> ## Documentation Index
> Fetch the complete documentation index at: https://www.canva.dev/docs/apps/llms.txt
> Use this file to discover all available pages before exploring further.

# Notification

Display toast notifications to users.

## Running this example

To run this example locally:

1. If you haven't already, create a new app in the [Developer Portal](https://www.canva.com/developers/apps). For more information, refer to our [Quickstart guide](https://www.canva.dev/docs/apps/quickstart/).

2. In your app's configuration on the [Developer Portal](https://www.canva.com/developers/apps), ensure the "Development URL" is set to `http://localhost:8080`.

3. Clone the starter kit:

   ```shell
   git clone https://github.com/canva-sdks/canva-apps-sdk-starter-kit.git
   cd canva-apps-sdk-starter-kit
   ```

4. Install dependencies:

   ```shell
   npm install
   ```

5. Run the example:
   ```shell
   npm run start:example notification
   ```

6. Click the **Preview URL** link shown in the terminal to open the example in the Canva editor.

## Example app source code

<Tabs>
  <Tab name="app.tsx">
    ```typescript
    // For usage information, see the README.md file.
    import { Button, Rows, Text } from "@canva/app-ui-kit";
    import { notification } from "@canva/platform";
    import * as styles from "styles/components.css";

    export const App = () => {
      // Static demonstration messages for example purposes
      const funMessages = [
        "🚀 Keep going, superstar!",
        "💪 You got this!",
        "🌟 Shine bright!",
        "🔥 Crushing it!",
        "🏆 Winner vibes only!",
      ];

      const handleClick = () => {
        const randomMessage =
          funMessages[Math.floor(Math.random() * funMessages.length)];
        notification.addToast({
          messageText: randomMessage || "🎲 Random notification!",
        });
      };
      return (
        <div className={styles.scrollContainer}>
          <Rows spacing="1u">
            <Text>Apps can trigger notifications:</Text>
            <Button variant="primary" onClick={handleClick}>
              Show a fun toast notification 🍞
            </Button>
          </Rows>
        </div>
      );
    };
    ```
  </Tab>

  <Tab name="index.tsx">
    ```typescript
    // For usage information, see the README.md file.
    import { AppUiProvider } from "@canva/app-ui-kit";
    import { createRoot } from "react-dom/client";
    import { App } from "./app";
    import "@canva/app-ui-kit/styles.css";
    import type { DesignEditorIntent } from "@canva/intents/design";
    import { prepareDesignEditor } from "@canva/intents/design";

    async function render() {
      const root = createRoot(document.getElementById("root") as Element);

      root.render(
        <AppUiProvider>
          <App />
        </AppUiProvider>,
      );
    }

    const designEditor: DesignEditorIntent = { render };
    prepareDesignEditor(designEditor);

    // Hot Module Replacement for development (automatically reloads the app when changes are made)
    if (module.hot) {
      module.hot.accept("./app", render);
    }
    ```
  </Tab>

  <Tab name="README.md">
    ```markdown
    # Notification example

    Demonstrates how to display toast notifications to users using the notification API.

    For API reference docs and instructions on running this example, see: <https://www.canva.dev/docs/apps/examples/notification/>.

    NOTE: This example differs from what is expected for public apps to pass a Canva review:

    - Message content is hardcoded for demonstration purposes only. Production apps should provide user input interfaces or dynamic content loading.
    - Error handling is simplified for demonstration. Production apps must implement comprehensive error handling with clear user feedback and graceful failure modes.
    - Internationalization is not implemented. Production apps must support multiple languages using the `@canva/app-i18n-kit` package to pass Canva review requirements
    - The code structure is simplified: Production apps using [intents](https://www.canva.dev/docs/apps/intents/) are recommended to call the prepareDesignEditor function from src/intents/design_editor/index.tsx.
    ```
  </Tab>
</Tabs>

## API reference

* [App UI Kit](https://www.canva.dev/docs/apps/app-ui-kit/)
* [`notification.addToast`](https://www.canva.dev/docs/apps/api/latest/platform-notification-add-toast/)
* [`prepareDesignEditor`](https://www.canva.dev/docs/apps/api/latest/intents-design-prepare-design-editor/)

## Need help?

* Join our [Community Forum](https://community.canva.dev/)
* Report issues with this example on [GitHub](https://github.com/canva-sdks/canva-apps-sdk-starter-kit/issues)