Ajax post response from express js keeps throwing error

Question

I am having a real hard time standing up bidirectional data transfer from a html page to my node.js application and then back to the html page.

I\'m pretty sure I\'m

Answer 1

In my case adding this to the app.js works.

app.use(function(req, res, next) {
  res.header("Access-Control-Allow-Origin", "*");
  res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
  next();
});

https://enable-cors.org/server_expressjs.html