# channels.joinChannel

Join a channel/supergroup

## Example

{% tabs %}
{% tab title="Javascript" %}

```javascript
const {Api, TelegramClient} = require('telegram');
const {StringSession} = require('telegram/sessions');

const session = new StringSession('');
const client = new TelegramClient(session, apiId, apiHash, {});

(async function run() {
    const result = await client.invoke(new Api.channels.joinChannel({
        channel: new Api.InputChannel({...}),
        }));
    console.log(result); // prints the result
})();
```

{% endtab %}

{% tab title="TypeScript" %}

```typescript
import {Api, TelegramClient} from 'telegram';
import {StringSession} from 'telegram/sessions';

const session = new StringSession('');
const client = new TelegramClient(session, apiId, apiHash, {});

(async function run() {
    const result: Api.Updates = await client.invoke(new Api.channels.joinChannel({
        channel: new Api.InputChannel({...}),
        }));
    console.log(result); // prints the result
})();
```

{% endtab %}
{% endtabs %}

## TL schema

```
updatesTooLong#e317af7e = Updates;
updateShortMessage#2296d2c8 flags:# out:flags.1?true mentioned:flags.4?true media_unread:flags.5?true silent:flags.13?true id:int user_id:int message:string pts:int pts_count:int date:int fwd_from:flags.2?MessageFwdHeader via_bot_id:flags.11?int reply_to:flags.3?MessageReplyHeader entities:flags.7?Vector<MessageEntity> = Updates;
updateShortChatMessage#402d5dbb flags:# out:flags.1?true mentioned:flags.4?true media_unread:flags.5?true silent:flags.13?true id:int from_id:int chat_id:int message:string pts:int pts_count:int date:int fwd_from:flags.2?MessageFwdHeader via_bot_id:flags.11?int reply_to:flags.3?MessageReplyHeader entities:flags.7?Vector<MessageEntity> = Updates;
updateShort#78d4dec1 update:Update date:int = Updates;
updatesCombined#725b04c3 updates:Vector<Update> users:Vector<User> chats:Vector<Chat> date:int seq_start:int seq:int = Updates;
updates#74ae4240 updates:Vector<Update> users:Vector<User> chats:Vector<Chat> date:int seq:int = Updates;
updateShortSentMessage#11f1331c flags:# out:flags.1?true id:int pts:int pts_count:int date:int media:flags.9?MessageMedia entities:flags.7?Vector<MessageEntity> = Updates;
---functions---
channels.joinChannel#24b524c5 channel:InputChannel = Updates;
```

## Parameters

|     Name    | Type                                                        | Description                |
| :---------: | ----------------------------------------------------------- | -------------------------- |
| **channel** | [InputChannel](https://core.telegram.org/type/InputChannel) | Channel/supergroup to join |

## Result

[Updates](https://core.telegram.org/type/Updates)

## Possible errors

| Code | Type                       | Description                                                                   |
| :--: | -------------------------- | ----------------------------------------------------------------------------- |
|  400 | CHANNELS\_TOO\_MUCH        | You have joined too many channels/supergroups                                 |
|  400 | CHANNEL\_INVALID           | The provided channel is invalid                                               |
|  400 | CHANNEL\_PRIVATE           | You haven't joined this channel/supergroup                                    |
|  400 | INVITE\_HASH\_EMPTY        | The invite hash is empty                                                      |
|  400 | INVITE\_HASH\_EXPIRED      | The invite link has expired                                                   |
|  400 | INVITE\_HASH\_INVALID      | The invite hash is invalid                                                    |
|  400 | MSG\_ID\_INVALID           | Invalid message ID provided                                                   |
|  400 | PEER\_ID\_INVALID          | The provided peer id is invalid                                               |
|  400 | USERS\_TOO\_MUCH           | The maximum number of users has been exceeded (to create a chat, for example) |
|  400 | USER\_ALREADY\_PARTICIPANT | The user is already in the group                                              |
|  400 | USER\_CHANNELS\_TOO\_MUCH  | One of the users you tried to add is already in too many channels/supergroups |

## Can bots use this methd ?

### yes

## Related pages