text: const RANDOM_USER_ME_API = 'https://randomuser.me/api/?results=100';
  
  (() => {
      const app = {
          initialize() {            
              this.cacheElements();
              this.getDataFromRandomUserMeAPIEndpoint();
          },
          cacheElements() {
              this.$usersList = document.querySelector('.users-list');
          },
          getDataFromRandomUserMeAPIEndpoint() {
              getJSON(RANDOM_USER_ME_API, 
                  (data) => {
                      let tempStr = '';
                      data.results.forEach((user) => {
                          tempStr += `
                          <div class="col-xs-12 col-sm-12 col-md-6 col-lg-4 col-xl-3">
                              <article class="card">
                                  <img src="${user.picture.large}" class="card-img-top" alt="...">
                                  <div class="card-body">
                                      <h5 class="card-title">${user.name.first} ${user.name.last}</h5>
                                  </div>
                                  <ul class="list-group list-group-flush">
                                      <li class="list-group-item">${user.email}</li>
                                      <li class="list-group-item">${user.cell}</li>
                                      <li class="list-group-item">${user.location.country}</li>
                                  </ul>
                                  <div class="card-body">
                                      <a href="#" class="card-link">Card link</a>
                                      <a href="#" class="card-link">Another link</a>
                                  </div>
                              </article>
                          </div>
                          `;
                      });
                      this.$usersList.innerHTML = tempStr;
                  },
                  (error) => {
                      console.log(error);
                  });
          }
      };
      app.initialize();
  })();