uniapp Vue3 面包屑导航 带动态样式

<template>
  <view class="bei">
    <view class="container">
      <view class="indicator"></view>
      <!-- 遍历路由列表 -->
      <view v-for="(item, index) in routes" :key="index" :class="['foritem', {'selected': item.to === selectedRoute}]" @click="dianji(item)">
        <view class="item">
          {{ item.name }}
        </view>
      </view>
    </view>
  </view>
  <view class="tip" v-if="selectedPage == 'A'">
    您已转到 {{ selectedPage }} 页面
  </view>
  <view class="tip" v-if="selectedPage == 'B'">
    您已转到 {{ selectedPage }} 页面
  </view>
  <view class="tip" v-if="selectedPage == 'C'">
    您已转到 {{ selectedPage }} 页面
  </view>
</template>
<script setup>
  import { onMounted, ref } from "vue"
  // 定义路由列表
  const routes = ref([
    {
      to: "A",
      name: "A页面",
    },
    {
      to: "B",
      name: "B页面",
    },
    {
      to: "C",
      name: "C页面",
    },
  ])
  // 当前选中的路由
  const selectedRoute = ref("")
  // 当前选中的页面
  const selectedPage = ref("")
  // 点击路由项的处理函数
  function dianji(item) {
    console.log("点击", item.to)
    selectedRoute.value = item.to
    selectedPage.value = item.to
    const index = routes.value.findIndex(route => route.to === item.to)
  }
  // 组件挂载后的初始化
  onMounted(() => {
    selectedRoute.value = "A" // 将"A页面"设置为被点击状态
    selectedPage.value = "A" // 设置初始提示信息
  })
</script>