vue菜单栏联动内容页面tab的实现示例

   <el-tabs
      v-model="activeName"
      editable
      @edit="handleTabsEdit"
      @tab-click="selectTab"
    >
      <el-tab-pane
        v-for="(route, index) in activeTabs"
        :key="index"
        :label="getTabTitle(route.path)"
        :name="route.meta.title"
      >
      </el-tab-pane>
    </el-tabs>

<template>
  <section class="app-main">
    <el-tabs
      v-model="activeName"
      editable
      @edit="handleTabsEdit"
      @tab-click="selectTab"
    >
      <el-tab-pane
        v-for="(route, index) in activeTabs"
        :key="index"
        :label="getTabTitle(route.path)"
        :name="route.meta.title"
      >
      </el-tab-pane>
    </el-tabs>
    <transition name="fade-transform" mode="out-in">  //展示具体页面内容
      <content   //自定义组件
      >
        <div class="router-inner-container">
          <router-view v-show="activeName" :key="key" /> //v-show="activeName"非常重要，注意不要用v-if，用来与当前tab对应，即关闭tab也关闭当前内容。
        </div>
      </content>
    </transition>
  </section>
</template>

<script>
import { mapGetters } from 'vuex'; //引入vuex，来拿到我的所有菜单路由

export default {
  name: 'AppMain',
  props: {
    noTag: {
      type: Boolean,
      default: false
    },
    noMap: {
      type: Boolean,
      default: false
    }
  },
  data() {
    return {
      activeName: null, // 默认选中第一个 tab
      activeTabs: [] // 存储当前显示的 tab
    };
  },
  computed: {
    ...mapGetters(['sidebar', 'sidebarRouters']), //菜单所有路由sidebarRouters
    key() {
      return this.$route.path;
    },
    isStatisticsView() {
      if (this.$route.path == '/home/index') {
        return true;
      } else {
        return false;
      }
    }
  },

  methods: {
    selectTab(tab, event) {

      if (Array.isArray(tab) && tab.length > 0) {  //由于数据结构问题做的判段，拿到activeName 
        this.activeName = tab[0].meta.title;
      } else if (typeof tab === 'object' && tab.meta) {
        this.activeName = tab.meta.title;
      } else if (Array.isArray(tab) && !tab.length > 0) {
        this.activeName = ''; //当所有tab都关闭时，关闭所有内容，否则页面会tab都关闭了，但还有最后一个关闭的tab的页面内容。
      }
    },
    handleTabsEdit(targetName, action) {
      // 处理标签页编辑事件
      if (action === 'remove') {
        // 删除标签页
        this.removeTab(targetName);
      }
    },
    removeTab(targetName) {
      const tabs = this.activeTabs;
      const index = tabs.findIndex((tab) => tab.meta.title === targetName);
      if (index !== -1) {
        tabs.splice(index, 1);
        this.selectTab(tabs, event); //很重要，更新activeName，否则删除后不会切换下一个对应tab也不会切换页面内容
      }
    },
    updateActiveTabs() {
      const currentPath = this.$route;
      // 判断对象是否在 activeTabs 中存在
      const existsInTabs = this.activeTabs.some(
        (tab) => tab.hasOwnProperty('path') && tab.path === currentPath.path
      );
      if (!existsInTabs) {
        // 如果当前路由不在 activeTabs 中，将其添加进去
        this.activeTabs.push(currentPath);
      }
      this.selectTab(currentPath, event); //很重要，更新activeName，否则切换菜单栏时对应的tab不会高亮不会切换
    },
    findMatchingRoute(routes, targetPath) {   //为了处理数组的
      for (const route of routes) {
        if (route.path === targetPath) {
          return route;
        }
        if (route.children && route.children.length > 0) {
          const matchingChild = this.findMatchingRoute(
            route.children,
            targetPath
          );
          if (matchingChild) {
            return matchingChild;
          }
        }
      }
      return null;
    },
    getTabTitle(route) {
      // 根据路由信息获取对应的标题
      const matchingRoute = this.findMatchingRoute(this.sidebarRouters, route);
      return matchingRoute ? matchingRoute.meta.title : '';
    },
    findMatchingMenu(routes, targetTitle) {
      // 递归查找匹配的菜单项
      for (const route of routes) {
        if (route.meta) {
          if (route.meta.title === targetTitle) {
            return route;
          }

          if (route.children && route.children.length > 0) {
            const matchingChild = this.findMatchingMenu(
              route.children,
              targetTitle
            );
            if (matchingChild) {
              return matchingChild;
            }
          }
        }
      }

      return null;
    }
  },
  mounted() {},
  watch: {
    $route(to, from) {
      if (to && to.meta && !to.meta.noMap) {
        this.$nextTick(() => {
          this.$refs.jmap.resizeMap();
        });
      }
      // 更新 activeTabs
      this.updateActiveTabs();
    },
    activeName: {
      immediate: true,
      deep: true,
      handler(val, oldVal) {
        if (val && val !== oldVal) {
          const matchingMenu = this.findMatchingMenu(this.sidebarRouters, val);
          if (matchingMenu) {
            this.$router.push({ path: matchingMenu.path });  //切换tab时，切换路由来对应想要页面内容
          }
        }
      }
    }
  }
};
</script>

<style lang="scss">
.app-main {
  /*50 = navbar  */
  height: calc(100vh - 50px);
  width: 100%;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: #f3f3f3;
  &.no-header {
    height: 100vh;
  }
}
.fixed-header + .app-main {
  padding-top: 60px;
}

.single-layout {
  .app-main {
    padding: 0px;
  }
}

.map-style + .router-inner-container {
  position: absolute;
}
</style>

<style lang="scss">
// fix css style bug in open el-dialog
.el-popup-parent--hidden {
  .fixed-header {
    padding-right: 15px;
  }
}
.no-header {
  .float-panel {
    height: 100vh;
  }
}
</style>