NodeCode

client.js

var twitter_config_model = {
	track: ko.observable(''),
	follow: ko.observable(''),
	locations: ko.observable(''),
	onSave: function(formElement){
		$.ajax({
			url: "http://localhost:8080/trinity/configure",
			type: "PUT",
			data: ko.toJSON(this),
			headers: {'Origin':'http://localhost'},
			success: function() {
				alert('worked!');
			},
			error: function(xhr, status, error){
				alert(xhr.status);
			}
		});
	}
};
ko.applyBindings(twitter_config_model);

server.js

var server = require('express').createServer().listen('8080');

server.post('/trinity/configure',function(req,res){
	res.header("Access-Control-Allow-Origin", "htt://localhost");
    res.header("Access-Control-Allow-Headers", "X-Requested-With");
	res.send('Hello', 200);
});

these are my client and server files. I've included the cors headers I think I need and it's still not working, do you see why?

btw, I did notice the type was wrong in the client call (was PUT should be POST). I corrected it but it still fails. :-(