Advanced Node.js Development

The custom events in the chat app

Now that you know how to emit and listen to custom events, we're going to move on to creating two events that we'll actually use in the chat app. These are going to be newMessage and createMessage:

Now, for the chat app, we once again have our server, which is going to be the server we build; and we have our client, which is going to be a user who is in the chat app. There are most likely going to be multiple users who all want to communicate with each other.

Now, the first event we'll have is a newMessage event. This is going to be emitted by the server and listened to on the client:

When a new message comes ...