test.js

  document.querySelector('.btn-create').addEventListener('click', function (e) {
      getModalContent(e, this);
    });
  
  // test
  
  var edit_modal_btn_list = document.querySelectorAll('.btn-edit');

  edit_modal_btn_list.forEach(function (edit_btn, index) {
    edit_btn.addEventListener('click', function (e) {
      getModalContent(e, this);
    });
  });