socket.emit() vs. socket.send()

Question

What\'s the difference between these two?

I noticed that if I changed from socket.emit to socket.send in a working program, the server fail

Answer 1

https://socket.io/docs/client-api/#socket-send-args-ack

socket.send // Sends a message event

socket.emit(eventName[, ...args][, ack]) // you can custom eventName