Table of Contents
回复内容:
Home Web Front-end H5 Tutorial 用media screen做响应式布局,为何断点设为800px时chrome会在783px就变化?

用media screen做响应式布局,为何断点设为800px时chrome会在783px就变化?

Jun 07, 2016 am 08:42 AM

回复内容:

谢邀,这个不是@media的bug, 而是Chrome 和 Safari 计算你的max-width的800px其实是 (780px body + 20px scrollbar),也就是说滚动条有20像素,其实精确一点应该是780不是783。
Firefox, Opera 和 IE就不计算20的滚动条宽度。如果你要解决这个问题,让不同浏览器的滚动条宽度计算准确,请加入body { overflow-y: scroll; }.
由于浏览器版本,滚动条宽度会在15px,17px,20px,但是你设计过程中建议按照20px的标准去计算,这样能避免不同浏览器不同版本的宽度误差,下面是一些版本对应的滚动条宽度参考:

用media screen做响应式布局,为何断点设为800px时chrome会在783px就变化?
我测试过现在最新的chrome,safari,firefox的mac版本滚动条经过精确测算是15px,windows版本下的未检测,感兴趣可以自己去测试下.


想更深入的学习css 的盒模型,不错过任何一个编码中的细节,请参看W3C的官方标准资料:CSS basic box model
测试你不同的操作系统的不同浏览器滚动条,直接点开网址即可测试:textfixer.com/tutorials 泻药
因为是针对视口的设置
所以你得把滚动条宽度加进去…… 泻药
题主理解有误,下面一步步的来解释。
先说@media的语法,参考@media - CSS
@media <media-query-list> {
  <group-rule-body>
}
Copy after login
赞同 @Chuckie Chang的回答,chrome把滚动条的width也算在媒体查询里。你把chrome调试工具换成右列显示,就会发现800px时媒体查询生效了
用media screen做响应式布局,为何断点设为800px时chrome会在783px就变化? 泻药~
不太懂,老板要求一般都是用JS判断用户是哪个尺寸的屏幕,然后直接替换相应的session["css"]文件这样来做。前台输出?css=session["css"]。我们不太害怕效率耗损~ 因为who care ~ 至于对于某个尺寸宽高的CSS代码的编写我们不参与~ meta没加上
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

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

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)

How to run the h5 project How to run the h5 project Apr 06, 2025 pm 12:21 PM

Running the H5 project requires the following steps: installing necessary tools such as web server, Node.js, development tools, etc. Build a development environment, create project folders, initialize projects, and write code. Start the development server and run the command using the command line. Preview the project in your browser and enter the development server URL. Publish projects, optimize code, deploy projects, and set up web server configuration.

What exactly does H5 page production mean? What exactly does H5 page production mean? Apr 06, 2025 am 07:18 AM

H5 page production refers to the creation of cross-platform compatible web pages using technologies such as HTML5, CSS3 and JavaScript. Its core lies in the browser's parsing code, rendering structure, style and interactive functions. Common technologies include animation effects, responsive design, and data interaction. To avoid errors, developers should be debugged; performance optimization and best practices include image format optimization, request reduction and code specifications, etc. to improve loading speed and code quality.

How to make h5 click icon How to make h5 click icon Apr 06, 2025 pm 12:15 PM

The steps to create an H5 click icon include: preparing a square source image in the image editing software. Add interactivity in the H5 editor and set the click event. Create a hotspot that covers the entire icon. Set the action of click events, such as jumping to the page or triggering animation. Export H5 documents as HTML, CSS, and JavaScript files. Deploy the exported files to a website or other platform.

What is the H5 programming language? What is the H5 programming language? Apr 03, 2025 am 12:16 AM

H5 is not a standalone programming language, but a collection of HTML5, CSS3 and JavaScript for building modern web applications. 1. HTML5 defines the web page structure and content, and provides new tags and APIs. 2. CSS3 controls style and layout, and introduces new features such as animation. 3. JavaScript implements dynamic interaction and enhances functions through DOM operations and asynchronous requests.

What application scenarios are suitable for H5 page production What application scenarios are suitable for H5 page production Apr 05, 2025 pm 11:36 PM

H5 (HTML5) is suitable for lightweight applications, such as marketing campaign pages, product display pages and corporate promotion micro-websites. Its advantages lie in cross-platformity and rich interactivity, but its limitations lie in complex interactions and animations, local resource access and offline capabilities.

How to make pop-up windows with h5 How to make pop-up windows with h5 Apr 06, 2025 pm 12:12 PM

H5 pop-up window creation steps: 1. Determine the triggering method (click, time, exit, scroll); 2. Design content (title, text, action button); 3. Set style (size, color, font, background); 4. Implement code (HTML, CSS, JavaScript); 5. Test and deployment.

Is H5 page production a front-end development? Is H5 page production a front-end development? Apr 05, 2025 pm 11:42 PM

Yes, H5 page production is an important implementation method for front-end development, involving core technologies such as HTML, CSS and JavaScript. Developers build dynamic and powerful H5 pages by cleverly combining these technologies, such as using the &lt;canvas&gt; tag to draw graphics or using JavaScript to control interaction behavior.

What Does H5 Refer To? Exploring the Context What Does H5 Refer To? Exploring the Context Apr 12, 2025 am 12:03 AM

H5referstoHTML5,apivotaltechnologyinwebdevelopment.1)HTML5introducesnewelementsandAPIsforrich,dynamicwebapplications.2)Itsupportsmultimediawithoutplugins,enhancinguserexperienceacrossdevices.3)SemanticelementsimprovecontentstructureandSEO.4)H5'srespo

See all articles