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function doSomeAsyncHTTPRequest() {

  return new Promise((resolve, reject) => {

    setTimeout(() => {

      resolve();

    }, 2000);

  });

}

​

console.log('first log')

​

// lets send some http-request. This now returns a Promise!

doSomeAsyncHTTPRequest()

  .then((result) => {

    // The function that made the request has now resolved the Promise it returned

    console.log('third log');

  });

​

// the code immediately continues executing. It doesn't wait for the request to finish.

console.log('second log');