# Javascript: EditableRegionEventArgs.start Property

> The index (one-based) of the first character which belongs to the editable region.

- **Product:** TX Text Control .NET Server
- **Section:** Reference
- **Kind:** Property
- **Introduced:** 28.0
- **Path:** TX Text Control .NET Server > Reference > JavaScript API > Javascript: EditableRegionEventArgs.start Property
- **178 words**
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/javascript/editableregioneventargs/start-property/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/javascript/editableregioneventargs/start-property/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/javascript/editableregioneventargs/start-property/llms-full.txt

---

### Description

The index (one-based) of the first character which belongs to the editable region.

### Syntax

```javascript
<Number> EditableRegionEventArgs.start
```

### Examples

The following example demonstrates `EditableRegionEventArgs.start` in a practical document-editing workflow. The index (one-based) of the first character which belongs to the editable region.

```javascript
function inspectStart(editableRegionEventArgs) {
    const start = editableRegionEventArgs.start;
    console.log("start:", start);
}
```

---

## Nearby

- **Previous:** [Javascript: EditableRegionEventArgs.length Property](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/javascript/editableregioneventargs/length-property/llms-full.txt)
- **Next:** [Javascript: EditableRegionEventArgs.userName Property](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/javascript/editableregioneventargs/username-property/llms-full.txt)