tab切换类交互：

1. 记录激活项（整个对象/id/index)
2. 动态类型控制

下面以一个地址 tab 切换业务功能为例：

<div class="text item" :class="{active : activeAddress.id === item.id}" @click="switchAddress(item)"
     v-for="item in checkInfo.userAddresses" :key="item.id">
  <ul>
    <li><span>收<i/>货<i/>人：</span>{{ item.receiver }}</li>
    <li><span>联系方式：</span>{{ item.contact }}</li>
    <li><span>收货地址：</span>{{ item.fullLocation + item.address }}</li>
  </ul>
</div>

const activeAddress = ref({})
const switchAddress = (item) => {
  activeAddress.value = item
}