Ejemplo de formulario

formulario.js

var http=require('http');
var url = require('url');
var qs = require('querystring');

var server = http.createServer(function(req, res) {
switch (req.method) {
 case 'POST': var body = '';
   req.on('data', function(data) {
     body += data;
     if (body.length > 1e6) req.connection.destroy();
     });
   req.on('end', function() {
      var POST = qs.parse(body);
      res.end("Hola " + POST.cliente + "! Tu email es:" + POST.correo);
     });
   break;
 case 'GET': if (url.parse(req.url, true).pathname == '/') {
    datos = "<form action=\"procesa\" method=\"POST\">"
          + "<label>Nombre: <input name=\"cliente\"></label><br>"
          + "<label>Email: <input name=\"correo\" type=\"email\"></label><br>"
          + "<button>Enviar</button></form>";
     res.setHeader("Content-Type", "text/html");
     res.write(datos);
     res.end();
    }
   break;
 default: console.log("Método no soportado" + req.method);
}});

server.listen(3000);
console.log('Server listenning at  port 3000');