Receive Acknowledgements in the Browser
On the client side, pass a callback as the final argument to socket.emit().
The callback receives the object returned by the server.
Update the message submission logic to display the acknowledgement result.
Client Acknowledgement
socket.emit('chat:send', {
username,
message
}, (response) => {
if (!response.success) {
console.error(response.error);
return;
}
console.log(response.message);
});The callback receives the acknowledgement returned by the server and allows the frontend to handle successful and failed submissions.
Key Takeaways
The client can pass an acknowledgement callback to socket.emit().
The server controls when the acknowledgement is returned.
Acknowledgements help implement responsive user interfaces.