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# Radio Button Element

> Radio Button Element — CometChat documentation.

The `RadioButtonElement` class is utilised to create a single selection input element in a user interface.

| Name | Type | Description |
| - | - | - |
| **elementId** | string | Used to set unique ID for the element |
| **label** | string | Used to set a label for the element |
| **options** | List\<OptionElement> | Used to set options for the element |
| **optional** | bool | Used to set optional flag for the element |
| **defaultValue** | String | Used to set default value for the element |

***

### Class Usage

Here's how to create an instance of the `RadioButtonElement` class:

<Tabs>
  <Tab title="Dart">
    ```dart theme={null}
    RadioButtonElement(
        elementId: "gender", 
        label: "Gender", 
        options: [
            OptionElement(label: "Male",value: "Male" ),
            OptionElement(label: "Female",value: "Female" ),
        ]
    )
    ```
  </Tab>
</Tabs>


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