# RequestTableOfContentsCallback Function

> Callback function for requests expectiong a TableOfContents object.

- **Product:** DS Server
- **Section:** Reference
- **Kind:** Function
- **Path:** DS Server > Reference > JavaScript API > RequestTableOfContentsCallback Function
- **283 words**
- **Web URL:** https://docs.textcontrol.com/ds-server/reference/javascript/requesttableofcontentscallback/
- **LLMs URL:** https://docs.textcontrol.com/ds-server/reference/javascript/requesttableofcontentscallback/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/ds-server/reference/javascript/requesttableofcontentscallback/llms-full.txt

---

### Description

Callback function for requests expectiong a [TableOfContents](https://docs.textcontrol.com/ds-server/reference/javascript/tableofcontents/llms-full.txt) object.

### Syntax

```javascript
function(<TableOfContents> toc)
```

### Examples

The following example demonstrates `RequestTableOfContentsCallback` in a practical document-editing workflow. Callback function for requests expectiong a TableOfContents object.

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

function requestTableOfContentsCallback(toc) {
    console.log("toc:", toc);
}

function useRequestTableOfContentsCallback(tableOfContentss) {
    tableOfContentss.getItem(requestTableOfContentsCallback, onTxError, 25);
}
```

---

## Nearby

- **Previous:** [RequestTableColumnCallback Function](https://docs.textcontrol.com/ds-server/reference/javascript/requesttablecolumncallback/llms-full.txt)
- **Next:** [RequestTableRowCallback Function](https://docs.textcontrol.com/ds-server/reference/javascript/requesttablerowcallback/llms-full.txt)