var editListTitle = function(editButton) {
  console.log("Edit Task...");

  let listTitle = editButton.parentNode;

  let editInput = listTitle.querySelector("input[type=text]");
  let label = listTitle.querySelector("label");

  let containsClass = listTitle.classList.contains("editMode");

  if (containsClass) {
    label.innerText = editInput.value;
  } else {
    editInput.value = label.innerText;
  }

  listTitle.classList.toggle("editMode");
};