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## NavMenu 导航菜单 为网站提供导航功能的菜单。 ### 顶栏 适用广泛的基础用法。 :::demo 导航菜单默认为垂直模式,通过`mode`属性可以使导航菜单变更为水平模式。另外,在菜单中通过`submenu`组件可以生成二级菜单。Menu 还提供了`background-color`、`text-color`和`active-text-color`,分别用于设置菜单的背景色、菜单的文字颜色和当前激活菜单的文字颜色。 ```html <el-menu :default-active="activeIndex" class="el-menu-demo" mode="horizontal" @select="handleSelect"> <el-menu-item index="1">处理中心</el-menu-item> <el-submenu index="2"> <template slot="title">我的工作台</template> <el-menu-item index="2-1">选项1</el-menu-item> <el-menu-item index="2-2">选项2</el-menu-item> <el-menu-item index="2-3">选项3</el-menu-item> <el-submenu index="2-4"> <template slot="title">选项4</template> <el-menu-item index="2-4-1">选项1</el-menu-item> <el-menu-item index="2-4-2">选项2</el-menu-item> <el-menu-item index="2-4-3">选项3</el-menu-item> </el-submenu> </el-submenu> <el-menu-item index="3" disabled>消息中心</el-menu-item> <el-menu-item index="4"><a href="https://www.ele.me" target="_blank">订单管理</a></el-menu-item> </el-menu> <div class="line"></div> <el-menu :default-active="activeIndex2" class="el-menu-demo" mode="horizontal" @select="handleSelect" background-color="#545c64" text-color="#fff" active-text-color="#ffd04b"> <el-menu-item index="1">处理中心</el-menu-item> <el-submenu index="2"> <template slot="title">我的工作台</template> <el-menu-item index="2-1">选项1</el-menu-item> <el-menu-item index="2-2">选项2</el-menu-item> <el-menu-item index="2-3">选项3</el-menu-item> <el-submenu index="2-4"> <template slot="title">选项4</template> <el-menu-item index="2-4-1">选项1</el-menu-item> <el-menu-item index="2-4-2">选项2</el-menu-item> <el-menu-item index="2-4-3">选项3</el-menu-item> </el-submenu> </el-submenu> <el-menu-item index="3" disabled>消息中心</el-menu-item> <el-menu-item index="4"><a href="https://www.ele.me" target="_blank">订单管理</a></el-menu-item> </el-menu> <script> export default { data() { return { activeIndex: '1', activeIndex2: '1' }; }, methods: { handleSelect(key, keyPath) { console.log(key, keyPath); } } } </script> ``` ::: ### 侧栏 垂直菜单,可内嵌子菜单。 :::demo 通过`el-menu-item-group`组件可以实现菜单进行分组,分组名可以通过`title`属性直接设定,也可以通过具名 slot 来设定。 ```html <el-row class="tac"> <el-col :span="12"> <h5>默认颜色</h5> <el-menu default-active="2" class="el-menu-vertical-demo" @open="handleOpen" @close="handleClose"> <el-submenu index="1"> <template slot="title"> <i class="el-icon-location"></i> <span>导航一</span> </template> <el-menu-item-group> <template slot="title">分组一</template> <el-menu-item index="1-1">选项1</el-menu-item> <el-menu-item index="1-2">选项2</el-menu-item> </el-menu-item-group> <el-menu-item-group title="分组2"> <el-menu-item index="1-3">选项3</el-menu-item> </el-menu-item-group> <el-submenu index="1-4"> <template slot="title">选项4</template> <el-menu-item index="1-4-1">选项1</el-menu-item> </el-submenu> </el-submenu> <el-menu-item index="2"> <i class="el-icon-menu"></i> <span slot="title">导航二</span> </el-menu-item> <el-menu-item index="3" disabled> <i class="el-icon-document"></i> <span slot="title">导航三</span> </el-menu-item> <el-menu-item index="4"> <i class="el-icon-setting"></i> <span slot="title">导航四</span> </el-menu-item> </el-menu> </el-col> <el-col :span="12"> <h5>自定义颜色</h5> <el-menu default-active="2" class="el-menu-vertical-demo" @open="handleOpen" @close="handleClose" background-color="#545c64" text-color="#fff" active-text-color="#ffd04b"> <el-submenu index="1"> <template slot="title"> <i class="el-icon-location"></i> <span>导航一</span> </template> <el-menu-item-group> <template slot="title">分组一</template> <el-menu-item index="1-1">选项1</el-menu-item> <el-menu-item index="1-2">选项2</el-menu-item> </el-menu-item-group> <el-menu-item-group title="分组2"> <el-menu-item index="1-3">选项3</el-menu-item> </el-menu-item-group> <el-submenu index="1-4"> <template slot="title">选项4</template> <el-menu-item index="1-4-1">选项1</el-menu-item> </el-submenu> </el-submenu> <el-menu-item index="2"> <i class="el-icon-menu"></i> <span slot="title">导航二</span> </el-menu-item> <el-menu-item index="3" disabled> <i class="el-icon-document"></i> <span slot="title">导航三</span> </el-menu-item> <el-menu-item index="4"> <i class="el-icon-setting"></i> <span slot="title">导航四</span> </el-menu-item> </el-menu> </el-col> </el-row> <script> export default { methods: { handleOpen(key, keyPath) { console.log(key, keyPath); }, handleClose(key, keyPath) { console.log(key, keyPath); } } } </script> ``` ::: ### 折叠 :::demo ```html <el-radio-group v-model="isCollapse" style="margin-bottom: 20px;"> <el-radio-button :label="false">展开</el-radio-button> <el-radio-button :label="true">收起</el-radio-button> </el-radio-group> <el-menu default-active="1-4-1" class="el-menu-vertical-demo" @open="handleOpen" @close="handleClose" :collapse="isCollapse"> <el-submenu index="1"> <template slot="title"> <i class="el-icon-location"></i> <span slot="title">导航一</span> </template> <el-menu-item-group> <span slot="title">分组一</span> <el-menu-item index="1-1">选项1</el-menu-item> <el-menu-item index="1-2">选项2</el-menu-item> </el-menu-item-group> <el-menu-item-group title="分组2"> <el-menu-item index="1-3">选项3</el-menu-item> </el-menu-item-group> <el-submenu index="1-4"> <span slot="title">选项4</span> <el-menu-item index="1-4-1">选项1</el-menu-item> </el-submenu> </el-submenu> <el-menu-item index="2"> <i class="el-icon-menu"></i> <span slot="title">导航二</span> </el-menu-item> <el-menu-item index="3" disabled> <i class="el-icon-document"></i> <span slot="title">导航三</span> </el-menu-item> <el-menu-item index="4"> <i class="el-icon-setting"></i> <span slot="title">导航四</span> </el-menu-item> </el-menu> <style> .el-menu-vertical-demo:not(.el-menu--collapse) { width: 200px; min-height: 400px; } </style> <script> export default { data() { return { isCollapse: true }; }, methods: { handleOpen(key, keyPath) { console.log(key, keyPath); }, handleClose(key, keyPath) { console.log(key, keyPath); } } } </script> ``` ::: ### Menu Attribute | 参数 | 说明 | 类型 | 可选值 | 默认值 | |---------- |-------- |---------- |------------- |-------- | | mode | 模式 | string | horizontal / vertical | vertical | | collapse | 是否水平折叠收起菜单(仅在 mode 为 vertical 时可用)| boolean | — | false | | background-color | 菜单的背景色(仅支持 hex 格式) | string | — | #ffffff | | text-color | 菜单的文字颜色(仅支持 hex 格式) | string | — | #303133 | | active-text-color | 当前激活菜单的文字颜色(仅支持 hex 格式) | string | — | #409EFF | | default-active | 当前激活菜单的 index | string | — | — | | default-openeds | 当前打开的 sub-menu 的 index 的数组 | Array   | — | — | | unique-opened | 是否只保持一个子菜单的展开 | boolean | — | false | | menu-trigger | 子菜单打开的触发方式(只在 mode 为 horizontal 时有效) | string | hover / click | hover | | router | 是否使用 vue-router 的模式,启用该模式会在激活导航时以 index 作为 path 进行路由跳转 | boolean | — | false | | collapse-transition | 是否开启折叠动画 | boolean | — | true | | 参数 | 说明 | 类型 | 可选值 | 默认值 | |---------- |-------- |---------- |------------- |-------- | | index | 唯一标志 | string/null | — | null | | popper-class | 弹出菜单的自定义类名 | string | — | — | | show-timeout | 展开 sub-menu 的延时 | number | — | 300 | | hide-timeout | 收起 sub-menu 的延时 | number | — | 300 | | disabled | 是否禁用 | boolean | — | false | | popper-append-to-body | 是否将弹出菜单插入至 body 元素。在菜单的定位出现问题时,可尝试修改该属性 | boolean | — | 一级子菜单:true / 非一级子菜单:false | ### Menu-Item Attribute | 参数 | 说明 | 类型 | 可选值 | 默认值 | |---------- |-------- |---------- |------------- |-------- | | index | 唯一标志 | string | — | — | | route | Vue Router 路径对象 | Object | — | — | | disabled | 是否禁用 | boolean | — | false | ### Menu-Group Attribute | 参数 | 说明 | 类型 | 可选值 | 默认值 | |---------- |-------- |---------- |------------- |-------- | | title | 分组标题 | string | — | — |

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