text: const http = require('http');
  
  const hostname = '127.0.0.1';
  const port = 3000;
  
  const server = http.createServer((req, res) =>{
      res.statusCode = 200;
      res.setHeader('content_Type', 'text/plain');
      res.end('Welcome to node.js!');
  });
  
  server.listen(port, hostname, () => {
      console.log('Server running at http://${hostname}:${port}/');
  })