Node server, Socket.io 'io is not defined'?

Question

I\'ve followed the exact same steps which have always previously worked for me, create application through express, place the module dependencies in the node_modules folder.

Answer 1

I solved this by running the index page by the Node.js server.

Most likely "index.html" and "/socket.io/socket.io.js" files should be served by your Node.js server.

as mentioned in the url Uncaught ReferenceError: io is not defined

So when I executed https://localhost:3000 (3000 the port where the nodejs has been started) the error got resolved.