如何使下拉菜单在颤动中可重用

<div class="dropdown">
  <button class="dropdown-btn">Dropdown</button>
  <div class="dropdown-content">
    <a href="#">Link 1</a>
    <a href="#">Link 2</a>
    <a href="#">Link 3</a>
  </div>
</div>

.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: #f9f9f9;
  min-width: 160px;
  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
  z-index: 1;
}

.dropdown-content a {
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
}

.dropdown-content a:hover {background-color: #f1f1f1}

.dropdown:hover .dropdown-content {
  display: block;
}

function addShakeEffect(element) {
  let times = 3;
  let distance = 5;
  let originalX = element.offsetLeft;
  let originalY = element.offsetTop;

  function shake() {
    if (times > 0) {
      element.style.left = `${originalX + distance}px`;
      element.style.top = `${originalY + distance}px`;
      times--;
      setTimeout(() => {
        element.style.left = `${originalX - distance}px`;
        element.style.top = `${originalY - distance}px`;
        times--;
        setTimeout(shake, 100);
      }, 100);
    } else {
      element.style.left = `${originalX}px`;
      element.style.top = `${originalY}px`;
    }
  }

  shake();
}

document.querySelectorAll('.dropdown-btn').forEach(btn => {
  btn.addEventListener('click', () => {
    const dropdownContent = btn.nextElementSibling;
    addShakeEffect(dropdownContent);
  });
});