text: (function() {
      'use strict';
    
      window.onload = function() {
        let message = localStorage.getItem("message") || 'Your message will display here';
        $('#message').html(message);
        $('#display').html(message);
      }
    
      $('#button').click(() => {
        console.log('click')
        let message = $('#message').val();
        console.log(message);
        $('#display').html(message);
        localStorage.setItem("message", message);
      });
    
      if ('serviceWorker' in navigator) {
        navigator.serviceWorker
                 .register('/service-worker.js')
                 .then(function() { console.log('Service Worker Registered'); });
      }
    })();