io.emit in io.on('connection') causes never-ending repeating connections.

[legop3]

Hello, I have started making a simple webpage and I plan on using socket.io for simple communication between the client and server. Right now all that I have is a simple server and client that logs when someone connects or disconnects from any client, so this means I have:
io.on('connection', (socket) => { io.emit("join", socket.id)
on my server and:
socket.on("join", (id) => { console.log(user ${id} added);
on my client. The line io.emit("join", socket.id) is making the console on both the server and client fill up with connection messages, each with their own ID, just from one client being connected once. There is no other javascript on my client that would make it refresh or reconnect for any reason.

Thank you for the information, I am stuck on this and my professional programmer friend couldn't figure it out either :).