【Vue】vue循环三级导航

• Z时代
• 2024-01-10
• 分类：技术分享

vue怎么实现循环三级导航呢？用的是element框架。已经循环出了二级，但是原理理解不够透彻，不知道三级甚至四级导航如何循环出来。请高人指点

<template>
<div class="sidebar">
<el-menu :default-active="onRoutes" class="el-menu-vertical-demo" theme="dark" unique-opened router>
<template v-for="item in items">
<template v-if="item.subs">
<el-submenu :index="item.index">
<template slot="title">{{ item.title }}</template>
<el-menu-item v-for="(subItem,i) in item.subs" :key="i" :index="subItem.index">
{{ subItem.title }}
</el-menu-item>
</el-submenu>
</template>
<template v-else>
<el-menu-item :index="item.index">
{{ item.title }}
</el-menu-item>
</template>
</template>
</el-menu>
</div>
</template>
<script>
export default {
data() {
return {
items: [
{
index: 'readme',
title: '首页'
},
{
index: '2',
title: '表格',
subs: [
{
index: 'basetable',
title: '基础表格',
chl:[
{
index: 'basetable',
title: '测试1'
},
{
index: 'basetable',
title: '测试2',
chl:[
{
index: 'basetable',
title: '测试3'
},
{
index: 'basetable',
title: '测试4'
}
]
}
]
},
{
index: 'vuetable',
title: 'Vue表格组件'
}
]
},
{
index: '3',
title: '表单',
subs: [
{
index: 'baseform',
title: '基本表单'
},
{
index: 'vueeditor',
title: '编辑器'
},
{
index: 'markdown',
title: 'markdown'
},
{
index: 'upload',
title: '文件上传'
}
]
},
{
index: 'basecharts',
title: '图表'
},
{
index: 'drag',
title: '拖拽'
}
]
}
},
computed:{
onRoutes(){
return this.$route.path.replace('/','');
}
}
}
</script>

回答

继续往里套啊，标题用template slot ,下面紧跟 el-menu-item

看这个侧栏第二个不带icon的示例
http://element.eleme.io/#/zh-...

   <el-menu class="sidebar-el-menu" :default-active="onRoutes" :collapse="collapse" background-color="#324157"
        text-color="#bfcbd9" active-text-color="#20a0ff" unique-opened router>
        <template v-for="item in items">
            <!--循环-->
            <template v-if="item.subs">
                <el-submenu :index="item.index" :key="item.index">
                    <template slot="title">
                        <i :class="item.icon"></i><span slot="title">{{ item.title }}</span>
                    </template>
                    <el-menu-item v-for="(subItem,i) in item.subs" :key="i" :index="subItem.index">
                        {{ subItem.title }}
                    </el-menu-item>
                    <!--3级菜单-->
                    <template v-for="subs in item.subs">
                        <template v-if="subs.subs">
                            <el-submenu :index="subs.index" :key="subs.index">
                                <template slot="title">
                                    <i :class="subs.icon"></i><span slot="title">{{ subs.title }}</span>
                                </template>
                                <el-menu-item v-for="(subItem,i) in subs.subs" :key="i" :index="subItem.index">
                                    {{ subItem.title }}
                                </el-menu-item>
                            </el-submenu>
                        </template>
                    </template>
                </el-submenu>
            </template>
            <template v-else>
                <el-menu-item :index="item.index" :key="item.index">
                    <i :class="item.icon"></i><span slot="title">{{ item.title }}</span>
                </el-menu-item>
            </template>
        </template>
    </el-menu>

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