> 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/fr/portal/portal-widgets/services.md).

# Services

Accédez aux services JavaScript, de messages, de notifications et de navigation dans les widgets du portail PowerShell Universal pour créer des interfaces utilisateur interactives.

## JavaScript

Le moteur d'exécution JavaScript peut être accédé avec le service JavaScript. Il permet d'exécuter du JavaScript sur le client et, de façon optionnelle, de retourner une réponse.

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

## Messages

Le service de messages est utilisé pour afficher des messages à l'utilisateur final. Il est basé sur `IMessageService`.

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

## Notifications

Le service de notifications affiche des notifications qui contiennent plus d'information que le service de messages. Vous pouvez personnaliser le titre, le message et l'icône.

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

## Navigation

Le service de navigation peut être utilisé pour se déplacer entre les pages du portail, les pages d'administration et les pages externes. Le service de navigation est une instance de [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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