Socket.io event not firing

I am facing a problem while trying out a socket.io beginner's tutorial, I followed this tutorial https://socket.io/get-started/chat/

Everything seems to be okay till the very last thing, when they build a chat app, and when you hit submit in textbox, it updates the contents of the element.

I can see the messages getting printed in the node js console, but nothing in chrome's console. I also tried debugging it using developer options, but the control just never goes in this method in the index.html.

socket.on('chat message', function(msg){

Can someone please help ? I am really new to socket.io and nodejs. Thanks

via MithunS