用es6写选项卡点击切换

HTML:

<div class="tab">
  <div class="tab-header">
    <div class="tab-item active">Tab 1</div>
    <div class="tab-item">Tab 2</div>
    <div class="tab-item">Tab 3</div>
  </div>
  <div class="tab-content">
    <div class="tab-pane active">Content for Tab 1</div>
    <div class="tab-pane">Content for Tab 2</div>
    <div class="tab-pane">Content for Tab 3</div>
  </div>
</div>

CSS:

.tab {
  display: flex;
  flex-direction: column;
  border: 1px solid #ccc;
}

.tab-header {
  display: flex;
}

.tab-item {
  padding: 10px;
  border-right: 1px solid #ccc;
  cursor: pointer;
  &:last-child {
    border-right: none;
  }
  &.active {
    background-color: #ccc;
  }
}

.tab-content {
  padding: 10px;
}

.tab-pane {
  display: none;
  &.active {
    display: block;
  }
}

ES6:

const tabItems = document.querySelectorAll('.tab-item');
const tabPanes = document.querySelectorAll('.tab-pane');

tabItems.forEach(item => {
  item.addEventListener('click', () => {
    const currentTab = document.querySelector(`.${item.dataset.tab}`);
    tabItems.forEach(item => {
      item.classList.remove('active');
    });
    tabPanes.forEach(pane => {
      pane.classList.remove('active');
    });
    item.classList.add('active');
    currentTab.classList.add('active');
  });
});

注意：HTML中的每个tab-item都必须具有一个data-tab属性，其值应为相应tab-pane的类名。例如，第一个tab-item应该具有data-tab="tab-pane1"，而第一个tab-pane应该具有类名"tab-pane tab-pane1"。