前端性能优化

wangyang

1、减少http请求数；2、图片优化；3、使用CDN；4、开启GZIP；5、构建优化；

• 减少http请求数
  

1）合并图片。当图片较多时，可以合并为一张大图，从而减少http请求数。
2）合并压缩css样式表和js脚本。
一般我们会把css样式表文件放到文件的头部。比如，放到标签中，这样可以让CSS样式表尽早地完成下载。对应js脚本文件，一般我们把他放到页面的尾部。
3）充分利用缓存。

• 图片优化
  

1）尽可能的使用PNG格式的图片，它相对来说体积较小。
2）图片的延迟加载，也叫做懒加载。

• 使用CDN
  

CDN即内容分发网络，可以使用户就近取得所需内容，解决网络拥挤的状况，提高用户访问网站的响应速度。

• 开启GZIP
  

GZIP即数据压缩，用于压缩使用Internet传输的所有文本资源。开启GZIP的方法很简单，到对应的web服务配置文件中设置一下即可。以Apache为例，在配置文件httpd.conf中添加。

• 构建优化
  

使用 Tree-shaking、Scope hoisting、Code-splitting
Tree-shaking是一种在构建过程中清除无用代码的技术。使用Tree-shaking可以减少构建后文件的体积。

IgorShapovalov

Hi, do you want to dive into the world of business and profits? Presenting the brand-new game, Musk Empire! In Musk Empire, you will build and grow your business empire, choosing from various upgrades that increase your hourly profits. In due course, exchange your in-game profits on a special exchange for real money. Yes, you read that right – real money you can spend however you like. And the best part? There's absolutely no in-game donation. Your success depends on your skills. Join now and reach for the stars. Sign up today and experience the thrill of Musk Empire! join here

IgorShapovalov

IgorShapovalov ??? 2024-8-19 07:08
Hi, do you want to dive into the world of business and profits? Presenting the brand-new game, Musk  ...

Hey there, are you ready to dive into the world of business and profits? Welcoming the brand-new game, Musk Empire! In Musk Empire, you will build and grow your business empire, choosing from various upgrades that boost your hourly profits. In due course, exchange your in-game profits on a special exchange for real money. Yes, you read that right – real money you can spend however you like. And the best part? There's absolutely no in-game donation. It's all about strategy. Join now and transform your virtual wealth into real rewards. Start your empire today and experience the thrill of Musk Empire! invitation link

IgorShapovalov

IgorShapovalov ??? 2024-8-29 18:29
Hey there, are you ready to dive into the world of business and profits? Welcoming the brand-new g ...

Discover the future of gaming with Musk Empire - a groundbreaking Web3 adventure! Build your business empire without in-app purchases. Upgrade your investments to increase your hourly profits. Play, accumulate, and down the line convert in-game currency for real money. Dive into the Empire of Musk today and craft your digital fortune! join here