I'm trying to do a fetch from backbone.js to my node.js server. However, I get the following error in the console:

Origin http://localhost is not allowed by Access-Control-Allow-Origin.

I added the following to my node.js server:

var allowCrossDomain = function(req, res, next) {

    res.header('Access-Control-Allow-Origin', http://localhost);

    res.header('Access-Control-Allow-Methods', 'GET,PUT,POST,DELETE');

    res.header('Access-Control-Allow-Headers', 'Content-Type');

};



app.configure(function() {

    app.use(allowCrossDomain);

});

But it's still returning the same error. However, even if this did work, it doesn't seem like the ideal solution, as I would like users from all over to be able to send requests.