Let’s take a look at the renderings first (regardless of color matching):
(Learning video sharing: html5 video tutorial)
We must first understand how to implement this clock. Don’t think about animation for the time being, learn to dismantle the problem and implement it step by step.
First we need to draw a square with a border, give a rounded corner to achieve the outermost ring, and then rotate a long rectangle multiple times to achieve the scale
Just draw another white circle to cover it to achieve the standard scale
Finally add three rectangles and the small circle in the middle The initial state of the clock can be realized
Code implementation
After understanding the above process, the code implementation is much simpler. The only thing that needs to be considered is the optimization of the code. In order to make it simple and clear, below How to implement the first step, there is a lot of repeated code.
Regarding animation, we only need to set the rotation animation, and the animation of the hour, minute and second hands only need to change different times.
Please see the code for specific details:
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>时钟</title> <style> *{ padding: 0; margin: 0; } .clock{ width: 300px; height: 300px; border: 10px solid #ccc; /*百分比参照的是实际宽高*/ border-radius: 50%; margin: 20px auto; position: relative; } .line{ width: 8px; height: 300px; background-color: #ccc; position: absolute; /*实现居中*/ /*参照父元素的宽*/ left: 50%; top: 0; /*参照元素本身*/ transform: translate(-50%,0); /*保留,否则会被覆盖*/ } .line2{ transform: translate(-50%,0) rotate(30deg); } .line3{ transform: translate(-50%,0) rotate(60deg); } .line4{ transform: translate(-50%,0) rotate(90deg); } .line5{ transform: translate(-50%,0) rotate(120deg); } .line6{ transform: translate(-50%,0) rotate(150deg); } .cover{ width: 250px; height: 250px; border-radius: 50%; background-color: #fff; position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); } .hour{ width: 6px; height: 80px; background-color: red; position: absolute; left: 50%; top: 50%; transform: translate(-50%,-100%); /*设置轴心*/ transform-origin: center bottom; /*动画*/ -webkit-animation: move 43200s linear infinite; } .minute{ width: 4px; height: 90px; background-color: green; position: absolute; left: 50%; top: 50%; transform: translate(-50%,-100%); /*设置轴心*/ transform-origin: center bottom; /*动画*/ -webkit-animation: move 3600s linear infinite; } .second{ width: 2px; height: 100px; background-color: blue; position: absolute; left: 50%; top: 50%; transform: translate(-50%,-100%); /*设置轴心*/ transform-origin: center bottom; /*动画*/ -webkit-animation: move 60s infinite steps(60); /*linear与step(60)重复*/ } .center{ width:20px; height:20px; background-color: #ccc; border-radius: 50%; position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); } /*创建移动动画*/ @keyframes move{ 0%{ transform: translate(-50%,-100%) rotate(0deg); } 100%{ transform: translate(-50%,-100%) rotate(360deg); } } </style> </head> <body> <div> <div class="line line1"></div> <div class="line line2"></div> <div class="line line3"></div> <div class="line line4"></div> <div class="line line5"></div> <div class="line line6"></div> <div></div> <div></div> <div></div> <div></div> <div></div> </div> </body> </html>
Related recommendations: html5 tutorial
The above is the detailed content of Use html5 to create a clock animation effect. For more information, please follow other related articles on the PHP Chinese website!

html5的div元素默认一行不可以放两个。div是一个块级元素,一个元素会独占一行,两个div默认无法在同一行显示;但可以通过给div元素添加“display:inline;”样式,将其转为行内元素,就可以实现多个div在同一行显示了。

html5中列表和表格的区别:1、表格主要是用于显示数据的,而列表主要是用于给数据进行布局;2、表格是使用table标签配合tr、td、th等标签进行定义的,列表是利用li标签配合ol、ul等标签进行定义的。

固定方法:1、使用header标签定义文档头部内容,并添加“position:fixed;top:0;”样式让其固定不动;2、使用footer标签定义尾部内容,并添加“position: fixed;bottom: 0;”样式让其固定不动。

HTML5中画布标签是“<canvas>”。canvas标签用于图形的绘制,它只是一个矩形的图形容器,绘制图形必须通过脚本(通常是JavaScript)来完成;开发者可利用多种js方法来在canvas中绘制路径、盒、圆、字符以及添加图像等。

html5中不支持的标签有:1、acronym,用于定义首字母缩写,可用abbr替代;2、basefont,可利用css样式替代;3、applet,可用object替代;4、dir,定义目录列表,可用ul替代;5、big,定义大号文本等等。

html5废弃了dir列表标签。dir标签被用来定义目录列表,一般和li标签配合使用,在dir标签对中通过li标签来设置列表项,语法“<dir><li>列表项值</li>...</dir>”。HTML5已经不支持dir,可使用ul标签取代。

html5是指超文本标记语言(HTML)的第五次重大修改,即第5代HTML。HTML5是Web中核心语言HTML的规范,用户使用任何手段进行网页浏览时看到的内容原本都是HTML格式的,在浏览器中通过一些技术处理将其转换成为了可识别的信息。HTML5由不同的技术构成,其在互联网中得到了非常广泛的应用,提供更多增强网络应用的标准机。

3种取消方法:1、给td元素添加“border:none”无边框样式即可,语法“td{border:none}”。2、给td元素添加“border:0”样式,语法“td{border:0;}”,将td边框的宽度设置为0即可。3、给td元素添加“border:transparent”样式,语法“td{border:transparent;}”,将td边框的颜色设置为透明即可。


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

SublimeText3 Linux new version
SublimeText3 Linux latest version

SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

WebStorm Mac version
Useful JavaScript development tools

SublimeText3 English version
Recommended: Win version, supports code prompts!
