https://thesymo.com/js/install-app.js?v=

1//<--------- Start Payment -------//>
2(function($) {
3	"use strict";
4
5	const divInstall = document.getElementById('installContainer');
6	const butInstall = document.getElementById('butInstall');
7
8  if (divInstall && butInstall) {
9    window.addEventListener('beforeinstallprompt', (event) => {
10      // Prevent the mini-infobar from appearing on mobile.
11      event.preventDefault();
12      console.log('Ok', 'beforeinstallprompt', event);
13      // Stash the event so it can be triggered later.
14      window.deferredPrompt = event;
15      // Remove the 'display-none' class from the install button container.
16      divInstall.classList.toggle('display-none', false);
17    });
18    
19    butInstall.addEventListener('click', async () => {
20      console.log('Ok', 'butInstall-clicked');
21      const promptEvent = window.deferredPrompt;
22      if (!promptEvent) {
23        // The deferred prompt isn't available.
24        return;
25      }
26      // Show the install prompt.
27      promptEvent.prompt();
28      // Log the result
29      const result = await promptEvent.userChoice;
30      console.log('Ok', 'userChoice', result);
31      // Reset the deferred prompt variable, since
32      // prompt() can only be called once.
33      window.deferredPrompt = null;
34      // Hide the install button.
35      divInstall.classList.toggle('display-none', true);
36    });
37    
38    window.addEventListener('appinstalled', (event) => {
39      console.log('Ok', 'appinstalled', event);
40      // Clear the deferredPrompt so it can be garbage collected
41      window.deferredPrompt = null;
42    });
43  }
44  
45})(jQuery);