text: // Example starter JavaScript for disabling form submissions if there are invalid fields
  (function() {
      "use strict";
      window.addEventListener("load", function() {
          var form = document.getElementById("iniciarForm");
          form.addEventListener("submit", function(event) {
              if (form.checkValidity() == false) {
                  event.preventDefault();
                  event.stopPropagation();
              }
              form.classList.add("was-validated");
          }, false);
      }, false);
  }());
  