yuebonui-vue3/src/components/TopNav/index.vue

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<template>
  <el-menu
    :default-active="activeMenu"
    mode="horizontal"
    @select="handleSelect"
  >
    <template v-for="(item, index) in topMenus">
      <el-menu-item :style="{'--theme': theme}" :index="item.path" :key="index" v-if="index < visibleNumber"
        ><svg-icon :icon-class="item.meta.icon" />
        {{ item.meta.title }}</el-menu-item
      >
    </template>

    <!-- 顶部菜单超出数量折叠 -->
    <el-sub-menu :style="{'--theme': theme}" index="more" v-if="topMenus.length > visibleNumber">
      <template #title>更多菜单</template>
      <template v-for="(item, index) in topMenus">
        <el-menu-item
          :index="item.path"
          :key="index"
          v-if="index >= visibleNumber"
          ><svg-icon :icon-class="item.meta.icon" />
          {{ item.meta.title }}</el-menu-item
        >
      </template>
    </el-sub-menu>
  </el-menu>
</template>

<script setup>
import { constantRoutes } from "@/router"
import { isHttp } from '@/utils/validate'

// 顶部栏初始数
const visibleNumber = ref(null);
// 是否为首次加载
const isFrist = ref(null);
// 当前激活菜单的 index
const currentIndex = ref(null);

const store = useStore();
const route = useRoute();

// 主题颜色
const theme = computed(() => store.state.settings.theme);
// 所有的路由信息
const routers = computed(() => store.state.permission.topbarRouters);

// 顶部显示菜单
const topMenus = computed(() => {
  let topMenus = [];
  routers.value.map((menu) => {
    if (menu.hidden !== true) {
      // 兼容顶部栏一级菜单内部跳转
      if (menu.path === "/") {
          topMenus.push(menu.children[0]);
      } else {
          topMenus.push(menu);
      }
    }