var express = require('express')
  , cors = require('cors')
  , app = express();

var corsOptions = {
  origin: 'http://example.com',
  optionsSuccessStatus: 200 // some legacy browsers (IE11, various SmartTVs) choke on 204
};

app.get('/products/:id', cors(corsOptions), function(req, res, next){
  res.json({msg: 'This is CORS-enabled for only example.com.'});
});

app.listen(80, function(){
  console.log('CORS-enabled web server listening on port 80');
});