Send Messages

Send text, media, and custom messages to users and groups using the CometChat JavaScript SDK.

AI Integration Quick Reference

Field	Value
Key Classes	TextMessage, MediaMessage, CustomMessage
Key Methods	sendMessage(), sendMediaMessage(), sendCustomMessage()
Receiver Types	CometChat.RECEIVER_TYPE.USER, CometChat.RECEIVER_TYPE.GROUP
Message Types	TEXT, IMAGE, VIDEO, AUDIO, FILE, CUSTOM
Prerequisites	SDK initialized, user logged in

CometChat supports three types of messages:

Type	Method	Use Case
Text	sendMessage()	Plain text messages
Media	sendMediaMessage()	Images, videos, audio, files
Custom	sendCustomMessage()	Location, polls, or any JSON data

Text Message

Send a text message using CometChat.sendMessage() with a TextMessage object.

TypeScript (User)

let receiverID: string = "UID",
  messageText: string = "Hello world!",
  receiverType: string = CometChat.RECEIVER_TYPE.USER,
  textMessage: CometChat.TextMessage = new CometChat.TextMessage(
    receiverID,
    messageText,
    receiverType
  );

CometChat.sendMessage(textMessage).then(
  (message: CometChat.TextMessage) => {
    console.log("Message sent successfully:", message);
  },
  (error: CometChat.CometChatException) => {
    console.log("Message sending failed with error:", error);
  }
);

JavaScript (User)

let receiverID = "UID";
let messageText = "Hello world!";
let receiverType = CometChat.RECEIVER_TYPE.USER;
let textMessage = new CometChat.TextMessage(
  receiverID,
  messageText,
  receiverType
);

CometChat.sendMessage(textMessage).then(
  (message) => {
    console.log("Message sent successfully:", message);
  },
  (error) => {
    console.log("Message sending failed with error:", error);
  }
);

Alternatively, you can use the async/await syntax:

try {
  const receiverID = "UID";
  const messageText = "Hello world!";
  const receiverType = CometChat.RECEIVER_TYPE.USER;
  const textMessage = new CometChat.TextMessage(
    receiverID,
    messageText,
    receiverType
  );

  const message = await CometChat.sendMessage(textMessage);
  console.log("Message sent successfully:", message);
} catch (error) {
  console.log("Message sending failed with error:", error);
}

TypeScript (Group)

let receiverID: string = "GUID",
  messageText: string = "Hello world!",
  receiverType: string = CometChat.RECEIVER_TYPE.GROUP,
  textMessage: CometChat.TextMessage = new CometChat.TextMessage(
    receiverID,
    messageText,
    receiverType
  );

CometChat.sendMessage(textMessage).then(
  (message: CometChat.TextMessage) => {
    console.log("Message sent successfully:", message);
  },
  (error: CometChat.CometChatException) => {
    console.log("Message sending failed with error:", error);
  }
);

JavaScript (Group)

let receiverID = "GUID";
let messageText = "Hello world!";
let receiverType = CometChat.RECEIVER_TYPE.GROUP;
let textMessage = new CometChat.TextMessage(
  receiverID,
  messageText,
  receiverType
);

CometChat.sendMessage(textMessage).then(
  (message) => {
    console.log("Message sent successfully:", message);
  },
  (error) => {
    console.log("Message sending failed with error:", error);
  }
);

The TextMessage class constructor takes the following parameters:

Parameter	Description	Required
receiverID	UID of the user or GUID of the group receiving the message	Yes
messageText	The text message content	Yes
receiverType	CometChat.RECEIVER_TYPE.USER or CometChat.RECEIVER_TYPE.GROUP	Yes

On success, sendMessage() method returns a TextMessage | MediaMessage | CustomMessage | BaseMessage object depending on the input message type.

Media Message

Send images, videos, audio, or files using CometChat.sendMediaMessage().

There are two ways to send media messages:

1. Upload a file — Pass a file object and CometChat uploads it automatically
2. Send a URL — Provide a URL to media hosted on your server or cloud storage

Upload a File

Get the file from an input element and pass it to MediaMessage:

<input type="file" name="img_file" id="img_file" />

TypeScript (User)

let receiverID: string = "UID",
  messageType: string = CometChat.MESSAGE_TYPE.IMAGE,
  receiverType: string = CometChat.RECEIVER_TYPE.USER,
  file: File = (document.getElementById("img_file") as HTMLInputElement).files![0];

let mediaMessage: CometChat.MediaMessage = new CometChat.MediaMessage(
  receiverID,
  file,
  messageType,
  receiverType
);

CometChat.sendMediaMessage(mediaMessage).then(
  (message: CometChat.MediaMessage) => {
    console.log("Media message sent successfully", message);
  },
  (error: CometChat.CometChatException) => {
    console.log("Media message sending failed with error", error);
  }
);

JavaScript (User)

let receiverID = "UID";
let messageType = CometChat.MESSAGE_TYPE.IMAGE;
let receiverType = CometChat.RECEIVER_TYPE.USER;
let file = document.getElementById("img_file").files[0];

let mediaMessage = new CometChat.MediaMessage(
  receiverID,
  file,
  messageType,
  receiverType
);

CometChat.sendMediaMessage(mediaMessage).then(
  (message) => {
    console.log("Media message sent successfully", message);
  },
  (error) => {
    console.log("Media message sending failed with error", error);
  }
);

TypeScript (Group)

let receiverID: string = "GUID",
  messageType: string = CometChat.MESSAGE_TYPE.IMAGE,
  receiverType: string = CometChat.RECEIVER_TYPE.GROUP,
  file: File = (document.getElementById("img_file") as HTMLInputElement).files![0];

let mediaMessage: CometChat.MediaMessage = new CometChat.MediaMessage(
  receiverID,
  file,
  messageType,
  receiverType
);

CometChat.sendMediaMessage(mediaMessage).then(
  (message: CometChat.MediaMessage) => {
    console.log("Media message sent successfully", message);
  },
  (error: CometChat.CometChatException) => {
    console.log("Media message sending failed with error", error);
  }
);

JavaScript (Group)

let receiverID = "GUID";
let messageType = CometChat.MESSAGE_TYPE.IMAGE;
let receiverType = CometChat.RECEIVER_TYPE.GROUP;
let file = document.getElementById("img_file").files[0];

let mediaMessage = new CometChat.MediaMessage(
  receiverID,
  file,
  messageType,
  receiverType
);

CometChat.sendMediaMessage(mediaMessage).then(
  (message) => {
    console.log("Media message sent successfully", message);
  },
  (error) => {
    console.log("Media message sending failed with error", error);
  }
);

Send a URL

Send media hosted on your server or cloud storage using the Attachment class:

TypeScript (User)

let receiverID: string = "UID",
  messageType: string = CometChat.MESSAGE_TYPE.IMAGE,
  receiverType: string = CometChat.RECEIVER_TYPE.USER,
  mediaMessage: CometChat.MediaMessage = new CometChat.MediaMessage(
    receiverID,
    "",
    messageType,
    receiverType
  );

let file: Object = {
  name: "mario",
  extension: "png",
  mimeType: "image/png",
  url: "https://pngimg.com/uploads/mario/mario_PNG125.png",
};

let attachment: CometChat.Attachment = new CometChat.Attachment(file);
mediaMessage.setAttachment(attachment);

CometChat.sendMediaMessage(mediaMessage).then(
  (message: CometChat.MediaMessage) => {
    console.log("Media message sent successfully", message);
  },
  (error: CometChat.CometChatException) => {
    console.log("Media message sending failed with error", error);
  }
);

JavaScript (User)

let receiverID = "UID";
let messageType = CometChat.MESSAGE_TYPE.IMAGE;
let receiverType = CometChat.RECEIVER_TYPE.USER;
let mediaMessage = new CometChat.MediaMessage(
  receiverID,
  "",
  messageType,
  receiverType
);

let file = {
  name: "mario",
  extension: "png",
  mimeType: "image/png",
  url: "https://pngimg.com/uploads/mario/mario_PNG125.png",
};

let attachment = new CometChat.Attachment(file);
mediaMessage.setAttachment(attachment);

CometChat.sendMediaMessage(mediaMessage).then(
  (message) => {
    console.log("Media message sent successfully", message);
  },
  (error) => {
    console.log("Media message sending failed with error", error);
  }
);

TypeScript (Group)

let receiverID: string = "GUID",
  messageType: string = CometChat.MESSAGE_TYPE.IMAGE,
  receiverType: string = CometChat.RECEIVER_TYPE.GROUP,
  mediaMessage: CometChat.MediaMessage = new CometChat.MediaMessage(
    receiverID,
    "",
    messageType,
    receiverType
  );

let file: Object = {
  name: "mario",
  extension: "png",
  mimeType: "image/png",
  url: "https://pngimg.com/uploads/mario/mario_PNG125.png",
};

let attachment: CometChat.Attachment = new CometChat.Attachment(file);
mediaMessage.setAttachment(attachment);

CometChat.sendMediaMessage(mediaMessage).then(
  (message: CometChat.MediaMessage) => {
    console.log("Media message sent successfully", message);
  },
  (error: CometChat.CometChatException) => {
    console.log("Media message sending failed with error", error);
  }
);

JavaScript (Group)

let receiverID = "GUID";
let messageType = CometChat.MESSAGE_TYPE.IMAGE;
let receiverType = CometChat.RECEIVER_TYPE.GROUP;
let mediaMessage = new CometChat.MediaMessage(
  receiverID,
  "",
  messageType,
  receiverType
);

let file = {
  name: "mario",
  extension: "png",
  mimeType: "image/png",
  url: "https://pngimg.com/uploads/mario/mario_PNG125.png",
};

let attachment = new CometChat.Attachment(file);
mediaMessage.setAttachment(attachment);

CometChat.sendMediaMessage(mediaMessage).then(
  (message) => {
    console.log("Media message sent successfully", message);
  },
  (error) => {
    console.log("Media message sending failed with error", error);
  }
);

The MediaMessage class constructor takes the following parameters:

Parameter	Description	Required
receiverID	UID of the user or GUID of the group	Yes
file	File object to upload, or empty string if using URL	Yes
messageType	CometChat.MESSAGE_TYPE.IMAGE, VIDEO, AUDIO, or FILE	Yes
receiverType	CometChat.RECEIVER_TYPE.USER or GROUP	Yes

On success, sendMediaMessage() returns a MediaMessage object.

Add Caption

Add text along with the media:

TypeScript

mediaMessage.setCaption("Check out this photo!");

JavaScript

mediaMessage.setCaption("Check out this photo!");

Add Metadata and Tags

Same as text messages:

mediaMessage.setMetadata({ location: "Paris" });
mediaMessage.setTags(["vacation"]);
mediaMessage.setQuotedMessageId(10);

The sendMediaMessage() method returns a MediaMessage object.

Multiple Attachments in a Media Message

Starting version 3.0.9 & above the SDK supports sending multiple attachments in a single media message. As in the case of a single attachment in a media message, there are two ways you can send Media Messages using the CometChat SDK:

1. By providing an array of files: You can now share an array of files while creating an object of the MediaMessage class. When the media message is sent using the sendMediaMessage() method, the files are uploaded to the CometChat servers & the URL of the files is sent in the success response of the sendMediaMessage() method.

Getting files:

html

<html>
  <body>
    <input type="file" name="img_file" id="img_file" />
    <script>
      const UID = "UID";
      const files = document.getElementById("img_file").files;
      const fileType = MESSAGE_TYPE.IMAGE;
      const userType = CometChat.RECEIVER_TYPE.USER;
      const mediaMessage = new MediaMessage(UID, files, fileType, userType);
    </script>
  </body>
</html>

TypeScript (User)

let receiverID: string = "UID",
  messageType: string = CometChat.MESSAGE_TYPE.FILE,
  receiverType: string = CometChat.RECEIVER_TYPE.USER,
  files: FileList = (document.getElementById("img_file") as HTMLInputElement).files!;

let mediaMessage: CometChat.MediaMessage = new CometChat.MediaMessage(
  receiverID,
  files,
  messageType,
  receiverType
);

CometChat.sendMediaMessage(mediaMessage).then(
  (message: CometChat.MediaMessage) => {
    console.log("Media message sent successfully", message);
  },
  (error: CometChat.CometChatException) => {
    console.log("Media message sending failed with error", error);
  }
);

JavaScript (User)

let receiverID = "UID";
let messageType = CometChat.MESSAGE_TYPE.FILE;
let receiverType = CometChat.RECEIVER_TYPE.USER;
let mediaMessage = new CometChat.MediaMessage(
  receiverID,
  files,
  messageType,
  receiverType
);

CometChat.sendMediaMessage(mediaMessage).then(
  (message) => {
    console.log("Media message sent successfully", message);
  },
  (error) => {
    console.log("Media message sending failed with error", error);
  }
);

TypeScript (Group)

let receiverID: string = "GUID",
  messageType: string = CometChat.MESSAGE_TYPE.FILE,
  receiverType: string = CometChat.RECEIVER_TYPE.GROUP,
  files: FileList = (document.getElementById("img_file") as HTMLInputElement).files!;

let mediaMessage: CometChat.MediaMessage = new CometChat.MediaMessage(
  receiverID,
  files,
  messageType,
  receiverType
);

CometChat.sendMediaMessage(mediaMessage).then(
  (message: CometChat.MediaMessage) => {
    console.log("Media message sent successfully", message);
  },
  (error: CometChat.CometChatException) => {
    console.log("Media message sending failed with error", error);
  }
);

JavaScript (Group)

let receiverID = "GUID";
let messageType = CometChat.MESSAGE_TYPE.FILE;
let receiverType = CometChat.RECEIVER_TYPE.GROUP;
let files = document.getElementById("img_file").files;

let mediaMessage = new CometChat.MediaMessage(
  receiverID,
  files,
  messageType,
  receiverType
);

CometChat.sendMediaMessage(mediaMessage).then(
  (message) => {
    console.log("Media message sent successfully", message);
  },
  (error) => {
    console.log("Media message sending failed with error", error);
  }
);

Send Multiple URLs

TypeScript (User)

let receiverID: string = "UID",
  messageType: string = CometChat.MESSAGE_TYPE.IMAGE,
  receiverType: string = CometChat.RECEIVER_TYPE.USER,
  mediaMessage: CometChat.MediaMessage = new CometChat.MediaMessage(
    receiverID,
    "",
    messageType,
    receiverType
  );

let attachment1: Object = {
  name: "mario",
  extension: "png",
  mimeType: "image/png",
  url: "https://pngimg.com/uploads/mario/mario_PNG125.png",
};

let attachment2: Object = {
  name: "jaguar",
  extension: "png",
  mimeType: "image/png",
  url: "https://pngimg.com/uploads/jaguar/jaguar_PNG20759.png",
};

let attachments: Array<CometChat.Attachment> = [];
attachments.push(new CometChat.Attachment(attachment1));
attachments.push(new CometChat.Attachment(attachment2));

mediaMessage.setAttachments(attachments);

CometChat.sendMediaMessage(mediaMessage).then(
  (message: CometChat.MediaMessage) => {
    console.log("Media message sent successfully", message);
  },
  (error: CometChat.CometChatException) => {
    console.log("Media message sending failed with error", error);
  }
);

JavaScript (User)

let receiverID = "UID";
let messageType = CometChat.MESSAGE_TYPE.IMAGE;
let receiverType = CometChat.RECEIVER_TYPE.USER;
let mediaMessage = new CometChat.MediaMessage(
  receiverID,
  "",
  messageType,
  receiverType
);

let attachment1 = {
  name: "mario",
  extension: "png",
  mimeType: "image/png",
  url: "https://pngimg.com/uploads/mario/mario_PNG125.png",
};

let attachment2 = {
  name: "jaguar",
  extension: "png",
  mimeType: "image/png",
  url: "https://pngimg.com/uploads/jaguar/jaguar_PNG20759.png",
};

let attachments = [];
attachments.push(new CometChat.Attachment(attachment1));
attachments.push(new CometChat.Attachment(attachment2));

mediaMessage.setAttachments(attachments);

CometChat.sendMediaMessage(mediaMessage).then(
  (message) => {
    console.log("Media message sent successfully", message);
  },
  (error) => {
    console.log("Media message sending failed with error", error);
  }
);

TypeScript (Group)

let receiverID: string = "GUID",
  messageType: string = CometChat.MESSAGE_TYPE.IMAGE,
  receiverType: string = CometChat.RECEIVER_TYPE.GROUP,
  mediaMessage: CometChat.MediaMessage = new CometChat.MediaMessage(
    receiverID,
    "",
    messageType,
    receiverType
  );

let attachment1: Object = {
  name: "mario",
  extension: "png",
  mimeType: "image/png",
  url: "https://pngimg.com/uploads/mario/mario_PNG125.png",
};

let attachment2: Object = {
  name: "jaguar",
  extension: "png",
  mimeType: "image/png",
  url: "https://pngimg.com/uploads/jaguar/jaguar_PNG20759.png",
};

let attachments: Array<CometChat.Attachment> = [];
attachments.push(new CometChat.Attachment(attachment1));
attachments.push(new CometChat.Attachment(attachment2));

mediaMessage.setAttachments(attachments);

CometChat.sendMediaMessage(mediaMessage).then(
  (message: CometChat.MediaMessage) => {
    console.log("Media message sent successfully", message);
  },
  (error: CometChat.CometChatException) => {
    console.log("Media message sending failed with error", error);
  }
);

JavaScript (Group)

let receiverID = "GUID";
let messageType = CometChat.MESSAGE_TYPE.IMAGE;
let receiverType = CometChat.RECEIVER_TYPE.GROUP;
let mediaMessage = new CometChat.MediaMessage(
  receiverID,
  "",
  messageType,
  receiverType
);

let attachment1 = {
  name: "mario",
  extension: "png",
  mimeType: "image/png",
  url: "https://pngimg.com/uploads/mario/mario_PNG125.png",
};

let attachment2 = {
  name: "jaguar",
  extension: "png",
  mimeType: "image/png",
  url: "https://pngimg.com/uploads/jaguar/jaguar_PNG20759.png",
};

let attachments = [];
attachments.push(new CometChat.Attachment(attachment1));
attachments.push(new CometChat.Attachment(attachment2));

mediaMessage.setAttachments(attachments);

CometChat.sendMediaMessage(mediaMessage).then(
  (message) => {
    console.log("Media message sent successfully", message);
  },
  (error) => {
    console.log("Media message sending failed with error", error);
  }
);

Custom Message

Send structured data that doesn’t fit text or media categories — like location coordinates, polls, or game moves.

TypeScript (User)

let receiverID: string = "UID",
  customData: Object = {
    latitude: "50.6192171633316",
    longitude: "-72.68182268750002",
  },
  customType: string = "location",
  receiverType: string = CometChat.RECEIVER_TYPE.USER,
  customMessage: CometChat.CustomMessage = new CometChat.CustomMessage(
    receiverID,
    receiverType,
    customType,
    customData
  );

CometChat.sendCustomMessage(customMessage).then(
  (message: CometChat.CustomMessage) => {
    console.log("Custom message sent successfully", message);
  },
  (error: CometChat.CometChatException) => {
    console.log("Custom message sending failed with error", error);
  }
);

JavaScript (User)

let receiverID = "UID";
let customData = {
  latitude: "50.6192171633316",
  longitude: "-72.68182268750002",
};
let customType = "location";
let receiverType = CometChat.RECEIVER_TYPE.USER;

let customMessage = new CometChat.CustomMessage(
  receiverID,
  receiverType,
  customType,
  customData
);

CometChat.sendCustomMessage(customMessage).then(
  (message) => {
    console.log("Custom message sent successfully", message);
  },
  (error) => {
    console.log("Custom message sending failed with error", error);
  }
);

TypeScript (Group)

let receiverID: string = "GUID",
  customData: Object = {
    latitude: "50.6192171633316",
    longitude: "-72.68182268750002",
  },
  customType: string = "location",
  receiverType: string = CometChat.RECEIVER_TYPE.GROUP,
  customMessage: CometChat.CustomMessage = new CometChat.CustomMessage(
    receiverID,
    receiverType,
    customType,
    customData
  );

CometChat.sendCustomMessage(customMessage).then(
  (message: CometChat.CustomMessage) => {
    console.log("Custom message sent successfully", message);
  },
  (error: CometChat.CometChatException) => {
    console.log("Custom message sending failed with error", error);
  }
);

JavaScript (Group)

let receiverID = "GUID";
let customData = {
  latitude: "50.6192171633316",
  longitude: "-72.68182268750002",
};
let customType = "location";
let receiverType = CometChat.RECEIVER_TYPE.GROUP;

let customMessage = new CometChat.CustomMessage(
  receiverID,
  receiverType,
  customType,
  customData
);

CometChat.sendCustomMessage(customMessage).then(
  (message) => {
    console.log("Custom message sent successfully", message);
  },
  (error) => {
    console.log("Custom message sending failed with error", error);
  }
);

The CustomMessage class constructor takes the following parameters:

Parameter	Description	Required
receiverID	UID of the user or GUID of the group	Yes
receiverType	CometChat.RECEIVER_TYPE.USER or GROUP	Yes
customType	Your custom type string (e.g., "location", "poll")	Yes
customData	JSON object with your custom data	Yes

On success, sendCustomMessage() returns a CustomMessage object.

Add Tags

customMessage.setTags(["starredMessage"]);

Quote a Message

customMessage.setQuotedMessageId(10);

Control Conversation Update

By default, custom messages update the conversation’s last message. To prevent this:

customMessage.shouldUpdateConversation(false);

Custom Notification Text

Set custom text for push, email, and SMS notifications:

customMessage.setConversationText("Shared a location");

The sendCustomMessage() method returns a CustomMessage object.

---

Next Steps

Receive Messages

Listen for incoming messages in real-time

Edit Message

Edit previously sent messages

Delete Message

Delete sent messages