# RequestBooleanCallback Function

> Callback function for requesting a boolean value.

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

---

### Description

Callback function for requesting a boolean value.

### Syntax

```javascript
function(<Boolean> result)
```

### Examples

The following example demonstrates `RequestBooleanCallback` in a practical document-editing workflow. Callback function for requesting a boolean value.

```javascript
function requestBooleanCallback(result) {
    console.log("result:", result);
}

function useRequestBooleanCallback(formattingStyle) {
    formattingStyle.getBold(requestBooleanCallback);
}
```

---

## Nearby

- **Previous:** [RequestBarcodeTypeCallback Function](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/javascript/requestbarcodetypecallback/llms-full.txt)
- **Next:** [RequestCapitalsCallback Function](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/javascript/requestcapitalscallback/llms-full.txt)