# RequestNumbersCallback Function

> Callback function for requesting an array of numerical values.

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

---

### Description

Callback function for requesting an array of numerical values.

### Syntax

```javascript
function(<Number[]> result)
```

### Examples

The following example demonstrates `RequestNumbersCallback` in a practical document-editing workflow. Callback function for requesting an array of numerical values.

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

function requestNumbersCallback(result) {
    console.log("result:", result);
}

TXTextControl.inputFormat.getSupportedUnderlineStyles(requestNumbersCallback, onTxError);
```

---

## Nearby

- **Previous:** [RequestNumberFormatsCallback Function](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/javascript/requestnumberformatscallback/llms-full.txt)
- **Next:** [RequestObjectCallback Function](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/javascript/requestobjectcallback/llms-full.txt)