tab选项卡 js

<div class="tabs">
  <button class="tab-button active" data-tab="tab1">Tab 1</button>
  <button class="tab-button" data-tab="tab2">Tab 2</button>
  <button class="tab-button" data-tab="tab3">Tab 3</button>

  <div class="tab-content active" id="tab1">
    <h2>Content for Tab 1</h2>
    <p>This is the content for tab 1.</p>
  </div>
  <div class="tab-content" id="tab2">
    <h2>Content for Tab 2</h2>
    <p>This is the content for tab 2.</p>
  </div>
  <div class="tab-content" id="tab3">
    <h2>Content for Tab 3</h2>
    <p>This is the content for tab 3.</p>
  </div>
</div>

.tabs {
  display: flex;
  flex-direction: column;
}

.tab-button {
  padding: 10px;
  cursor: pointer;
  background-color: #f1f1f1;
  border: none;
  outline: none;
  transition: background-color 0.3s;
}

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

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

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

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

  tabButtons.forEach(button => {
    button.addEventListener('click', function() {
      const targetTab = this.getAttribute('data-tab');

      // Remove active class from all buttons and contents
      tabButtons.forEach(btn => btn.classList.remove('active'));
      tabContents.forEach(content => content.classList.remove('active'));

      // Add active class to the clicked button and corresponding content
      this.classList.add('active');
      document.getElementById(targetTab).classList.add('active');
    });
  });
});