# KeyUpData

```python
gradio.KeyUpData(···)
```

### Description

The gr.KeyUpData class is a subclass of gr.EventData that specifically carries information about the `.key_up()` event. When gr.KeyUpData is added as a type hint to an argument of an event listener method, a gr.KeyUpData object will automatically be passed as the value of that argument. The attributes of this object contains information about the event that triggered the listener.

### Example Usage

```python
import gradio as gr

def test(value, key_up_data: gr.KeyUpData):
    return {
        "component value": value,
        "input value": key_up_data.input_value,
        "key": key_up_data.key
    }

with gr.Blocks() as demo:
    d = gr.Dropdown(["abc", "def"], allow_custom_value=True)
    t = gr.JSON()
    d.key_up(test, d, t)
demo.launch()
```

### Attributes

| Parameter | Type | Default | Description |
|-----------|------|---------|-------------|
| `target` | `Block \| None` | `` | The component object that triggered the event. Can be used to distinguish multiple components bound to the same listener. |
| `data` | `Any` | `` |  |
### Demos

**dropdown_key_up**

[See demo on Hugging Face Spaces](https://huggingface.co/spaces/gradio/dropdown_key_up)

```python
import gradio as gr

def test(value, key_up_data: gr.KeyUpData):
    return {
        "component value": value,
        "input value": key_up_data.input_value,
        "key": key_up_data.key
    }

with gr.Blocks() as demo:
    d = gr.Dropdown(["abc", "def"], allow_custom_value=True)
    t = gr.JSON()
    d.key_up(test, d, t)

if __name__ == "__main__":
    demo.launch()
```