Web Front-endJS TutorialHow to optimize the first screen loading speed of single-page applications in Vue (details)How to optimize the first screen loading speed of single-page applications in Vue (details)
本篇文章给大家带来的内容是关于vue中如何优化单页应用首屏加载速度（详细） ，有一定的参考价值，有需要的朋友可以参考一下，希望对你有所帮助。
单页应用会随着项目越大，导致首屏加载速度很慢！！！以下给出在下知道的几种优化方案
使用CDN资源,减小服务器带宽压力
路由懒加载
将一些静态js css放到其他地方（如OSS），减小服务器压力
按需加载三方资源，如iview,建议按需引入iview中的组件
使用nginx开启gzip减小网络传输的流量大小
webpack开启gzip压缩
若首屏为登录页，可以做成多入口，登录页单独分离为一个入口
使用CDN资源,减小服务器带宽压力
在index.html中引入cdn资源
...
<body>
<p id="app">
</p>
<!-- built files will be auto injected -->
<script src="https://cdn.bootcss.com/vue/2.5.2/vue.min.js"></script>
<script src="https://cdn.bootcss.com/vue-router/3.0.1/vue-router.min.js"></script>
<script src="https://cdn.bootcss.com/vuex/3.0.1/vuex.min.js"></script>
<script src="https://cdn.bootcss.com/vue-resource/1.5.1/vue-resource.min.js"></script>
</body>
...修改 build/webpack.base.conf.js
module.exports = {
context: path.resolve(__dirname, '../'),
entry: {
app: './src/main.js'
},
externals:{
'vue': 'Vue',
'vue-router': 'VueRouter',
'vuex':'Vuex',
'vue-resource': 'VueResource'
},
...
}修改src/main.js src/router/index.js 注释掉import引入的vue,vue-resource
// import Vue from 'vue' // import VueResource from 'vue-resource' // Vue.use(VueResource)
路由懒加载
const workCircle = r => require.ensure([], () => r(require('@/module/work-circle/Index')), 'workCircle') const workCircleList = r => require.ensure([], () => r(require('@/module/work-circle/page/List')), 'workCircleList')
将一些静态js css放到其他地方（如OSS），减小服务器压力
注意这里的js文件，需要将结果抛出，然后在需要用到该js的组件中import引入
按需加载三方资源，如iview,建议按需引入iview中的组件
按需引用请查看iview官方文档iview
使用nginx开启gzip减小网络传输的流量大小
配置nginx，可以参考Nginx开启Gzip压缩大幅提高页面加载速度
webpack开启gzip压缩
这里需要配合Nginx服务器，Nginx开启gzip
config/index.js中
module.exports = {
build: {
...
// Gzip off by default as many popular static hosts such as
// Surge or Netlify already gzip all static assets for you.
// Before setting to `true`, make sure to:
// npm install --save-dev compression-webpack-plugin
productionGzip: true, // 就是这里开启gzip,vue-cli搭建项目，这里默认为false
productionGzipExtensions: ['js', 'css'],
// Run the build command with an extra argument to
// View the bundle analyzer report after build finishes:
// `npm run build --report`
// Set to `true` or `false` to always turn it on or off
bundleAnalyzerReport: process.env.npm_config_report
}
}build/webpack.prod.conf.js中
使用vue-cli构建项目时，默认会有这段代码
if (config.build.productionGzip) {
const CompressionWebpackPlugin = require('compression-webpack-plugin')
webpackConfig.plugins.push(
new CompressionWebpackPlugin({
asset: '[path].gz[query]',
algorithm: 'gzip',
test: new RegExp(
'\\.(' +
config.build.productionGzipExtensions.join('|') +
')$'
),
threshold: 10240,
minRatio: 0.8
})
)
}若首屏为登录页，可以做成多入口，登录页单独分离为一个入口
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