页面路由跳转返回后数据回显，记住原先的状态

src/views/home/components/noRouterHeader.vue

@@ -20,7 +20,7 @@
            <el-dropdown-item divided  @click.native='handleToggle'>切换账号</el-dropdown-item>
         </el-dropdown-menu>
       </el-dropdown>
-      <el-button type="text" class="return-btn" :title="'返回'" @click="handleReturn">
+      <el-button type="text" class="return-btn" :title="'返回'" v-if="showReturnBtn" @click="handleReturn">
         <svg-icon style="color: #0B58FF;" icon-class="returnIcon" />
       </el-button>
       <el-button type="text" class="screen-btn" :title="isFullScreen ? '退出全屏' : '全屏'" @click="changeFullScreen">
@@ -46,6 +46,7 @@
 import { mapGetters } from 'vuex'
 import moment from 'moment'; // 引入moment
 import {getPath} from "@/utils/ruoyi";
+import { getNavStackLength, popNavigation } from '@/utils/navigationReturnState';
 export default {
   name: 'Header',
   props: {
@@ -67,12 +68,30 @@ export default {
       timeTimer: null,
       date: Date.now(), // 使用当前时间戳作为初始值
       activeTime: 1, // 默认月维度（0=日，1=月，2=年）
+      navStackLength: 0,
     }
   },
   computed:{
     ...mapGetters(['nickname']),
+    showReturnBtn() {
+      return this.navStackLength > 0;
+    }
   },
   watch: {
+    // 监听菜单参数变化，菜单进入时立即更新
+    '$route.query.menu': {
+      immediate: true,
+      handler(menuFlag) {
+        if (menuFlag === '1') {
+          this.$nextTick(() => {
+            this.updateNavStackLength();
+          });
+        }
+      }
+    },
+    $route() {
+      this.updateNavStackLength();
+    },
     activeTime(newVal, oldVal) {
       if (newVal !== oldVal) {
         this.date = Date.now();
@@ -95,10 +114,18 @@ export default {
     }
   },
   mounted() {
-    // 初始化默认日期为当前月份
-    console.log('初始化日期选择器，当前时间戳:', this.date);
+    // 初始化导航栈长度
+    this.updateNavStackLength();
+    // 监听导航清空事件
+    window.addEventListener('navigation-cleared', this.handleNavigationCleared);
     this.$nextTick(() => {
-      this.emitTimeRange();
+      const hasRange =
+        this.dateData &&
+        ((this.dateData.startTime != null && this.dateData.startTime !== 0) ||
+          (this.dateData.endTime != null && this.dateData.endTime !== 0));
+      if (!hasRange) {
+        this.emitTimeRange();
+      }
     });
   },
   beforeDestroy() {
@@ -106,15 +133,32 @@ export default {
     if (this.timeTimer) {
       clearInterval(this.timeTimer);
     }
+    // 移除导航清空事件监听
+    window.removeEventListener('navigation-cleared', this.handleNavigationCleared);
   },
   methods: {
+    // 处理导航清空事件
+    handleNavigationCleared() {
+      this.updateNavStackLength();
+    },
+    // 更新导航栈长度
+    updateNavStackLength() {
+      this.navStackLength = getNavStackLength();
+    },
     changeFullScreen() {
       this.$emit('screenfullChange');
     },
     handleReturn() {
-      console.log('返回上一页');
       if (this.$router) {
-        this.$router.go(-1);
+        // 出栈获取前一个页面信息
+        const prev = popNavigation();
+        if (prev && prev.path) {
+          // 有前一个页面，跳转到该页面（showReturnBtn 会自动从 sessionStorage 读取最新值）
+          this.$router.push(prev.path);
+        } else {
+          // 没有前一个页面，使用默认返回
+          this.$router.go(-1);
+        }
       }
     },
     async logout() {