> Portal Navigation:
> 
> - Append `.md` to any URL under `https://dev.wix.com/docs/` to get its markdown version.
> - Pages are either content pages (article or reference text) or menu pages (a list of links to child pages).
> - To get a menu page, truncate any URL to a parent path and append `.md` (e.g. `https://dev.wix.com/docs/sdk.md`, `https://dev.wix.com/docs/sdk/core-modules.md`).
> - Top-level index of all portals: https://dev.wix.com/docs/llms.txt
> - Full concatenated docs: https://dev.wix.com/docs/llms-full.txt

# Method name:

siteWindow.getAppPageData()

# Method Link:

https://dev.wix.com/docs/sdk/frontend-modules/window/get-app-page-data.md

# Method Description:

Gets the data passed to a [custom app page](https://dev.wix.com/docs/develop-websites/articles/wix-apps/replace-a-wix-business-app-page-with-your-own-custom-version.md).

Wix passes data to custom app pages that you can use when implementing a page's business logic.
Call the `getAppPageData()` method to retrieve the data and use it in your code.
The data retrieved by this method is different for each type of custom app page.
For more information, see App Page Data ([SDK](https://dev.wix.com/docs/sdk/frontend-modules/window/app-page-data.md) | [Velo](https://dev.wix.com/docs/velo/api-reference/wix-window-frontend/app-page-data.md)).

Learn more about [building custom app pages](https://dev.wix.com/docs/develop-websites/articles/wix-apps/replace-a-wix-business-app-page-with-your-own-custom-version.md).

>**Note:** If you call `getAppPageData()` for a page that's not
a custom app page, it returns `null`.

# Method Permissions:



# Method Permissions Scopes IDs:

undefined



# Method Code Examples:

## Get the data passed to a custom app page

```javascript
import { window } from '@wix/site-window';

// ...

let appData = await window.getAppPageData();  // {nextSection: {sectionId: "Booking Form"}}
```