Home Web Front-end HTML Tutorial Chrome浏览器加载CSS文件TTFB waiting超时的奇葩问题_html/css_WEB-ITnose

Chrome浏览器加载CSS文件TTFB waiting超时的奇葩问题_html/css_WEB-ITnose

Jun 24, 2016 am 11:29 AM

今天本来调试 requirejs 加载js异常的问题,试了下Chrome浏览器,结果意外发现这个 CSS 加载异常的BUG,非常非常奇怪。

本地测试环境是 wi7x64 安装的 XAMPP 3.2.1 服务器套件没什么特殊配置。

目前就发现只对下面这段 css 代码有异常 seta.css:

@charset "utf-8";html { font-size: 125%; }html,body,h1,h2,h3,h4,h5,h6,p,ul,ol,dl,dt,dd { padding: 0; margin: 0; }body,h1,h2,h3,h4,h5,h6 { font-weight: normal; font-size: .6rem; }table { border-collapse: collapse; border-spacing: 0; }fieldset,img { border: 0; }address,caption,cite,code,dfn,em,strong,th,var { font-weight: normal; font-style: normal; }ul,ol { list-style: none; }abbr,acronym { border: 0; }a,input,textarea { outline: none; -moz-outline-style: none; }a,button,label { cursor: pointer; }input,select { vertical-align: middle; }a { text-decoration: none; }hr,article,aside,details,figcaption,figure,footer,header,menu,nav,section { display: block; margin: 0; padding: 0; }blockquote,q { quotes: none; }blockquote:before,blockquote:after,q:before,q:after { content: ''; }ins { background-color: #FF9; color: #000; text-decoration: none; }mark { background-color: #FF9; color: #000; font-style: italic; font-weight: bold; }del { text-decoration: line-through; }abbr[title],dfn[title] { border-bottom: 1px dotted; cursor: help; }hr { height: 1px; border: 0; border-top: 1px solid #CCC; margin: 1em 0; }
Copy after login

只是一个简单的 CSS reset 代码。(注意没有任何空行的哦)

目前测试只有 Chrome 浏览器出现该情况,测试了两个版本 chrome 46,47.0.2526.106(目前最新稳定版本)

以下测试都是在禁止缓存后N次尝试的结果。

如图中第二行 seta.css 的加载情况,1.4kb本地加载居然用了5秒钟,卡的要死了

这是加载耗时详情,TTFB 等待了 508.83ms , 下载用了5秒钟,真是莫名其妙。

下面这个是用另一个浏览器 360极速Chrome(内核版本 45.0.2454.101) 加载就是正常的

总共只用了 13ms

还有个 Firefox(43.0.3) 的

也是正常的,而且速度也比Chrome快多了

感觉问题可能是出在 css 代码内容上了,于是尝试几种方法修改了下,

只调换代码顺序没有用,
但修改任意参数值后加载就正常了,
或者中间或末尾加个空行也行

感觉应该并不是某个样式导致的

所以最好也最简单的方法就是在所有 css 代码末尾都空一行吧

这样 Chrome 加载就正常了,对这种BUG实在无语

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1658
14
PHP Tutorial
1257
29
C# Tutorial
1231
24
Is HTML easy to learn for beginners? Is HTML easy to learn for beginners? Apr 07, 2025 am 12:11 AM

HTML is suitable for beginners because it is simple and easy to learn and can quickly see results. 1) The learning curve of HTML is smooth and easy to get started. 2) Just master the basic tags to start creating web pages. 3) High flexibility and can be used in combination with CSS and JavaScript. 4) Rich learning resources and modern tools support the learning process.

Understanding HTML, CSS, and JavaScript: A Beginner's Guide Understanding HTML, CSS, and JavaScript: A Beginner's Guide Apr 12, 2025 am 12:02 AM

WebdevelopmentreliesonHTML,CSS,andJavaScript:1)HTMLstructurescontent,2)CSSstylesit,and3)JavaScriptaddsinteractivity,formingthebasisofmodernwebexperiences.

The Roles of HTML, CSS, and JavaScript: Core Responsibilities The Roles of HTML, CSS, and JavaScript: Core Responsibilities Apr 08, 2025 pm 07:05 PM

HTML defines the web structure, CSS is responsible for style and layout, and JavaScript gives dynamic interaction. The three perform their duties in web development and jointly build a colorful website.

What is an example of a starting tag in HTML? What is an example of a starting tag in HTML? Apr 06, 2025 am 12:04 AM

AnexampleofastartingtaginHTMLis,whichbeginsaparagraph.StartingtagsareessentialinHTMLastheyinitiateelements,definetheirtypes,andarecrucialforstructuringwebpagesandconstructingtheDOM.

HTML, CSS, and JavaScript: Essential Tools for Web Developers HTML, CSS, and JavaScript: Essential Tools for Web Developers Apr 09, 2025 am 12:12 AM

HTML, CSS and JavaScript are the three pillars of web development. 1. HTML defines the web page structure and uses tags such as, etc. 2. CSS controls the web page style, using selectors and attributes such as color, font-size, etc. 3. JavaScript realizes dynamic effects and interaction, through event monitoring and DOM operations.

HTML: The Structure, CSS: The Style, JavaScript: The Behavior HTML: The Structure, CSS: The Style, JavaScript: The Behavior Apr 18, 2025 am 12:09 AM

The roles of HTML, CSS and JavaScript in web development are: 1. HTML defines the web page structure, 2. CSS controls the web page style, and 3. JavaScript adds dynamic behavior. Together, they build the framework, aesthetics and interactivity of modern websites.

The Future of HTML: Evolution and Trends in Web Design The Future of HTML: Evolution and Trends in Web Design Apr 17, 2025 am 12:12 AM

The future of HTML is full of infinite possibilities. 1) New features and standards will include more semantic tags and the popularity of WebComponents. 2) The web design trend will continue to develop towards responsive and accessible design. 3) Performance optimization will improve the user experience through responsive image loading and lazy loading technologies.

The Future of HTML, CSS, and JavaScript: Web Development Trends The Future of HTML, CSS, and JavaScript: Web Development Trends Apr 19, 2025 am 12:02 AM

The future trends of HTML are semantics and web components, the future trends of CSS are CSS-in-JS and CSSHoudini, and the future trends of JavaScript are WebAssembly and Serverless. 1. HTML semantics improve accessibility and SEO effects, and Web components improve development efficiency, but attention should be paid to browser compatibility. 2. CSS-in-JS enhances style management flexibility but may increase file size. CSSHoudini allows direct operation of CSS rendering. 3.WebAssembly optimizes browser application performance but has a steep learning curve, and Serverless simplifies development but requires optimization of cold start problems.

See all articles