做线上网站需要多少钱优化的概念

面临问题 : back的后台以jsp嵌套iframe为主, 所以在前端框架要把iframe无刷新嵌套和vue页面进行并行使用,vue的keep-alive只能对虚拟dom树 vtree 进行缓存无法缓存iframe,所以要对iframe进行处理

tab标签的切换效果具体参考若依框架的tab切换,可以去若依看源码,若依源码没有实现这个效果,以下代码基于若依源码进行优化

一开始打算把每个iframe嵌入到router页面里面,但这样会导致几十个iframe页面全部占用内存,用v-show显示,所以要做成点击的才会占有内存

实现效果

1. 每个iframe页面有单独的路由

2. 刷新页面可以对当前iframe页面进行刷新
   

3. vue 页面未缓存和缓存和iframe页面3者进行并行存在,并且达到效果
   

4. 刷新标签可以对iframe页面进行刷新
   

5. 点击才会占用内存
   

解决方案 采用iframe和keeplive分开的方案,用v-show进行判断,把每个iframe嵌入到router里的/frame/: 的动态路由里面,用户点击iiframe的菜单就会生成一个 /iframe/brand-list的页面,页面根据逻辑去找到对应iframe去生成tab,并且建立内存资源达到切换tab不刷新的效果 以下为实现效果*
最终实现效果,5个页面切换 无感刷新,并且iframe动态引入

iframe路由页面
//iframe 路由
const commonPath = import.meta.env.VITE_APP_PATH || 'g-back'getIframeList(){return[{fullPath:`${commonPath}/iframe/brand-list`,path:`${commonPath}/iframe/brand-list`,// name:"brand-list",meta:{title:"品牌维护",link:'baidu.com',}},{fullPath:`${commonPath}/iframe/brand-list`,path:`${commonPath}/iframe/category-goodsType`,// name:"category-goodsType",meta:{title:"品牌分类",link:'baidu.com',}},{fullPath:`${commonPath}/iframe/brand-list`,path:`${commonPath}/iframe/standard-list`,// name:"standard-list",meta:{title:"商品标准",link:'baidu.com',}}]}router.js页面 vue路由
const remainingRouter: AppRouteRecordRaw[] = [{path: `/`,redirect: '/g-back/index',},{path: '/g-back',redirect: '/g-back/index',children: [{path: '/g-back/index',component: () => import('@/views/home/index.vue'),name: 'index',meta: { title: '首页', icon: 'dashboard' }}]},{path: '/404',component: () => import('@/views/404/index.vue'),name: '404',meta: { title: '404', icon: 'dashboard'}},{path: `${commonPath}/iframe/:id`,component: () => import('@/views/iframe/index.vue'),meta: {title: 'iframe',link:true}},{path: '/redirect',// hidden: true,children: [{path: '/redirect/:path(.*)',component: () => import('@/views/redirect/index.vue')}]}
]
以上 所有的iframe页面都存在/iframe/:id 中 ,用动态路由展示iframe的页面 
以上 brand-list 就是品牌维护的页面路由
App.vue页面
<template><section class="app-main"><router-view v-slot="{ Component, route }" :key="routes.path" v-if="!routes.meta.link"><transition name="fade-transform" mode="out-in"><keep-alive :include="tagsViewStore.cachedViews"><component v-if="!route.meta.link" :is="Component"  /></keep-alive></transition></router-view><iframe-toggle /></section>
</template><script setup>
import iframeToggle from "../IframeToggle/index.vue";
import useTagsViewStore from "@/store/modules/tagsView";
const routes = useRoute()
watch(routes,(val)=>{console.log(val)
})
const tagsViewStore = useTagsViewStore();
</script>
注意一定要给router-view key值,以实现每个iframe页面的变化,router-view都会改变它的路由
iframeToggle页面
<template><inner-linkv-for="(item, index) in uniqBy(iframeViews,'path')":key="item.path":iframeId="'iframe' + index"v-show="route.path === item.path":src="iframeUrl(item.meta.link, item.query)"></inner-link>
</template><script setup>
import InnerLink from "../InnerLink/index.vue";
import useTagsViewStore from "@/store/modules/tagsView";
import { uniqBy } from 'lodash'const route = useRoute();
const tagsViewStore = useTagsViewStore();
const iframeViews = computed(()=>tagsViewStore.iframeViews)// console.log(iframeViews.value)
function iframeUrl(url, query) {// if (Object.keys(query).length > 0) {//   let params = Object.keys(query).map((key) => key + "=" + query[key]).join("&");//   return url + "?" + params;// }return url;
}
</script>
InnerLink页面
<template><div v-loading="loading" :style="'height:' + height"><iframe:id="iframeId"style="width: 100%; height: 100%":src="src"frameborder="no"></iframe></div>
</template><script setup>
const props = defineProps({src: {type: String,default: "/"},iframeId: {type: String}
});
const loading = ref(true)
const height = ref(document.documentElement.clientHeight - 94.5 + "px;")onMounted(() => {setTimeout(() => {loading.value = false;}, 300);window.onresize = function temp() {height.value = document.documentElement.clientHeight - 94.5 + "px;";};
})
</script>