如何显示多个选项卡式内容部分？

<ul class="tabs">
  <li class="active">选项卡1</li>
  <li>选项卡2</li>
  <li>选项卡3</li>
</ul>

<div class="tab-content">
  <div class="tab-pane active">选项卡1的内容</div>
  <div class="tab-pane">选项卡2的内容</div>
  <div class="tab-pane">选项卡3的内容</div>
</div>

.tabs {
  list-style-type: none;
  margin: 0;
  padding: 0;
}

.tabs li {
  display: inline-block;
  padding: 10px;
  background-color: #f2f2f2;
  cursor: pointer;
}

.tabs li.active {
  background-color: #ccc;
}

.tab-content {
  display: none;
  padding: 10px;
}

.tab-content .active {
  display: block;
}

const tabs = document.querySelectorAll('.tabs li');
const tabContents = document.querySelectorAll('.tab-content .tab-pane');

tabs.forEach((tab, index) => {
  tab.addEventListener('click', () => {
    // 移除所有选项卡的活动状态和内容的显示
    tabs.forEach((tab) => tab.classList.remove('active'));
    tabContents.forEach((content) => content.classList.remove('active'));

    // 添加当前选项卡的活动状态和对应内容的显示
    tab.classList.add('active');
    tabContents[index].classList.add('active');
  });
});