Simple node.js server example with cors enabled

server-cors.js

const http = require('http')

const Countries = [
  'Turkey', 'Italy', 'Germany'
]

const app = http.createServer((req, res) => {
  res.setHeader("Access-Control-Allow-Origin", "*");
  res.writeHead(200, { 'Content-Type': 'application/json' })
  res.end(JSON.stringify(Countries));
})

app.listen(3001)