Node.js receives POST request yet gives client side error

I am successfully sending POST requests to a node.js server running on port 8080 via AJAX:

$.ajax({
    url: 'http://127.0.0.1:8080',
    type: 'post',
    dataType: 'text',
    data: 'test'
});

I than can read and work with the data server side using event listeners on the request:

request.setEncoding('utf8');

request.addListener('data', function(chunk) {
   console.log(chunk);
});

request.addListener('end', function() {
   response.end();
});

However I still get an error on my client side like the AJAX call was unsuccessful. The error I get is:

XMLHttpRequest cannot load http://127.0.0.1:8080/. Origin http://127.0.0.1 is not allowed by Access-Control-Allow-Origin.

I also noticed that there is no response and the headers are missing as well.