sw_reg.js

window.addEventListener('load', () => {
  registerSW();
});
window.addEventListener('beforeinstallprompt', (e) => {
    // prevent chrome 67 and earlier from automatically showing the prompt.
    e.preventDefault();
    deferredPrompt=e;
    //update ui notify the user they can
    // add to home screen
//    btnAdd.style.display='block'
});

//btnAdd.addEventListener('click', (e) => {
//  // hide our user interface that shows our A2HS button
//  btnAdd.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 alnahr client prompt');
//      } else {
//        console.log('User dismissed the alnahr client prompt');
//      }
//      deferredPrompt = null;
//    });
//});
window.addEventListener('appinstalled', (evt)=>{
   app.logEvent('alnahr clinet','installed'); 
});
async function registerSW() {
if ("serviceWorker" in navigator) {
    navigator.serviceWorker.register("/client/sw.js")    .then(function(registration) {
        console.log("Service Worker registered with scope:", registration.scope);   
    }).catch(function(err) {     
        console.log("Service worker registration failed:", err);   
    });
}
}