index.js

var vmc = {
  
  makeApiRequest: function(apiKey) {
    var url = 'https://admin.masha24.by/api/?code=' + apiKey;
  
    fetch(url).then(function(response) {
      return response.json();
    }).then(function(json) {
      var titles = json.items.map(function(item) {
        return '"' + item.snippet.title + '"';
      }).join(', ');
      console.log(titles);
    });
  }
}


// Register service worker to control making site work offline

if ('serviceWorker' in navigator) {
  navigator.serviceWorker
    .register('sw.js')
    .then(() => { console.log('Service Worker Registered'); });
}

// Code to handle install prompt on desktop

let deferredPrompt;
const addBtn = document.querySelector('.add-button');
addBtn.style.display = 'none';

document.addEventListener('DOMContentLoaded', (event) => {
  const parsedUrl = new URL(window.location.href);
  if (parsedUrl.searchParams.get("code")) {
    vmc.makeApiRequest(parsedUrl.searchParams.get("code"))
  }
});

window.addEventListener('beforeinstallprompt', (e) => {
  // Prevent Chrome 67 and earlier from automatically showing the prompt
  e.preventDefault();
  // Stash the event so it can be triggered later.
  deferredPrompt = e;
  // Update UI to notify the user they can add to home screen
  addBtn.style.display = 'block';

  addBtn.addEventListener('click', () => {
    // hide our user interface that shows our A2HS button
    addBtn.style.display = 'none';
    // Show the prompt
    deferredPrompt.prompt();
    // Wait for the user to respond to the prompt
    deferredPrompt.userChoice.then((choiceResult) => {
      if (choiceResult.outcome === 'accepted') {
        console.log('User accepted the A2HS prompt');
      } else {
        console.log('User dismissed the A2HS prompt');
      }
      deferredPrompt = null;
    });
  });
});