index.js

// hookup to PRS system
app.post("/prs", function(req, res) {
  var ip_addr = req.headers['x-forwarded-for'] || req.connection.remoteAddress;

  console.log("PRS Request: " + JSON.stringify(req.body));

  // get username
  var username = ut.check_session(Number(req.body.sessionId), ip_addr);
  if (username) {
    // pull all parameters from req.body and put them in args
    var args = {};
    for (var key in req.body)
      args[key] = req.body[key];
    prs.request(args["name"], username, args, function(result) {
      res.send(JSON.stringify(result));
    });
  } else {
    res.send(JSON.stringify({not_logged_in: true, result: false}));
  }
});

prs.js

// sending xmlhttprequests to the server and receiving data in return
// need to include: js/cookie.js
var prsRequest = function(name, args, next) {
  // set up a form data with everything needed
  var fData = new FormData();
  fData.append('name', name);
  fData.append('sessionId', getCookie('sessionId'));
  for (var key in args)
    fData.append(key, args[key]);
 
  // create callback
  var xhrCallback = function() {
    console.log(this.responseText);
    var result = JSON.parse(this.responseText);
    next(result);
  };
 
  // create XMLHttpRequest
  console.log("Sending PRS Request...");
  var req = new XMLHttpRequest();
  req.onload = xhrCallback;
  req.open("POST", "/prs");
  req.send(fData);
};