# RequestViewModeCallback Function

> Callback function for requests expecting a ViewMode object.

- **Product:** TX Text Control .NET Server
- **Section:** Reference
- **Kind:** Function
- **Path:** TX Text Control .NET Server > Reference > JavaScript API > RequestViewModeCallback Function
- **247 words**
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/javascript/requestviewmodecallback/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/javascript/requestviewmodecallback/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/javascript/requestviewmodecallback/llms-full.txt

---

### Description

Callback function for requests expecting a [ViewMode object](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/javascript/txtextcontrol/viewmode-enumeration/llms-full.txt).

### Syntax

```javascript
function(<ViewMode> viewMode)
```

### Examples

The following example demonstrates `RequestViewModeCallback` in a practical document-editing workflow. Callback function for requests expecting a ViewMode object.

```javascript
function onTxError(error) {
    console.error("TX Text Control error:", error.msg);
    error.handled = true;
}

function requestViewModeCallback(viewMode) {
    console.log("view mode:", viewMode);
}

TXTextControl.getViewMode(requestViewModeCallback, onTxError);
```

---

## Nearby

- **Previous:** [RequestVerticalAlignmentCallback Function](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/javascript/requestverticalalignmentcallback/llms-full.txt)
- **Next:** [Ribbon Object](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/javascript/ribbon/llms-full.txt)