> ## 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.

# Leave A Group

> Leave A Group — CometChat documentation.

## Leave a Group

In order to stop receiving updates and messages for any particular joined group, you will have to leave the group using the `leaveGroup()` method.

<Tabs>
  <Tab title="JavaScript">
    ```javascript theme={null}
    var GUID = "GUID"; // guid of the group to join

    CometChat.leaveGroup(GUID).then(
      hasLeft => {
        console.log("Group left successfully:", hasLeft);
      }, error => {
        console.log("Group leaving failed with exception:", error);
      }
    );
    ```
  </Tab>

  <Tab title="TypeScript">
    ```typescript theme={null}
    var GUID: string = "GUID";

    CometChat.leaveGroup(GUID).then(
        (hasLeft: boolean) => {
            console.log("Group left successfully:", hasLeft);
        }, (error: CometChat.CometChatException) => {
            console.log("Group leaving failed with exception:", error);
        }
    );
    ```
  </Tab>
</Tabs>

| Parameter | Description                                  |
| --------- | -------------------------------------------- |
| `GUID`    | The UID of the group you would like to leave |

Once a group is left, the user will no longer receive any updates or messages pertaining to the group.

## Real-time Group Member Left Events

*In other words, as a member of a group, how do I know if someone has left it?*

If a user leaves any group, The members of the group receive a real-time event in the `onGroupMemberLeft()` method of the `GroupListener` class.

<Tabs>
  <Tab title="JavaScript">
    ```javascript theme={null}
    CometChat.addGroupListener(
        "UNIQUE_LISTENER_ID",
        new CometChat.GroupListener({
            onGroupMemberLeft: (message, leavingUser, group) => {
                console.log("User left", { message, leavingUser, group });
            }
        })
    );
    ```
  </Tab>

  <Tab title="TypeScript">
    ```typescript theme={null}
    CometChat.addGroupListener(
        "UNIQUE_LISTENER_ID",
        new CometChat.GroupListener({
            onGroupMemberLeft: (message: CometChat.Action, leavingUser: CometChat.User, group: CometChat.Group) => {
                console.log("User left", { message, leavingUser, group });
            }
        })
    );
    ```
  </Tab>
</Tabs>

## Missed Group Member Left Events

*In other words, as a member of a group, how do I know if someone has left it when my app is not running?*

When you retrieve the list of previous messages if a member has left any group that the logged-in user is a member of, the list of messages will contain an `Action` message. An `Action` message is a sub-class of `BaseMessage` class.

For the group member left event, in the `Action` object received, the following fields can help you get the relevant information-

1. `action` - `left`
2. `actionBy` - User object containing the details of the user who left the group
3. `actionFor` - Group object containing the details of the group the user has left