# browser_get_attribute

Get the value of an HTML attribute from an element. Can retrieve any attribute including 'href', 'src', 'value', 'data-*' attributes, 'class', 'id', etc. Returns null if attribute doesn't exist.

## Usage Example

### CURL

```bash
POST `/api/execute/browser_get_attribute`

curl -X POST \
 -H "Authorization: Bearer <token>" \
 -H "Content-Type: application/json" \
 -d '{

"context_id": "ctx_000001",

"selector": "#element-id",

"attribute": "<attribute>"

}' \
http://localhost:8080/api/execute/browser_get_attribute
```

### Python SDK

```python
import asyncio

from owl_browser import OwlBrowser, RemoteConfig

# Async usage
async with OwlBrowser(config) as browser:
    context = await browser.create_context()
    context_id = context["context_id"]
    await browser.get_attribute(
        context_id=context_id,
        selector="#element-id",
        attribute="value"
    )
```

### Node.js SDK

```javascript
import { OwlBrowser } from '@olib-ai/owl-browser-sdk';

// Async usage
const ctx = await browser.createContext();
const contextId = ctx.context_id;
await browser.getAttribute({
    context_id: contextId,
    selector: '#element-id',
    attribute: 'value'
});
```

## Parameters

### Required

- `context_id` string required  
  The unique identifier of the browser context (e.g., 'ctx_000001')
- `selector` string required  
  CSS selector or natural language description of the element
- `attribute` string required  
  The attribute name to retrieve (e.g., 'href', 'src', 'value', 'data-id', 'class')

### Optional

- `index` string  
  When multiple elements match the selector, get attribute from the Nth element (0-based). Default: -1 (first match)

## Response

Returns a JSON object with the operation result.

```json
{
  "success": true,
  "result": <value>
}
```