# Javascript: PageBorder.setTopLineWidth Method

> Sets the width of the top border line.

- **Product:** TX Text Control .NET Server
- **Section:** Reference
- **Kind:** Method
- **Introduced:** 26.0
- **Path:** TX Text Control .NET Server > Reference > JavaScript API > Javascript: PageBorder.setTopLineWidth Method
- **359 words**
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/javascript/pageborder/settoplinewidth-method/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/javascript/pageborder/settoplinewidth-method/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/javascript/pageborder/settoplinewidth-method/llms-full.txt

---

### Description

Sets the width of the top border line.

### Syntax

```javascript
<void> PageBorder.setTopLineWidth(<number> topLineWidth, [<EmptyRequestCallback> callback], [<ErrorCallback> errorCallback])
```

### Parameters

| Parameter | Description |
|---|---|
| topLineWidth | The width of the top border line. |
| callback | Optional. Is called when the operation completed. |
| errorCallback | Optional. Is called when the operation failed with an error. |

### Examples

The following example demonstrates `PageBorder.setTopLineWidth` in a practical document-editing workflow. It sets the width of the top border line.

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

function configureTopLineWidth(pageBorder) {
    pageBorder.setTopLineWidth(
        1440,
        function() {
            console.log("set top line width completed.");
        },
        onTxError
    );
}
```

---

## Nearby

- **Previous:** [Javascript: PageBorder.setTopLineColor Method](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/javascript/pageborder/settoplinecolor-method/llms-full.txt)
- **Next:** [PageCollection Object](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/javascript/pagecollection/llms-full.txt)