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JavaScript Node.js Basics (2014) Introduction to Node.js The Tools at our Disposal

API was different I saw

var postData = querystring.stringify({
  'msg' : 'Hello World!'
});

var options = {
  hostname: 'www.google.com',
  port: 80,
  path: '/upload',
  method: 'POST',
  headers: {
    'Content-Type': 'application/x-www-form-urlencoded',
    'Content-Length': postData.length
  }
};

var req = http.request(options, (res) => {
  console.log(`STATUS: ${res.statusCode}`);
  console.log(`HEADERS: ${JSON.stringify(res.headers)}`);
  res.setEncoding('utf8');
  res.on('data', (chunk) => {
    console.log(`BODY: ${chunk}`);
  });
  res.on('end', () => {
    console.log('No more data in response.')
  })
});

req.on('error', (e) => {
  console.log(`problem with request: ${e.message}`);
});

// write data to request body
req.write(postData);
req.end();

https://nodejs.org/dist/latest-v4.x/docs/api/http.html#http_http_request_options_callback

I noticed the

var req = http.request(options, (res) => {

was different in several places, with the use of ${} around the JSON.stringify, what do they do, does anyone know specifically. I assume it works the same as the, um, more normalized api we see in the video.. perhaps api becomes more complex as a derivation of time.