单页应用有个无法避免的问题就是首屏加载慢，虽然可以通过gzip、路由懒加载、CDN、提高服务器带宽等手段，首屏加载速度仍然比传统多页应用慢一些。
为了提高用户体验，首屏添加loading动画很有必要，并且实现特别简单。
vue-cli3生成的项目中，打开index.html会发现如下代码
<body> <noscript> <strong>We're sorry but doesn't work properly without JavaScript enabled. Please enable it to continue.</strong> </noscript> <div></div> <!-- built files will be auto injected -->
我们只需要在这个div中插入loading代码即可,vue初始化完成后会自动替换
<div>此处插入loading代码</div>
以下是我实现的一种动画效果，可自行替换
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"/> <meta http-equiv="X-UA-Compatible" content="chrome=1"/> <link href="<%= BASE_URL %>favicon.ico" > <link type="text/css" href="https://at.alicdn.com/t/font_1112431_q8oa3yvrwbh.css" > <title>demo</title> <style> .spinner { margin: 100px auto; width: 50px; height: 60px; text-align: center; font-size: 10px; } .spinner > div { background-color: #FE3C71; height: 100%; width: 6px; display: inline-block; -webkit-animation: stretchDelay 1.2s infinite ease-in-out; animation: stretchDelay 1.2s infinite ease-in-out; } .spinner .rect2 { -webkit-animation-delay: -1.1s; animation-delay: -1.1s; } .spinner .rect3 { -webkit-animation-delay: -1.0s; animation-delay: -1.0s; } .spinner .rect4 { -webkit-animation-delay: -0.9s; animation-delay: -0.9s; } .spinner .rect5 { -webkit-animation-delay: -0.8s; animation-delay: -0.8s; } @-webkit-keyframes stretchDelay { 0%, 40%, 100% { -webkit-transform: scaleY(0.4) } 20% { -webkit-transform: scaleY(1.0) } } @keyframes stretchDelay { 0%, 40%, 100% { transform: scaleY(0.4); -webkit-transform: scaleY(0.4); } 20% { transform: scaleY(1.0); -webkit-transform: scaleY(1.0); } } </style> </head> <body> <noscript> <strong>We're sorry but demo doesn't work properly without JavaScript enabled. Please enable it to continue.</strong> </noscript> <div> <div> <div></div> <div></div> <div></div> <div></div> <div></div> </div> </div> <!-- built files will be auto injected --> </body> </html>
以上这篇Vue防止白屏添加首屏动画的实例就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持脚本之家。
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