Re: [nodejs] Problem with using socket.io

[Dan Milon]

Probably the browser (for some reason) did not fetch the socket.io.js
file, so the global variable "io" does not exist.

Make sure the server returns the file, and the client can talk to the
server.

danmilon.

On 11/01/2012 11:12 PM, _Kili_ wrote:
> Hi,
> I am beginner with node.js and just trying to make socket.io work with
> this guide http://socket.io/#how-to-use (the first example).
> I am just getting "Uncaught ReferenceError: io is not defined" in the
> java script console of the Chrome.
> Could someone help me?
>
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[Angel Java Lopez]

Hmmm... you must open the index.html as

http://localhost/index.html

I guess you cannot start it as a local file

[Chad Engler]

You may get more response form the Socket.io mailing list:

 

sock...@googlegroups.com

 

-Chad

[_Kili_]

Thanks, I posted the same question to the correct group. I did not yet solve the problem with the help in the previous answers. Thanks for the quick replies.

[John Fitzgerald]

Try this for the html, loads socket.io from a CDN. (Works on my computer...)

<script src="//cdnjs.cloudflare.com/ajax/libs/socket.io/0.9.10/socket.io.min.js"></script>

<script>

  var socket = io.connect('http://localhost');

  socket.on('news', function (data) {

    console.log(data);

    socket.emit('my other event', { my: 'data' });

  });

</script>

John R. Fitzgerald

[_Kili_]

Thanks John,

The io is now found but I am getting this:

XMLHttpRequest cannot load http://localhost:8080/socket.io/1/?t=1351888164983. Origin http://127.0.0.1:8080 is not allowed by Access-Control-Allow-Origin.

[Angel Java Lopez]

Hmmmm... Then, it's not the same example that you pointed initially, at http://socket.io/#how-to-use the port is 80.

What is the URL in your browser, when you launch the index.html?

[_Kili_]

Thanks guys,

It's working now.