Request callback Titanium

index.js

var request = Titanium.Network.createHTTPClient();
var done=false;
request.onload = function() {
    try {
      if (this.readyState == 4 || !done) {
        done=true;
        if(this.status===200){
            var content = JSON.parse(this.responseText);

            }else{
        alert('error code' + this.status);
        }
      }
    }
    catch (err) {
      Titanium.API.error(err);
      Titanium.UI.createAlertDialog({
      message : err,
      title : 'Remote Server Error',
      });
    }
  };
request.onerror = function(e) {
    Ti.API.info(e.error);
};

request.open("POST", "http://test.com");

request.setRequestHeader("Content-Type","application/x-www-form-urlencoded");

request.send({ test: 'test'});

// Sources: http://stackoverflow.com/questions/26773261/how-we-get-and-post-api-in-titanium-alloy