> ## Documentation Index
> Fetch the complete documentation index at: https://cometchat-22654f5b-docs-audit-mechanical-fixes.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Radio Button Element

> Radio Button Element — CometChat documentation.

The `RadioButtonElement` class is designed to create a radio button input element in a user interface.

### Constructor

| Name      | Type                   | Description                                                 |
| --------- | ---------------------- | ----------------------------------------------------------- |
| elementId | `string`               | This property in constructor accepts the Id for the element |
| label     | `string`               | This property in constructor accepts the label for radio    |
| options   | `Array<OptionElement>` | This property in constructor accepts options for radio      |

### Class Usage

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

<Tabs>
  <Tab title="TypeScript">
    ```typescript theme={null}
    let option1 = new OptionElement("Option 1", "1");

    let option2 = new OptionElement("Option 2", "2");

    let optionsList = [option1, option2];

    let radioButtonElement = new RadioButtonElement(
      "1",
      "Choose an option",
      optionsList
    );
    ```
  </Tab>
</Tabs>

In this example, a new instance of `RadioButtonElement` is created with an elementId "1", a label "Choose an option", and a list of two options.

### Key Properties and Methods

#### Default Value of the Input Element

The `setDefaultValue()` method sets the default value in the radio button input, while the `getDefaultValue()` retrieves it.

For example:

<Tabs>
  <Tab title="TypeScript">
    ```typescript theme={null}
    radioButtonElement.setDefaultValue("1");
    ```
  </Tab>
</Tabs>

### Example

Here is an example that showcases the creation and manipulation of an instance of `RadioButtonElement`:

<Tabs>
  <Tab title="TypeScript">
    ```typescript theme={null}
    // Create some options

    let option1 = new OptionElement("Option 1", "1");

    let option2 = new OptionElement("Option 2", "2");

    let optionsList = [option1, option2];

    // Create a new instance of RadioButtonElement

    let radioButtonElement = new RadioButtonElement(
      "1",
      "Choose an option",
      optionsList
    );

    // Set and get the default value

    radioButtonElement.setDefaultValue("1");
    ```
  </Tab>
</Tabs>