js中tab切换效果代码

<div class="tab-container">
  <ul class="tab-buttons">
    <li class="active">Tab 1</li>
    <li>Tab 2</li>
    <li>Tab 3</li>
  </ul>
  <div class="tab-content">
    <div class="active">Content for Tab 1</div>
    <div>Content for Tab 2</div>
    <div>Content for Tab 3</div>
  </div>
</div>

.tab-container {
  width: 100%;
}

.tab-buttons {
  display: flex;
  list-style-type: none;
  padding: 0;
  margin: 0;
}

.tab-buttons li {
  flex: 1;
  padding: 10px;
  cursor: pointer;
  background-color: #f1f1f1;
  border: 1px solid #ccc;
  text-align: center;
}

.tab-buttons li.active {
  background-color: #ddd;
}

.tab-content div {
  display: none;
  padding: 20px;
  border: 1px solid #ccc;
}

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

document.addEventListener('DOMContentLoaded', function() {
  const tabButtons = document.querySelectorAll('.tab-buttons li');
  const tabContents = document.querySelectorAll('.tab-content div');

  tabButtons.forEach((button, index) => {
    button.addEventListener('click', () => {
      // 移除所有按钮和内容的active类
      tabButtons.forEach(btn => btn.classList.remove('active'));
      tabContents.forEach(content => content.classList.remove('active'));

      // 添加当前点击按钮和对应内容的active类
      button.classList.add('active');
      tabContents[index].classList.add('active');
    });
  });
});