To know what HTML5 front-end is, we must first understand what HTML5 is, what is front-end, and their relationship. Let’s find out more with the editor below.
#What is html5?
The so-called "HTML5" refers to the fifth version of "HTML", and "HTML" refers to the standard language for describing web pages. Therefore, HTML5 is the fifth version of "the standard language for describing web pages."
What is the front end?
In a more traditional sense, the website is divided into front-end and back-end. The front-end is what we commonly call the page and the various display effects we often see. The back-end is the management according to the understanding. The backend mainly refers to the backend that manages, updates, and maintains the website.
Baidu Encyclopedia defines it this way: The front-end is the front-end part of the website, which runs on PC, mobile and other browsers and displays the web pages for users to browse. With the development of Internet technology, the application of HTML5, CSS3, and front-end frameworks, cross-platform responsive web design can adapt to various screen resolutions, and perfect dynamic design can bring users a very high user experience.
That is to say, html5 and front-end technology have a subordinate relationship. HTML5 is part of front-end development, but the technology included in front-end development is very broad. In addition to html5, it also requires Learn other technologies such as: CSS, div, Java, jQuery, website performance optimization, SEO, PHP basics and server-side basics.
To sum up, the html5 front-end is actually a collection of front-end technology development, which mainly includes front-end technologies such as html5, CSS3, and JS.
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本篇文章带大家了解一下HTML(超文本标记语言),介绍一下HTML的本质,HTML文档的结构、HTML文档的基本标签和图像标签、列表、表格标签、媒体元素、表单,希望对大家有所帮助!

不算。html是一种用来告知浏览器如何组织页面的标记语言,而CSS是一种用来表现HTML或XML等文件样式的样式设计语言;html和css不具备很强的逻辑性和流程控制功能,缺乏灵活性,且html和css不能按照人类的设计对一件工作进行重复的循环,直至得到让人类满意的答案。

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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。

在html中,document是文档对象的意思,代表浏览器窗口的文档;document对象是window对象的子对象,所以可通过“window.document”属性对其进行访问,每个载入浏览器的HTML文档都会成为Document对象。

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。

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。


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