Why doesn't socket.io display messages?

Question

JavaScript

Hello!

According to the documentation, I tried to write a chat on sockets, but I ran into a problem that a message sent from another tab is not displayed on the previous one, although it should, sort of. Why is that, and how to fix it?

Client side: https://pastebin.com/u3pPRqU0
Server side: https://pastebin.com/8WTC1PS1

Answer 1

socket.broadcast.emit('add message', {message: msg});