[NodeJS] Express CORS

app.use(function(req, res, next) {

  res.header('Access-Control-Allow-Origin', '*');

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

  

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

  res.header('Access-Control-Allow-Method', 'POST');

  next();

});