算是一个简单的返回页面 

<template>
  <div class="wechat-order-detail-container">
    <navBar v-if="pageTitle" :page-title="pageTitle"></navBar>
  </div>
</template>
<script setup>
import { ref } from "vue";
import Taro, { useDidShow } from "@tarojs/taro";

import navBar from "../../../components/navBar/index.vue";
const pageTitle = ref("");
useDidShow(() => {
  const currentPage = Taro.getCurrentPages().slice(-1)[0];
  const pageTitle1 = currentPage.config.navigationBarTitleText || "默认标题";
  pageTitle.value = pageTitle1;
});
</script>
<style lang="scss">
.wechat-order-detail-container {
}
</style>

主要是这里

  const currentPage = Taro.getCurrentPages().slice(-1)[0];
  const pageTitle1 = currentPage.config.navigationBarTitleText || "默认标题";

Taro +vue3 的页面结构还有一个