> For the complete documentation index, see [llms.txt](https://docs.devolutions.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.devolutions.net/powershell-universal/de/portal/portal-widgets/services.md).

# Dienste

## JavaScript

Die JavaScript-Runtime kann über den JavaScript-Dienst aufgerufen werden. Er ermöglicht das Ausführen von JavaScript auf dem Client und optional das Zurückgeben einer Antwort.

```powershell
function OnClick {
    #Don't return a value    
    $JavaScript.InvokeVoid("alert('Hello!')")
    
    #Return a value
    $Value = $JavaScript.Invoke("'String'")
    $Message.Success($Value)
}
```

## Nachrichten

Der Nachrichtendienst wird verwendet, um dem Endbenutzer Nachrichten anzuzeigen. Er basiert auf `IMessageService`. Weitere Informationen finden Sie [hier](https://antblazor.com/en-US/components/message#API).

```powershell
function OnClick {
   $Message.Success("Hello!")
}
```

## Benachrichtigungen

Der Benachrichtigungsdienst wird verwendet, um Nachrichten anzuzeigen, die mehr Informationen enthalten als der Nachrichtendienst. Sie können Titel, Nachricht und Symbol anpassen. Weitere Informationen finden Sie [hier](https://antblazor.com/en-US/components/notification).

```powershell
function OnClick {
    $Config = [AntDesign.NotificationConfig]::new()
    $Config.Message = "Title" 
    $Config.Description = "This is the body of the notification"
    $Notification.Open($Config)
}
```

## Navigation

Der Navigationsdienst kann verwendet werden, um zwischen Portalseiten, Admin-Seiten und externen Seiten zu wechseln. Der Navigationsdienst ist eine Instanz von [NavigationManager](https://learn.microsoft.com/en-us/dotnet/api/microsoft.aspnetcore.components.navigationmanager?view=aspnetcore-8.0).

```powershell
function OnClick {
    $Navigation.NavigateTo("/portal/page/name")
}
```


---

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