@/Layout/Sidebar/index.vue

<script setup lang="ts">
import Sidebar from './Sidebar.vue' // 在下面的代码里
import { useRoute } from 'vue-router'
import useUserStore from '@/store/modules/user.ts' // state中存放菜单数据
import useLayoutSetting from '@/store/modules/setting.ts' // state存放多页面公用大的数据（fold： 侧边菜单栏是否折叠）
const settingLayout = useLayoutSetting()
const userStore = useUserStore()
const route = useRoute()
</script><template><div class="sidebar_container"><el-scrollbar><el-menurouterunique-opened:default-active="route.path":collapse="settingLayout.fold"active-text-color="#fff"background-color="#001529"class="el-menu-vertical-demo"text-color="#959ea7"><Sidebarv-for="(item, i) in userStore.menuList":key="i":menu="item"/></el-menu></el-scrollbar></div>
</template><style lang="scss" scoped>
.sidebar_container {transition: all 0.5s;.el-scrollbar {height: calc(100vh - 60px);overflow-y: auto;.el-menu {border-right: none;}}
}
.fold {width: $sidebar-min-width;
}
</style>

@/Layout/Sidebar/Sidebar.vue

<script setup lang="ts">
defineProps(['menu'])
</script>
<script lang="ts">
export default {name: 'MenuItem',
}
</script>
<template><!-- 没有子路由 --><el-menu-item :index="menu.path" v-if="!menu.children && !menu.meta.hidden"><el-icon v-if="menu.meta"><component :is="menu.meta.icon"></component></el-icon><template #title><span>{{ menu.meta.title }}</span></template></el-menu-item><!-- 有子路由但只有一个 --home --><el-menu-item:index="menu.children[0].path"v-if="menu.children &&menu.children.length === 1 &&menu.path === '/' &&!menu.meta.hidden"><el-icon><component :is="menu.children[0].meta.icon"></component></el-icon><template #title><span>{{ menu.children[0].meta.title }}</span></template></el-menu-item><!-- 有子路由但只有一个 --not home --><el-sub-menu:index="menu.path"v-if="menu.children &&menu.children.length === 1 &&menu.path !== '/' &&!menu.meta.hidden"><el-icon v-if="menu.meta"><component :is="menu.meta.icon"></component></el-icon><template #title><span>{{ menu.meta.title }}</span></template><el-menu-item :index="menu.children[0].path"><template #title><el-icon v-if="menu.children[0].meta"><component :is="menu.children[0].meta.icon"></component></el-icon><span>{{ menu.children[0].meta.title }}</span></template></el-menu-item></el-sub-menu><!-- 有子路由且大于一个 --><el-sub-menu:index="menu.path"v-if="menu.children && menu.children.length > 1 && !menu.meta.hidden"><template #title><el-icon><component :is="menu.meta.icon"></component></el-icon><span>{{ menu.meta.title }}</span></template><MenuItem v-for="(item, i) in menu.children" :key="i" :menu="item" /></el-sub-menu>
</template><style lang="scss" scoped></style>