Resources

Essential references, guides, and tools for JavaScript SDK development

Quick Reference for AI Agents & Developers

// Key listener types
CometChat.addMessageListener(id, listener);      // Messages, typing, receipts
CometChat.addUserListener(id, listener);         // User presence
CometChat.addGroupListener(id, listener);        // Group events
CometChat.addCallListener(id, listener);         // Call events
CometChat.addConnectionListener(id, listener);   // WebSocket status
CometChat.addLoginListener(id, listener);        // Auth state

// Message categories
CometChat.CATEGORY_MESSAGE      // text, image, video, audio, file
CometChat.CATEGORY_CUSTOM       // custom types
CometChat.CATEGORY_ACTION       // system events
CometChat.CATEGORY_CALL         // call messages
CometChat.CATEGORY_INTERACTIVE  // forms, cards

Access comprehensive resources to help you build, debug, and optimize your CometChat integration.

Quick Reference

All Real-Time Listeners

Complete reference for all event listeners available in the SDK

Message Structure

Understand message types, properties, and hierarchy

Rate Limits

API rate limits and best practices for high-volume apps

Changelog

Latest SDK updates, features, and bug fixes

Migration & Upgrades

Upgrading from V3

Step-by-step guide to migrate from SDK v3 to v4

Event Listeners Reference

The SDK provides real-time listeners for all chat events:

Listener Type	Purpose	Key Events
Message Listener	Incoming messages	onTextMessageReceived, onMediaMessageReceived
User Listener	User status changes	onUserOnline, onUserOffline
Group Listener	Group updates	onGroupMemberJoined, onGroupMemberLeft
Call Listener	Call events	onIncomingCallReceived, onOutgoingCallAccepted
Connection Listener	WebSocket status	onConnected, onDisconnected
Login Listener	Auth state	onLoginSuccess, onLogout

External Resources

GitHub Repository

Source code, issues, and contributions

NPM Package

Package details and version history

Getting Help

Documentation

Start with the SDK Overview for a complete guide to all features.

Sample Apps

Explore our sample applications on GitHub for working implementations.

Support

Contact CometChat Support for technical assistance.

Next Steps

Real-Time Listeners

Master all event listeners

Message Structure

Understand message hierarchy