          theme="tertiary-inline"
          @click="${() => notification.close()}"
          aria-label="Close"
        >
          <vaadin-icon icon="lumo:cross"></vaadin-icon>
        </vaadin-button>
      </vaadin-horizontal-layout>
    `,
    []
  )}
  position="middle"
></vaadin-notification>

Static Helper

For simple, one-off notifications, it’s convenient to use the static show() helper method. The helper manages the notification’s lifecycle, and adds and removes it from the DOM automatically.

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// Show a simple text-based notification
Notification.show('Financial report generated', {
  position: 'middle',
});
// Show a notification with markup using a Lit template
Notification.show(
  html`
    <b>@John:</b>
    &nbsp;
    <span>
      How about lunch at
      <span style="color: var(--lumo-primary-text-color)">12:30pm</span>?
    </span>
  `,
  {
    position: 'middle',
  }
);

Best Practices

Use Sparingly

Notifications are disruptive by design and should be used sparingly. Use fewer notifications by reserving them for more-important information that might otherwise go unnoticed by the user.

Less-urgent notifications can be provided through a link or drop-down in the application header or footer, instead of via immediate notifications.

Open in a
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protected override render() {
  return html`
    <vaadin-context-menu
      open-on="click"
      ${contextMenuRenderer(
        () => html`<div style="padding: var(--lumo-space-l);">Show notifications here</div>`,
        []
      )}
    >
      <vaadin-button aria-label="notifications" theme="tertiary">
        <vaadin-icon icon="vaadin:bell-o"></vaadin-icon>
        <span theme="badge error primary small pill">4</span>
      </vaadin-button>
    </vaadin-context-menu>
  `;
}

Limit Content Length

Aim for one or two lines of content. Notifications should be brief and to the point. More information can be provided through an embedded link or Button.

Open in a
new tab
Do show a preview of longer content, and link to the full details
import { html, LitElement } from 'lit';
import '@vaadin/button';
import '@vaadin/icon';
import '@vaadin/notification';
import '@vaadin/vaadin-lumo-styles/vaadin-iconset';
import { applyTheme } from 'Frontend/generated/theme';

export class Example extends LitElement {
  protected override createRenderRoot() {
    const root = super.createRenderRoot();
    // Apply custom theme (only supported if your app uses one)
    applyTheme(root);
    return root;
  }

  protected override render() {
    return html`
      <vaadin-notification-card slot="middle">
        <div>
          <div>Aria Bailey</div>
          <div style="font-size: var(--lumo-font-size-s); color: var(--lumo-secondary-text-color);">
            Yeah, I know. But could you help me with...
          </div>
        </div>
        <vaadin-button>View</vaadin-button>
        <vaadin-button theme="tertiary-inline">
          <vaadin-icon icon="lumo:cross"></vaadin-icon>
        </vaadin-button>
      </vaadin-notification-card>
    `;
  }
}

Open in a
new tab
Don’t display all details in the notification
import { html, LitElement } from 'lit';
import '@vaadin/button';
import '@vaadin/icon';
import '@vaadin/notification';
import '@vaadin/vaadin-lumo-styles/vaadin-iconset';
import { applyTheme } from 'Frontend/generated/theme';

export class Example extends LitElement {
  protected override createRenderRoot() {
    const root = super.createRenderRoot();
    // Apply custom theme (only supported if your app uses one)
    applyTheme(root);
    return root;
  }

  protected override render() {
    return html`
      <vaadin-notification-card slot="middle">
        <div>
          <div>New message from Aria Bailey</div>
          <div style="font-size: var(--lumo-font-size-s); color: var(--lumo-secondary-text-color);">
            Yeah, I know. But could you help me with this. I’m not sure where the bug is in my CSS?
            The checkmark doesn’t get the right color. I’m trying to use the CSS custom properties
            from our design system, but for some reason it’s not working.
          </div>
        </div>
        <vaadin-button theme="tertiary-inline">
          <vaadin-icon icon="lumo:cross"></vaadin-icon>
        </vaadin-button>
      </vaadin-notification-card>
    `;
  }
}

Component	Usage recommendations
Dialog	Dialog should be used instead of Notification for anything that requires immediate user action.

Component

Usage recommendations

Dialog

Dialog should be used instead of Notification for anything that requires immediate user action.

77E15AD0-F634-4D81-8C4D-FAC7A21D889B

Documentation

Documentation

Notification

Theme Variants

Success

Error

Primary

Contrast

Duration

Persistent Notifications

Position

Recommendations

Stacking

Size

Interactive Elements

Making Interactive Elements Keyboard-Accessible

Icons and Other Rich Formatting

Static Helper

Best Practices

Use Sparingly

Limit Content Length

Documentation

Theme Variants

Success

Error

Primary

Contrast

Duration

Persistent Notifications

Position

Recommendations

Stacking

Size

Interactive Elements

Making Interactive Elements Keyboard-Accessible

Icons and Other Rich Formatting

Static Helper

Best Practices

Use Sparingly

Limit Content Length

Related Components