node.js making https post request with x-www-form-urlencoded data

This code snippet is a demo of using node’s https and querystring to make a https post request with data encoded in x-www-form-urlencoded. The querystring module encodes the data in x-www-form-urlencoded and it is then passed in the req.write() to make the https post request. In the reqest headers, the Content-type has to be ‘application/x-www-form-urlencoded’ and the Content-Length has to be the length of the data that’s going to be transmitted in the request.

var https = require('https');
var querystring = require('querystring');

// form data
var postData = querystring.stringify({
  firstanme: "Amy",
  lastname: "Li"
});

// request option
var options = {
  host: 'example.com',
  port: 443,
  method: 'POST',
  path: '/user',
  headers: {
    'Content-Type': 'application/x-www-form-urlencoded',
    'Content-Length': postData.length
  }
};

// request object
var req = https.request(options, function (res) {
  var result = '';
  res.on('data', function (chunk) {
    result += chunk;
  });
  res.on('end', function () {
    console.log(result);
  });
  res.on('error', function (err) {
    console.log(err);
  })
});

// req error
req.on('error', function (err) {
  console.log(err);
});

//send request witht the postData form
req.write(postData);
req.end();