vue骨架屏优化渲染问题

参考文章：
vue-cli 构建的项目如何加入骨架屏 skeleton
https://blog.csdn.net/u012878...
让骨架屏更快渲染 - xiaOp的博客
https://juejin.im/entry/5ab37...

vue-cli创建项目

进去当前项目，执行命令： npm install vue-skeleton-webpack-plugin
在src目录下创建Skeleton.vue文件，把代码拷进去
在src目录下创建entry-skeleton.js文件,把代码拷进去
在build目录下创建webpack.skeleton.conf.js,把代码拷进去
然后在webpack.dev.conf.js和webpack.prod.conf.js分别加入

const SkeletonWebpackPlugin = require('vue-skeleton-webpack-plugin')

// inject skeleton content(DOM & CSS) into HTML 以下代码放在 plugins参数中

new SkeletonWebpackPlugin({
   webpackConfig: require('./webpack.skeleton.conf'),
   quiet: true  
})

简单骨架屏配置修改

1.首先修改我src目录下的main.js文件，

let app = new Vue({
  router,
  store,
  components: { App },
  template: '<App/>'
})

window.mountApp = () => {
  app.$mount('#app')
}
if (process.env.NODE_ENV === 'production') {
  if (window.STYLE_READY) {
    window.mountApp()
  }
} else {
  window.mountApp()
}

2.修改index.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1.0">
    <title>skeleton-demo</title>
    <% for (var jsFilePath of htmlWebpackPlugin.files.js) { %>
        <link rel="preload" href="<%= jsFilePath %>" as="script">
    <% } %>
    <% for (var cssFilePath of htmlWebpackPlugin.files.css) { %>
        <link rel="preload" href="<%= cssFilePath %>" as="style" onload="this.onload=null;this.rel='stylesheet';window.STYLE_READY=1;window.mountApp&&window.mountApp();">
        <noscript><link rel="stylesheet" href="<%= cssFilePath %>"></noscript>
    <% } %>
    <script>!function(t){"use strict";t.loadCSS||(t.loadCSS=function(){});var e=loadCSS.relpreload={};if(e.support=function(){var e;try{e=t.document.createElement("link").relList.supports("preload")}catch(t){e=!1}return function(){return e}}(),e.bindMediaToggle=function(t){function e(){t.media=a}var a=t.media||"all";t.addEventListener?t.addEventListener("load",e):t.attachEvent&&t.attachEvent("onload",e),setTimeout(function(){t.rel="stylesheet",t.media="only x"}),setTimeout(e,3e3)},e.poly=function(){if(!e.support())for(var a=t.document.getElementsByTagName("link"),n=0;n<a.length;n++){var o=a[n];"preload"!==o.rel||"style"!==o.getAttribute("as")||o.getAttribute("data-loadcss")||(o.setAttribute("data-loadcss",!0),e.bindMediaToggle(o))}},!e.support()){e.poly();var a=t.setInterval(e.poly,500);t.addEventListener?t.addEventListener("load",function(){e.poly(),t.clearInterval(a)}):t.attachEvent&&t.attachEvent("onload",function(){e.poly(),t.clearInterval(a)})}"undefined"!=typeof exports?exports.loadCSS=loadCSS:t.loadCSS=loadCSS}("undefined"!=typeof global?global:this);</script>
  </head>
  <body>
    <div id="app"></div>
    <!-- built files will be auto injected -->
  </body>
</html>

3.编写并引入插件 OmmitCSSPlugin 监听 HTMLWebpackPlugin 的事件，过滤掉 CSS。这样插件就不会自动插入 <link>了，在build目录下创建ommit-css-webpack-plugin.js文件。

代码如下：

module.exports = class OmmitCSSPlugin {
    constructor() {}
    apply(compiler) {
        compiler.plugin('compilation', (compilation) => {
            compilation.plugin(
                'html-webpack-plugin-alter-asset-tags',
                (args, cb) => {
                    args.head = args.head.filter((link) => link.attributes.rel !== 'stylesheet');
                    cb(null, args);
                }
            );
        });
    }
}

4.在webpack.prod.conf.js文件中引入插件

const OmmitCSSPlugin = require('./ommit-css-webpack-plugin')
//在plugins参数里 new 一下
new OmmitCSSPlugin()

5.先build后部署网站（只要通过服务器地址访问即可），访问index.html 效果就出来了(一定要run build后再通过服务地址访问）

vue骨架屏优化渲染问题