El-Plus的面包屑导航组件
<template> <el-breadcrumb separator="/"> <el-breadcrumb-item :to="{ path: '/' }">homepage</el-breadcrumb-item> <el-breadcrumb-item> <a href="/">promotion management</a> </el-breadcrumb-item> <el-breadcrumb-item>promotion list</el-breadcrumb-item> <el-breadcrumb-item>promotion detail</el-breadcrumb-item> </el-breadcrumb> </template>面包屑动态渲染
数据结构
// 面包屑列表 // 首页 / 学生管理 / 学员管理 const list = ref([ { title: '首页', path: '/dashboard/console' }, { title: '学生管理', path: '/student/classAdmin' }, { title: '学员管理', path: '/student/studentAdmin' } ])动态渲染
<template> <el-breadcrumb separator="/"> <el-breadcrumb-item v-for="item in list" :to="{ path: item.path }" > {{item.title}} </el-breadcrumb-item> </el-breadcrumb> </template>监听路由变化
import { watch,ref } from 'vue'; import { useRoute } from 'vue-router' const route = useRoute() //监听路由变化 watch(route, (to) => { console.log(to) //路由记录 }, { immediate: true })需求分析
/** 分类讨论： 进入首页 /dashboard/console to.matched[0].path = ‘/dashboard/console’ 进入只有一级菜单的路由 /notice/index breadcrumbList:[‘公告管理’] 进入有二级菜单的路由 /echarts/bar breadcrumbList: [‘图表管理’,'柱状图] */
代码实现
//监听路由变化 watch(route, (to) => { //每次切换路由时，清空以前的列表，只保留首页 list.value = [{ title: '首页', path: '/dashboard/console' }] // 如果path= '/dashboard/console',则说明当前是首页，不需要处理 if (to.fullPath === '/dashboard/console') return; //只有一级菜单，则只添加一次 if (to.matched[0].children.length === 1) { list.value.push({ title: to.meta.title, path: to.fullPath }) return; } else { //有二级菜单 to.matched.forEach(item => { let path; // /首页/学生管理/班级管理 (学生管理下的第一个菜单 ) // /首页/学生管理/学员管理 // 如上，单击学生管理，应该跳转至班级管理，所以在学生管理的路由配置中添加 // meta { // home: '/student/studentAdmin' // } if (item.meta.home){ path = item.meta.home }else{ path = item.fullPath } list.value.push({ title: item.meta.title, path }) }) } }, { immediate: true })实现国际化代码
<script lang="ts" setup> import { computed, ref } from 'vue' import zhCn from 'element-plus/dist/locale/zh-cn.mjs' import en from 'element-plus/dist/locale/en.mjs' const language = ref('zh-cn') const locale = computed(() => (language.value === 'zh-cn' ? zhCn : en)) const toggle = () => { language.value = language.value === 'zh-cn' ? 'en' : 'zh-cn' } </script> <template> <el-config-provider :locale="locale"> <el-date-picker type="date" placeholder="Pick a date" :default-value="new Date(2010, 9, 1)" /> </el-config-provider> </template>日期组件国际化【添加中英文切换功能】
**国际化之前
![[360X360.PNG]]
**国际化之后
![[360X360 (1).PNG]]
添加中英文切换功能
图片上传
创建上传图片的组件
在upload/index.vue
<script setup> </script> <template> <div class="upload"> 图片上传 </div> </template> <style lang="scss" scoped> </style>添加路由
// 文件上传-一级路由 { path: '/upload', name: 'upload', component: () => import('@/pages/layout/index.vue'), children:[{ // /moreLang/index path: 'index', name: 'uploadimg', component: () => import('@/pages/upload/index.vue'), }] },配置图片上传模板
<script setup> import { ref, reactive } from 'vue' import { ElMessage } from 'element-plus' const imageUrl = ref('') // 通过header头传递token const headers = ref({ "Authorization": "Bearer " + sessionStorage.getItem('token') }); // 上传成功之后的处理方法 const handleAvatarSuccess = (response, uploadFile) => { imageUrl.value = URL.createObjectURL(uploadFile.raw) } // 上传之前的格式验证：是否为图片，大小是否在2MB const beforeAvatarUpload = (rawFile) => { if (rawFile.type !== 'image/jpeg') { ElMessage.error('Avatar picture must be JPG format!') return false } else if (rawFile.size / 1024 / 1024 > 2) { ElMessage.error('Avatar picture size can not exceed 2MB!') return false } return true } </script> <template> <!-- action：后端的路径地址 show-file-list：是否显示上传成功的文件列表 on-success：当文件上传成功之后 before-upload：文件上传之前 headers：添加headers值，里面主要用来添加token --> <el-upload class="avatar-uploader" action="/api/upload" :show-file-list="false" :on-success="handleAvatarSuccess" :before-upload="beforeAvatarUpload" :headers="headers"> <img v-if="imageUrl" :src="imageUrl" class="avatar" /> <el-icon v-else class="avatar-uploader-icon"> <Plus /> </el-icon> </el-upload> </template> <style scoped> .avatar-uploader .avatar { width: 178px; height: 178px; display: block; } </style> <style> .avatar-uploader .el-upload { border: 1px dashed var(--el-border-color); border-radius: 6px; cursor: pointer; position: relative; overflow: hidden; transition: var(--el-transition-duration-fast); } .avatar-uploader .el-upload:hover { border-color: var(--el-color-primary); } .el-icon.avatar-uploader-icon { font-size: 28px; color: #8c939d; width: 178px; height: 178px; text-align: center; } </style>注意：如果想要自定义上传方式，可以使用下面方式
<el-upload class="avatar-uploader" action="#" :show-file-list="true" :http-request="changeHeader" :on-success="handleAvatarSuccess" :before-upload="beforeAvatarUpload" :headers="headers"> <img v-if="imageUrl" :src="imageUrl" class="avatar" /> <el-icon v-else class="avatar-uploader-icon"> <Plus /> </el-icon> </el-upload> <script> let changeHeader = async (params) => { let fileObject = params.file let pic = new FormData() pic.append('files', fileObject); let url = '/api/uploadImg' let config = { headers: { 'Content-Type': 'multipart/form-data' } } axios({ method: 'post', url: url, data: pic, config: config }).then(response => { console.log(response) }).catch(error => { console.log(error) }) } </script> # Tab标签页 ```HTML <script setup> /** * 分类讨论： * 1. 首次进入后台管理主页 ['首页'] * 2. 切换路由，先判断是否已存在， * 如果不存在则在tab标签上添加当前路由的标题 ['首页','公告管理','图片上传'] , 在标题上还要绑定路由， * 如果已经存在，则只需要获取路由对应的索引，处理高亮 * 3. 控制高亮 * 4. 删除： 当前标签从tabList中删除掉， */ import { watch, ref，Ref } from 'vue'; import { useRoute, useRouter } from 'vue-router'; const route = useRoute() const router = useRouter() interface IRoute{ fullPath:String, name?:String | any, path:String | any, title?:String } // tabList = [{},{},{}] const tabList:Ref = ref([]) const activeIndex = ref(0) //判断是否重复 const isRepeat = (to:IRoute) => { return tabList.value.some((item:IRoute) => item.path === to.fullPath) } watch(route, (to) => { console.log(to) //先判断是否重复 if (!isRepeat(to)) { //不重复 tabList.value.push({ title: to.meta.title, path: to.fullPath }) activeIndex.value = tabList.value.length - 1 } else { // 重复 activeIndex.value = tabList.value.findIndex((item:IRoute)=> item.path === to.fullPath) } }, { immediate: true }) //跳转 const jump = (item:IRoute) => { router.push(item.path) } //关闭 const handleClose = (index) => { //删除前面的 if (index < activeIndex.value) { tabList.value.splice(index, 1) activeIndex.value = activeIndex.value - 1 return; } if (index === activeIndex.value && index !== tabList.value.length - 1) { tabList.value.splice(index, 1) router.push(tabList.value[activeIndex.value].path) return; } //判断当前删除的是最后一个,而且是高亮的 if (index === tabList.value.length - 1 && index === activeIndex.value) { //是最后一个 tabList.value.splice(index, 1) activeIndex.value = tabList.value.length - 1 router.push(tabList.value[activeIndex.value].path) return; } //删后面的 if (index > activeIndex.value) { tabList.value.splice(index, 1) } } </script> <template> <div class="tabs"> <!-- <el-tag type="danger" closable>Tag 3</el-tag> <el-tag type="info" closable>Tag 3</el-tag> --> <el-tag v-for="(item, index) in tabList" :type="activeIndex === index ? 'danger' : 'info'" closable @click="jump(item)" @close="handleClose(index)">{{ item.title }}</el-tag> </div> </template> <style lang="scss" scoped></style>
