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

# Call Buttons

> Call Buttons — CometChat documentation.

## Overview

The `Call Button` is a [Component](/ui-kit/react/v4/components-overview#components) provides users with the ability to make calls, access call-related functionalities, and control call settings. Clicking this button typically triggers the call to be placed to the desired recipient.

<Frame>
  <img src="https://mintcdn.com/cometchat-22654f5b-docs-rn-guide-message-privately/ugckbRl5Q-H7t8X2/images/e2e3d77e-call_buttons_overview_web_screens-91e57fec02ec23c3a6f4bca0f29215c0.png?fit=max&auto=format&n=ugckbRl5Q-H7t8X2&q=85&s=450f14b644bc14a17da98bc5ae7381d9" width="3600" height="2400" data-path="images/e2e3d77e-call_buttons_overview_web_screens-91e57fec02ec23c3a6f4bca0f29215c0.png" />
</Frame>

## Usage

### Integration

<Tabs>
  <Tab title="CallButtonDemo.tsx">
    ```typescript theme={null}
    import { CometChat } from "@cometchat/chat-sdk-javascript";
    import { CometChatCallButtons } from "@cometchat/chat-uikit-react";
    import React from "react";

    const CallButtonDemo = () => {
      const [chatUser, setChatUser] = React.useState<CometChat.User>();
      React.useEffect(() => {
        CometChat.getUser("richard-uid").then((user) => {
          setChatUser(user);
        });
      }, []);
      return <CometChatCallButtons user={chatUser} />;
    };

    export default CallButtonDemo;
    ```
  </Tab>

  <Tab title="App.tsx">
    ```typescript theme={null}
    import { CallButtonDemo } from "./CallButtonDemo";

    export default function App() {
      return (
        <div className="App">
          <div>
            <CallButtonDemo />
          </div>
        </div>
      );
    }
    ```
  </Tab>
</Tabs>

### Actions

[Actions](/ui-kit/react/v4/components-overview#actions) dictate how a component functions. They are divided into two types: Predefined and User-defined. You can override either type, allowing you to tailor the behavior of the component to fit your specific needs.

#### 1. onVoiceCallClick

`onVoiceCallClick` is triggered when you click the voice call button of the `Call Buttons` component. You can override this action using the following code snippet.

<Tabs>
  <Tab title="TypeScript">
    CallButtonsDemo.tsx

    ```typescript theme={null}
    import { CometChat } from "@cometchat/chat-sdk-javascript";
    import { CometChatCallButtons } from "@cometchat/chat-uikit-react";
    import React from "react";

    const CallButtonDemo = () => {
      const [chatUser, setChatUser] = React.useState<CometChat.User>();
      React.useEffect(() => {
        CometChat.getUser("uid").then((user) => {
          setChatUser(user);
        });
      }, []);

      const handleOnVoiceCallClick = () => {
        console.log("Your Custom on voice call click actions");
      };
      return (
        <CometChatCallButtons
          user={chatUser}
          onVoiceCallClick={handleOnVoiceCallClick}
        />
      );
    };

    export default CallButtonDemo;
    ```
  </Tab>

  <Tab title="JavaScript">
    CallButtonsDemo.jsx

    ```javascript theme={null}
    import React, { useState, useEffect } from "react";
    import { CometChat } from "@cometchat/chat-sdk-javascript";
    import { CometChatCallButtons } from "@cometchat/chat-uikit-react";

    const CallButtonDemo = () => {
      const [chatUser, setChatUser] = useState(null);

      useEffect(() => {
        CometChat.getUser("uid").then((user) => {
          setChatUser(user);
        });
      }, []);

      const handleOnVoiceCallClick = () => {
        console.log("Your Custom on voice call click actions");
      };

      return (
        <CometChatCallButtons
          user={chatUser}
          onVoiceCallClick={handleOnVoiceCallClick}
        />
      );
    };

    export default CallButtonDemo;
    ```
  </Tab>
</Tabs>

#### 2. onVideoCallClick

`onVideoCallClick` is triggered when you click the video call button of the `Call Buttons` component. You can override this action using the following code snippet.

<Tabs>
  <Tab title="TypeScript">
    CallButtonsDemo.tsx

    ```typescript theme={null}
    import { CometChat } from "@cometchat/chat-sdk-javascript";
    import { CometChatCallButtons } from "@cometchat/chat-uikit-react";
    import React from "react";

    const CallButtonDemo = () => {
      const [chatUser, setChatUser] = React.useState<CometChat.User>();
      React.useEffect(() => {
        CometChat.getUser("uid").then((user) => {
          setChatUser(user);
        });
      }, []);

      const handleOnVideoCallClick = () => {
        console.log("Your Custom on video call click actions");
      };
      return (
        <CometChatCallButtons
          user={chatUser}
          onVideoCallClick={handleOnVideoCallClick}
        />
      );
    };

    export default CallButtonDemo;
    ```
  </Tab>

  <Tab title="JavaScript">
    CallButtonsDemo.jsx

    ```javascript theme={null}
    import React, { useState, useEffect } from "react";
    import { CometChat } from "@cometchat/chat-sdk-javascript";
    import { CometChatCallButtons } from "@cometchat/chat-uikit-react";

    const CallButtonDemo = () => {
      const [chatUser, setChatUser] = useState(null);

      useEffect(() => {
        CometChat.getUser("uid").then((user) => {
          setChatUser(user);
        });
      }, []);

      const handleOnVideoCallClick = () => {
        console.log("Your Custom on video call click actions");
      };

      return (
        <CometChatCallButtons
          user={chatUser}
          onVideoCallClick={handleOnVideoCallClick}
        />
      );
    };

    export default CallButtonDemo;
    ```
  </Tab>
</Tabs>

#### 3. onError

This action doesn't change the behavior of the component but rather listens for any errors that occur in the Call Button component.

<Tabs>
  <Tab title="TypeScript">
    CallButtonsDemo.tsx

    ```typescript theme={null}
    import { CometChat } from "@cometchat/chat-sdk-javascript";
    import { CometChatCallButtons } from "@cometchat/chat-uikit-react";
    import React from "react";

    const CallButtonDemo = () => {
      const [chatUser, setChatUser] = React.useState<CometChat.User>();
      React.useEffect(() => {
        CometChat.getUser("uid").then((user) => {
          setChatUser(user);
        });
      }, []);

      const handleOnError = () => {
        console.log("Your Custom on error actions");
      };
      return <CometChatCallButtons user={chatUser} onError={handleOnError} />;
    };

    export default CallButtonDemo;
    ```
  </Tab>

  <Tab title="JavaScript">
    CallButtonsDemo.jsx

    ```javascript theme={null}
    import React, { useState, useEffect } from "react";
    import { CometChat } from "@cometchat/chat-sdk-javascript";
    import { CometChatCallButtons } from "@cometchat/chat-uikit-react";

    const CallButtonDemo = () => {
      const [chatUser, setChatUser] = useState(null);

      useEffect(() => {
        CometChat.getUser("uid").then((user) => {
          setChatUser(user);
        });
      }, []);

      const handleOnError = () => {
        console.log("Your Custom on error actions");
      };

      return <CometChatCallButtons user={chatUser} onError={handleOnError} />;
    };

    export default CallButtonDemo;
    ```
  </Tab>
</Tabs>

***

### Filters

**Filters** allow you to customize the data displayed in a list within a `Component`. You can filter the list based on your specific criteria, allowing for a more customized. Filters can be applied using `RequestBuilders` of Chat SDK.

The `Call Buttons` component does not have any exposed filters.

***

### Events

[Events](/ui-kit/react/v4/components-overview#events) are emitted by a `Component`. By using event you can extend existing functionality. Being global events, they can be applied in Multiple Locations and are capable of being Added or Removed.

The list of events emitted by the `Call Buttons` component is as follows.

| Event              | Description                                                                                               |
| ------------------ | --------------------------------------------------------------------------------------------------------- |
| **ccCallRejected** | This event is triggered when the initiated call is rejected by the receiver.                              |
| **ccCallEnded**    | This event is triggered when the initiated call successfully ends.                                        |
| **ccOutgoingCall** | This event is triggered when the user initiates a voice/video call.                                       |
| **ccMessageSent**  | This event is triggered when the sent message is in transit and also when it is received by the receiver. |

***

<Tabs>
  <Tab title="Add Listener">
    ```javascript theme={null}
    const ccCallRejected = CometChatCallEvents.ccCallRejected.subscribe(
      (call: CometChat.Call) => {
        //Your Code
      }
    );

    const ccCallEnded = CometChatCallEvents.ccCallEnded.subscribe(
      (call: CometChat.Call) => {
        //Your Code
      }
    );

    const ccOutgoingCall = CometChatCallEvents.ccOutgoingCall.subscribe(
      (call: CometChat.Call) => {
        //Your Code
      }
    );

    const ccMessageSent = CometChatMessageEvents.ccMessageSent.subscribe(() => {
      //Your Code
    });
    ```
  </Tab>
</Tabs>

***

<Tabs>
  <Tab title="Remove Listener">
    ```javascript theme={null}
    ccCallRejected?.unsubscribe();

    ccCallEnded?.unsubscribe();

    ccOutgoingCall?.unsubscribe();

    ccMessageSent?.unsubscribe();
    ```
  </Tab>
</Tabs>

***

## Customization

To fit your app's design requirements, you can customize the appearance of the Call Buttons component. We provide exposed methods that allow you to modify the experience and behavior according to your specific needs.

### Style

Using Style you can customize the look and feel of the component in your app, These parameters typically control elements such as the color, size, shape, and fonts used within the component.

#### 1. CallButtons Style

To customize the appearance, you can assign a `CallButtonsStyle` object to the `Call Buttons` component.

<Frame>
  <img src="https://mintcdn.com/cometchat-22654f5b-docs-rn-guide-message-privately/ubfBSdV1t6rmjxeA/images/898d062d-call_buttons_style_web_screens-762d189e33c01c5e86a455cf11933e07.png?fit=max&auto=format&n=ubfBSdV1t6rmjxeA&q=85&s=88991d8906234dd87f55e4fb7bd5b078" width="3600" height="2400" data-path="images/898d062d-call_buttons_style_web_screens-762d189e33c01c5e86a455cf11933e07.png" />
</Frame>

**Example**

In this example, we are employing the `callButtonsStyle`.

<Tabs>
  <Tab title="TypeScript">
    CallButtonsDemo.tsx

    ```typescript theme={null}
    import { CometChat } from "@cometchat/chat-sdk-javascript";
    import {
      CometChatCallButtons,
      CallButtonsStyle,
    } from "@cometchat/chat-uikit-react";
    import React from "react";

    const CallButtonDemo = () => {
      const [chatUser, setChatUser] = React.useState<CometChat.User>();
      React.useEffect(() => {
        CometChat.getUser("uid").then((user) => {
          setChatUser(user);
        });
      }, []);

      const callButtonsStyle = new CallButtonsStyle({
        background: "#e5c9f5",
        height: "50px",
        width: "400px",
        border: "1px solid #f8f5fa",
        buttonBackground: "#7735d4",
        buttonBorderRadius: "10px",
        videoCallIconTextColor: "#ffffff",
        voiceCallIconTextColor: "#ffffff",
        buttonPadding: "20px",
      });
      return (
        <CometChatCallButtons user={chatUser} callButtonsStyle={callButtonsStyle} />
      );
    };

    export default CallButtonDemo;
    ```
  </Tab>

  <Tab title="JavaScript">
    CallButtonsDemo.jsx

    ```javascript theme={null}
    import React, { useState, useEffect } from "react";
    import { CometChat } from "@cometchat/chat-sdk-javascript";
    import {
      CometChatCallButtons,
      CallButtonsStyle,
    } from "@cometchat/chat-uikit-react";

    const CallButtonDemo = () => {
      const [chatUser, setChatUser] = useState(null);

      useEffect(() => {
        CometChat.getUser("uid").then((user) => {
          setChatUser(user);
        });
      }, []);

      const callButtonsStyle = new CallButtonsStyle({
        background: "#e5c9f5",
        height: "50px",
        width: "400px",
        border: "1px solid #f8f5fa",
        buttonBackground: "#7735d4",
        buttonBorderRadius: "10px",
        videoCallIconTextColor: "#ffffff",
        voiceCallIconTextColor: "#ffffff",
        buttonPadding: "20px",
      });

      return (
        <CometChatCallButtons user={chatUser} callButtonsStyle={callButtonsStyle} />
      );
    };

    export default CallButtonDemo;
    ```
  </Tab>
</Tabs>

***

The following properties are exposed by `CallButtonsStyle`:

| Property                   | Description                            | Code                               |
| -------------------------- | -------------------------------------- | ---------------------------------- |
| **border**                 | Used to set border                     | `border?: string,`                 |
| **borderRadius**           | Used to set border radius              | `borderRadius?: string;`           |
| **background**             | Used to set background colour          | `background?: string;`             |
| **height**                 | Used to set height                     | `height?: string;`                 |
| **width**                  | Used to set width                      | `width?: string;`                  |
| **voiceCallIconTint**      | Used to set voice call icon tint       | `voiceCallIconTint?: string,`      |
| **videoCallIconTint**      | Used to set video call icon tint       | `videoCallIconTint?: string;`      |
| **voiceCallIconTextFont**  | Used to set voice call icon text font  | `voiceCallIconTextFont?: string;`  |
| **videoCallIconTextFont**  | Used to set video call icon text font  | `videoCallIconTextFont?: string;`  |
| **voiceCallIconTextColor** | Used to set voice call icon text color | `voiceCallIconTextColor?: string;` |
| **videoCallIconTextColor** | Used to set video call icon text color | `videoCallIconTextColor?: string;` |
| **buttonBackground**       | Used to set button background color    | `buttonBackground?: string;`       |
| **buttonBorder**           | Used to set button border              | `buttonBorder?: string;`           |
| **buttonBorderRadius**     | Used to set button border radius       | `buttonBorderRadius?: string;`     |
| **buttonPadding**          | Used to set button padding             | `buttonPadding?: string;`          |

***

### Functionality

These are a set of small functional customizations that allow you to fine-tune the overall experience of the component. With these, you can change text, set custom icons, and toggle the visibility of UI elements.

Here is a code snippet demonstrating how you can customize the functionality of the `Call Buttons` component.

<Tabs>
  <Tab title="TypeScript">
    CallButtonsDemo.tsx

    ```typescript theme={null}
    import { CometChat } from "@cometchat/chat-sdk-javascript";
    import { CometChatCallButtons } from "@cometchat/chat-uikit-react";
    import React from "react";

    const CallButtonDemo = () => {
      const [chatUser, setChatUser] = React.useState<CometChat.User>();
      React.useEffect(() => {
        CometChat.getUser("uid").then((user) => {
          setChatUser(user);
        });
      }, []);

      return (
        <CometChatCallButtons
          user={chatUser}
          videoCallIconHoverText="Your Custom Video Call Icon Hover Text"
          videoCallIconText="Your Custom Video Call Icon Text"
        />
      );
    };

    export default CallButtonDemo;
    ```
  </Tab>

  <Tab title="JavaScript">
    CallButtonsDemo.jsx

    ```javascript theme={null}
    import React, { useState, useEffect } from "react";
    import { CometChat } from "@cometchat/chat-sdk-javascript";
    import { CometChatCallButtons } from "@cometchat/chat-uikit-react";

    const CallButtonDemo = () => {
      const [chatUser, setChatUser] = useState(null);

      useEffect(() => {
        CometChat.getUser("uid").then((user) => {
          setChatUser(user);
        });
      }, []);

      return (
        <CometChatCallButtons
          user={chatUser}
          videoCallIconHoverText="Your Custom Video Call Icon Hover Text"
          videoCallIconText="Your Custom Video Call Icon Text"
        />
      );
    };

    export default CallButtonDemo;
    ```
  </Tab>
</Tabs>

Default:

<Frame>
  <img src="https://mintcdn.com/cometchat-22654f5b-docs-rn-guide-message-privately/ugckbRl5Q-H7t8X2/images/e0529ebd-call_buttons_functionality_default_web_screens-f060729f51f6a028e9860e90d9e61e34.png?fit=max&auto=format&n=ugckbRl5Q-H7t8X2&q=85&s=412f2e393c9cc938e7f266817a70429a" width="3600" height="2400" data-path="images/e0529ebd-call_buttons_functionality_default_web_screens-f060729f51f6a028e9860e90d9e61e34.png" />
</Frame>

Custom:

<Frame>
  <img src="https://mintcdn.com/cometchat-22654f5b-docs-rn-guide-message-privately/fxK75AS6FzDL1Oqo/images/ba2ce2d5-call_buttons_functionality_custom_web_screens-516d4342c2d95348203d0fc4882e6e1a.png?fit=max&auto=format&n=fxK75AS6FzDL1Oqo&q=85&s=307b2b7bb6c08b484ca61b339203f422" width="3600" height="2400" data-path="images/ba2ce2d5-call_buttons_functionality_custom_web_screens-516d4342c2d95348203d0fc4882e6e1a.png" />
</Frame>

Below is a list of customizations along with corresponding code snippets

| Property                   | Description                                                                              | Code                                                              |
| -------------------------- | ---------------------------------------------------------------------------------------- | ----------------------------------------------------------------- |
| **videoCallIconHoverText** | Used to set the custom text or tooltip displayed on the video call button on mouse over. | `videoCallIconHoverText='Your Custom Video Call Icon Hover Text'` |
| **voiceCallIconHoverText** | Used to set the custom text or tooltip displayed on the voice call button on mouse over. | `voiceCallIconHoverText='Your Custom Voice Call Icon Hover text'` |
| **videoCallIconText**      | Used to set custom video call icon text                                                  | `videoCallIconText='Your Custom Video Call Icon Text'`            |
| **voiceCallIconText**      | Used to set custom voice call icon text                                                  | `voiceCallIconText='Your Custom Voice Call Icon Text'`            |
| **videoCallIconURL**       | Used to set custom Icon for Video Call Button                                            | `videoCallIconURL='Custom Video Call Icon URL'`                   |
| **voiceCallIconURL**       | Used to set custom Icon for Voice Call Button                                            | `videoCallIconURL='Custom Voice Call Icon URL'`                   |
| **group**                  | Used to set the group object for Call Buttons                                            | `group={chatGroup}`                                               |
| **user**                   | Sets the user object for Call Buttons                                                    | `user={chatUser}`                                                 |

***

### Advanced

For advanced-level customization, you can set custom views to the component. This lets you tailor each aspect of the component to fit your exact needs and application aesthetics. You can create and define your views, layouts, and UI elements and then incorporate those into the component.

the `Call Buttons` component does not offer any advanced functionalities beyond this level of customization.

***

## Configuration

Configurations offer the ability to customize the properties of each individual component within a Composite Component.

The Call Buttons Component is a Composite Component and it has a specific set of configuration for each of its components.

### OngoingCall

If you want to customize the properties of the [OngoingCall](/ui-kit/react/v4/ongoing-call) Component inside Call Buttons Component, you need use the `CallScreenConfiguration` object.

The `OngoingCallConfiguration` provides access to all the [Action](/ui-kit/react/v4/ongoing-call#actions), [Filters](/ui-kit/react/v4/ongoing-call#filters), [Styles](/ui-kit/react/v4/ongoing-call#style), [Functionality](/ui-kit/react/v4/ongoing-call#functionality), and [Advanced](/ui-kit/react/v4/ongoing-call#advanced) properties of the [OngoingCall](/ui-kit/react/v4/ongoing-call) component.

<Info>
  Please note that the properties marked with the [report]() symbol are not accessible within the Configuration Object.
</Info>

**Example**

<Frame>
  <img src="https://mintcdn.com/cometchat-22654f5b-docs-rn-guide-message-privately/OOBJyP9hM0C-rAe_/images/dd41a58c-call_buttons_ongoingcall_configuration-2c6d2cf534b41abb33ef52c6b1925fe5.png?fit=max&auto=format&n=OOBJyP9hM0C-rAe_&q=85&s=26bba8afd833c23e9f64792d94507aa1" width="3597" height="2398" data-path="images/dd41a58c-call_buttons_ongoingcall_configuration-2c6d2cf534b41abb33ef52c6b1925fe5.png" />
</Frame>

In this example, we will show how you can display the call recording button in the [OngoingCall](/ui-kit/react/v4/ongoing-call) component using `ongoingCallConfiguration`.

<Tabs>
  <Tab title="TypeScript">
    CallButtonsDemo.tsx

    ```typescript theme={null}
    import React, { useState, useEffect } from "react";
    import { CometChat } from "@cometchat/chat-sdk-javascript";
    import { CometChatCallButtons, CallScreenConfiguration } from "@cometchat/chat-uikit-react";

    const CallButtonDemo = () => {
      const [chatUser, setChatUser] = useState(null);

      useEffect(() => {
        CometChat.getUser("uid").then((user) => {
          setChatUser(user);
        });
      }, []);

      function customSettingBuilder(audioOnlyCall, user, group) {
        const builder = new CometChatUIKitCalls.CallSettingsBuilder();
        if (user) {
          builder
            .enableDefaultLayout(true)
            .setIsAudioOnlyCall(true)
            .showRecordingButton(true);
        } else if (group) {
          builder
            .enableDefaultLayout(true)
            .setIsAudioOnlyCall(false)
            .showRecordingButton(true);
        }
        return builder;
      }
      return (
        <CometChatCallButtons
          user={chatUser}
          ongoingCallConfiguration={new CallScreenConfiguration({
            callSettingsBuilder: customSettingBuilder,
          })}
        />
      );
    };

    export default CallButtonDemo;
    ```
  </Tab>

  <Tab title="JavaScript">
    CallButtonsDemo.jsx

    ```javascript theme={null}
    import React, { useState, useEffect } from "react";
    import { CometChat } from "@cometchat/chat-sdk-javascript";
    import { CometChatCallButtons, CallScreenConfiguration } from "@cometchat/chat-uikit-react";

    const CallButtonDemo = () => {
      const [chatUser, setChatUser] = useState(null);

      useEffect(() => {
        CometChat.getUser("uid").then((user) => {
          setChatUser(user);
        });
      }, []);

      function customSettingBuilder(audioOnlyCall: boolean, user?: CometChat.User, group?: CometChat.Group) {
        const builder = new CometChatUIKitCalls.CallSettingsBuilder();
        if (user) {
          builder
            .enableDefaultLayout(true)
            .setIsAudioOnlyCall(true)
            .startRecordingOnCallStart(false)
            .showRecordingButton(true);
        } else if (group) {
          builder
            .enableDefaultLayout(true)
            .setIsAudioOnlyCall(false)
            .startRecordingOnCallStart(false)
            .showRecordingButton(true);
        }
        return builder;
      }
      return (
        <CometChatCallButtons
          user={chatUser}
          ongoingCallConfiguration={new CallScreenConfiguration({
            callSettingsBuilder: customSettingBuilder,
          })}
        />
      );
    };

    export default CallButtonDemo;
    ```
  </Tab>
</Tabs>

### OutGoingCall

If you want to customize the properties of the [OutGoingCall](/ui-kit/react/v4/outgoing-call) Component inside Call Buttons Component, you need use the `OutGoingCallConfiguration` object.

The `OutGoingCallConfiguration` provides access to all the [Action](/ui-kit/react/v4/outgoing-call#actions), [Filters](/ui-kit/react/v4/outgoing-call#filters), [Styles](/ui-kit/react/v4/outgoing-call#style), [Functionality](/ui-kit/react/v4/outgoing-call#functionality), and [Advanced](/ui-kit/react/v4/outgoing-call#functionality) properties of the [OutGoingCall](/ui-kit/react/v4/outgoing-call) component.

<Info>
  Please note that the properties marked with the [report]() symbol are not accessible within the Configuration Object.
</Info>

**Example**

<Frame>
  <img src="https://mintcdn.com/cometchat-22654f5b-docs-rn-guide-message-privately/le8ibYc8lBJsShSE/images/55a39518-call_buttons_outgoingcall_configuration-a36a9fabe67b0df581152d208f9bb420.png?fit=max&auto=format&n=le8ibYc8lBJsShSE&q=85&s=8a1776b6eae027dfea693db52c6ef372" width="3597" height="2398" data-path="images/55a39518-call_buttons_outgoingcall_configuration-a36a9fabe67b0df581152d208f9bb420.png" />
</Frame>

In this example, we will be changing the background color of [OutGoingCall](/ui-kit/react/v4/outgoing-call) component using `OutGoingCallConfiguration`.

<Tabs>
  <Tab title="TypeScript">
    CallButtonsDemo.tsx

    ```typescript theme={null}
    import { CometChat } from "@cometchat/chat-sdk-javascript";
    import { CometChatCallButtons, OutGoingCallConfiguration } from "@cometchat/chat-uikit-react";
    import React from "react";

    const CallButtonDemo = () => {
      const [chatUser, setChatUser] = React.useState<CometChat.User>();
      React.useEffect(() => {
        CometChat.getUser("uid").then((user) => {
          setChatUser(user);
        });
      }, []);

      return (
        <CometChatCallButtons
          user={chatUser}
          outgoingCallConfiguration={new OutgoingCallConfiguration({
            outgoingCallStyle: {
              background: '#efebff',
              border: '4px solid #ab94ff',
            },
          })}
        />
      );
    };

    export default CallButtonDemo;
    ```
  </Tab>

  <Tab title="JavaScript">
    CallButtonsDemo.jsx

    ```javascript theme={null}
    import React, { useState, useEffect } from "react";
    import { CometChat } from "@cometchat/chat-sdk-javascript";
    import { CometChatCallButtons, OutgoingCallConfiguration } from "@cometchat/chat-uikit-react";

    const CallButtonDemo = () => {
      const [chatUser, setChatUser] = useState(null);

      useEffect(() => {
        CometChat.getUser("uid").then((user) => {
          setChatUser(user);
        });
      }, []);

      return (
        <CometChatCallButtons
          user={chatUser}
          outgoingCallConfiguration={new OutgoingCallConfiguration({
            outgoingCallStyle: {
              background: '#efebff',
              border: '4px solid #ab94ff',
            },
          })}
        />
      );
    };

    export default CallButtonDemo;
    ```
  </Tab>
</Tabs>

***