sockjs-client is a browser JavaScript library that provides a WebSocket-like object. It enables cross-browser messaging and falls back to various browser-specific transports when WebSocket isn't available, ensuring reliable communication. SockJS presents a consistent programming interface over multiple protocols, simplifying real-time web application development by abstracting away the complexities of dealing with different browser WebSocket implementations or network conditions. It's a foundational piece for building robust and responsive web experiences.
