若是你在使用 Vue.js 和 Vue-Router 开发单页面应用。由于每一个页面都是一个 Vue 组件,你须要从服务器端请求数据,而后再让 Vue 引擎来渲染到页面上。前端
例如,这里有个用户我的资料的页面。vue
user.vue 文件以下:vue-router
<template> <div> <h2 v-text="user.name"></h2> <p v-text="user.description"></p> </div> </template> <script> export default{ data(){ return{ user: {} } } } </script>
在动画过渡期间向服务器请求数据,以下:服务器
<script> export default{ data(){ return{ user: {} } }, route: { data: function (transition) { this.getUserDetails(transition); } }, methods: { getUserDetails(transition) { this.$http.get('/users/' + this.$route.params.userName) .then(function (response) { this.user = response.data; transition.next(); }); } } } </script>
这样,咱们能够经过访问变量 $loadingRouteData。就能够实现隐藏全部的页面元素,显示某个正在加载的元素,好比某个 logo 等。前端工程师
<div v-if="$loadingRouteData"> <div class="white-widget grey-bg author-area"> <div class="auth-info row"> <div class="timeline-wrapper"> <div class="timeline-item"> <div class="animated-background"> <div class="background-masker header-top"></div> <div class="background-masker header-left"></div> <div class="background-masker header-right"></div> <div class="background-masker header-bottom"></div> <div class="background-masker subheader-left"></div> <div class="background-masker subheader-right"></div> <div class="background-masker subheader-bottom"></div> </div> </div> </div> </div> </div> </div> <div v-if="!$loadingRouteData"> <div> <h2 v-text="user.name"></h2> <p v-text="user.description"></p> </div> </div>
好比,正在加载的样式代码以下:app
.timeline-item { background: #fff; border-bottom: 1px solid #f2f2f2; padding: 25px; margin: 0 auto; } @keyframes placeHolderShimmer{ 0%{ background-position: -468px 0 } 100%{ background-position: 468px 0 } } .animated-background { animation-duration: 1s; animation-fill-mode: forwards; animation-iteration-count: infinite; animation-name: placeHolderShimmer; animation-timing-function: linear; background: #f6f7f8; background: linear-gradient(to right, #eeeeee 8%, #dddddd 18%, #eeeeee 33%); background-size: 800px 104px; height: 40px; position: relative; } .background-masker { background: #fff; position: absolute; } /* Every thing below this is just positioning */ .background-masker.header-top, .background-masker.header-bottom, .background-masker.subheader-bottom { top: 0; left: 40px; right: 0; height: 10px; } .background-masker.header-left, .background-masker.subheader-left, .background-masker.header-right, .background-masker.subheader-right { top: 10px; left: 40px; height: 8px; width: 10px; } .background-masker.header-bottom { top: 18px; height: 6px; } .background-masker.subheader-left, .background-masker.subheader-right { top: 24px; height: 6px; } .background-masker.header-right, .background-masker.subheader-right { width: auto; left: 300px; right: 0; } .background-masker.subheader-right { left: 230px; } .background-masker.subheader-bottom { top: 30px; height: 10px; } .background-masker.content-top, .background-masker.content-second-line, .background-masker.content-third-line, .background-masker.content-second-end, .background-masker.content-third-end, .background-masker.content-first-end { top: 40px; left: 0; right: 0; height: 6px; } .background-masker.content-top { height:20px; } .background-masker.content-first-end, .background-masker.content-second-end, .background-masker.content-third-end{ width: auto; left: 380px; right: 0; top: 60px; height: 8px; } .background-masker.content-second-line { top: 68px; } .background-masker.content-second-end { left: 420px; top: 74px; } .background-masker.content-third-line { top: 82px; } .background-masker.content-third-end { left: 300px; top: 88px; }
这样,你就有了 Vue-Router 的正在加载时候的效果了。你能够把以上代码写进到一个单独的组件内,在你用的地方引用它就行。动画
这仅是个关于 Vue-Router 加载的组件的简单教程,实际上能够在许多地方来进行改进,this
若是你是一位对 Vue.js 感兴趣的前端工程师,可去这个网上浏览下,了解下国外对 Vue 开发者的要求。code