JSFiddle - React, Tailwind, and code Playground

JavaScript

// Client call
$.ajax({
  "url": "http://127.0.0.1:2013",
  "type": "GET",
  "dataType": "json",
  "contentType": "application/json"
}).done(function(){
  console.log("SUCCESS")
}).fail(function(){
  console.log("ERROR");
});

// Nodejs Server code
var http = require('http');

http.createServer(function (req, res) {
  res.writeHead(204, {
    "Access-Control-Allow-Headers":"Authorization, Content-Type",
    "Access-Control-Allow-Methods": "PUT, GET, POST, DELETE, OPTIONS",
    "Access-Control-Allow-Origin": "*"
  });
  res.end();
}).listen(2013, '127.0.0.1');