Xiaoqiang's HTML5 mobile development road (42) - Comparison of HTML4 and HTML5 document structures-H5 Tutorial-php.cn

Generally speaking, when people write documents including HTML, they are accustomed to follow a hierarchical structure similar to "Chapter - Section - Subsection".

Description method in HTML4:

<html>
	<head>

	</head>
	<body>
		<h1>第一章 小强的HTML5移动开发之路</h1>
		<h2>1.1 HTML5概述</h2>
		<h3>1.1.1 HTML5是什么？</h3>
		<h3>1.1.2 HTML5和HTML4的区别</h3>
		<h2>1.2 HTML5快速入门</h2>
		<h3>1.2.1 HTML与XHTML</h3>
	</body>
</html>

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The above code can barely see the main structure of the document. However, in more complex pages, this structure is difficult to see, so the following writing method appears:

<html>
	<head>

	</head>
	<body>
		<p>
			<h1>第一章 小强的HTML5移动开发之路</h1>
			<p>
				<h2>1.1 HTML5概述</h2>
				<p>
					<h3>1.1.1 HTML5是什么？</h3>
				</p>
				<p>
					<h3>1.1.2 HTML5和HTML4的区别</h3>
				</p>
			</p>
			<p>
				<h2>1.2 HTML5快速入门</h2>
				<p>
					<h3>1.2.1 HTML与XHTML</h3>
				</p>
			</p>
		<p>
	</body>
</html>

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in HTML5 , in order to make the document structure clearer and easier to understand, many semantic elements specially used to divide the document structure have been added.

section element: The section element is the most basic and main structural element that divides the page document structure. It is mainly used to organize websites or applications. The content on the program pages is divided hierarchically. A section element usually consists of content and its title.

<html>
	<head>

	</head>
	<body>
		<section>
			<h1>第一章 小强的HTML5移动开发之路</h1>
			<section>
				<h2>1.1 HTML5概述</h2>
				<section>
					<h3>1.1.1 HTML5是什么？</h3>
				</section>
				<section>
					<h3>1.1.2 HTML5和HTML4的区别</h3>
				</section>
			</section>
			<section>
				<h2>1.2 HTML5快速入门</h2>
				<section>
					<h3>1.2.1 HTML与XHTML</h3>
				</section>
			</section>
		<section>
	</body>
</html>

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When using the section element, please note:

1. Do not confuse the section element with the p element. . When a container needs to define styles directly or define behavior through scripts, it is recommended to use p.

2. It is generally not recommended to use section for content without titles. You can use the HTML5 outline detection tool to detect it (http:/ /www.php.cn/)

article element: The article element represents all "text" parts in a document, page or application, and the content it describes should be independent and complete It can be cited externally by itself, which can be a blog, a newspaper article, a forum post, a user review, an independent plug-in, or any other content that is independent of other parts of the context.

In a section element or article element, there should be only one title. If there are two titles, the second title will be implicitly placed into a new section element, as shown in the following code Indicates that the content after the h2 element will be implicitly placed into a new section element.

<article>
	<h1>标题</h1>
	<!--隐式创建出一个新的section元素-->
	<h2>副标题</h2>
</article>

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nav element: The nav element is a group of links that can be used as page navigation. A page can have multiple nav elements, which serve as navigation for the entire page or different parts of the page. In the nav element, the shuffling link element is generally placed in the form of a ul list.

aside element: The aside element is used to represent the subsidiary information part of the current page or article. It can contain references related to the current page or main content. , sidebars, ads, navigation bars, and other parts that are different from the main content.

Let’s implement an example of a blog homepage:

The interface layout is as follows:

<!DOCTYPE html>
<meta charset="UTF-8">
<title>阳光小强的博客</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta content="" name="keywords">
<meta content="" name="description">
<link href="main.css" type="text/css" rel="stylesheet"/>
<p id="blog">
	<header id="bloghead">
		<p id="blogTitle">
			<h1 id="blogname">阳光小强的博客</h1>
			<p id="bloglink">
				http://www.php.cn/
			</p>
		</p>
		<nav id="blognav">
			<ul id="blognavInfo">
				<li>
					<a href="http://blog.csdn.net/dawanganban" id="on">主页</a>
				</li>
				<li>
					<a href="#">博文目录</a>
				</li>
			</ul>
		</nav>
	</header>
	<p id="blogbody">
	<p id="column_1">
	<aside>
		<section>
			<header>
				<h1>个人资料</h1>
			</header>
			<p id="connBody1">
				<p>
				<figure>
					<img src="image\head.jpg">
					<figcaption>阳光小强的博客</figcaption>
				</figure>
				</p>
				<p id="pSpecial">
					<p>本人目前从事移动互联网开发，希望结识更多朋友</p>
					<p>推荐专栏：</p>
					<p>
						<a target="_blank"
							href="http://blog.csdn.net/column/details/dawanganban-html5.html">
							小强的HTML5移动开发之路
						</a>
					</p>
					<p>联系方式：739299362</p>
				</p>
			</p>
			<p id="connFoot1"></p>
		</section>
		<section id="conn2">
			<header id="connHead2">
				<h1>分类</h1>
				<span id="edit1">
					<a href="javascript:;"
						onclick="window.CateDialog.show();return false;">
						[<cite>管理</cite>]
					</a>
				</span>
			</header>
			<p id="connBody2">
				<nav id="classList">
					<ul>
						<li id="dot1">
							<a target="_blank" href="#">全部博文</a>
							<em>(62)</em>
						</li>
						<li id="dot2">
							<a href="#" target="_blank">HTML5</a>
							<em>(40)</em>
						</li>
						<li id="dot3">
							<a href="#" target="_blank">HTML5</a>
							<em>(40)</em>
						</li>
						<li id="dot4">
							<a href="#" target="_blank">HTML5</a>
							<em>(40)</em>
						</li>
						<li id="dot5">
							<a href="#" target="_blank">HTML5</a>
							<em>(40)</em>
						</li>
					</ul>
				</nav>
			</p>
			<p id="connFoot2"></p>
		</section>
		<section id="conn3">
			<header id="connHead3">
				<h1>评论</h1>
			</header>
			<p id="connBody3">
				<nav id="zComments">
					<ul id="zCommentsUl">
						<li id="commentsCell_linedot1">
							<p id="commentsH1">
								<span id="commentsName_txtc_dot1">
									<a href="#" target="_blank" title="随风">
									随风
									</a>
								</span>
								<time datetime="2014-03-31T16:59">03-31 16:59</time>
							</p>
							<p id="commentsContants1">
								<p id="commentsContantsTxt1">
									<a href="#" target="_blank">
										 博主，您好。为什么我在url中输...
									</a>
								</p>
							</p>
						</li>
						<li id="commentsCell_linedot2">
							<p id="commentsH1">
								<span id="commentsName_txtc_dot1">
									<a href="#" target="_blank" title="随风">
									随风
									</a>
								</span>
								<time datetime="2014-03-31T16:59">03-31 16:59</time>
							</p>
							<p id="commentsContants1">
								<p id="commentsContantsTxt1">
									<a href="#" target="_blank">
										 博主，您好。为什么我在url中输...
									</a>
								</p>
							</p>
						</li>
						<li id="commentsCell_linedot3">
							<p id="commentsH1">
								<span id="commentsName_txtc_dot1">
									<a href="#" target="_blank" title="随风">
									随风
									</a>
								</span>
								<time datetime="2014-03-31T16:59">03-31 16:59</time>
							</p>
							<p id="commentsContants1">
								<p id="commentsContantsTxt1">
									<a href="#" target="_blank">
										 博主，您好。为什么我在url中输...
									</a>
								</p>
							</p>
						</li>
						<li id="commentsCell_linedot4">
							<p id="commentsH1">
								<span id="commentsName_txtc_dot1">
									<a href="#" target="_blank" title="随风">
									随风
									</a>
								</span>
								<time datetime="2014-03-31T16:59">03-31 16:59</time>
							</p>
							<p id="commentsContants1">
								<p id="commentsContantsTxt1">
									<a href="#" target="_blank">
										 博主，您好。为什么我在url中输...
									</a>
								</p>
							</p>
						</li>
					</ul>
				</nav>
			</p>
			<p id="connFoot3"></p>
		</section>
	</aside>
</p>
<p id="column_2">
	<section id="conn4">
		<header id="connHead4">
			<h1>分类</h1>
			<span id="edit2">
				<a href="javascript:;"
					onclick="window.CateDialog.show();return false;">
					[<cite>管理</cite>]
				</a>
			</span>
		</header>
		<p id="connBody4">
			<p id="bloglist">
				<section>
					<header>
						<p id="blog_title_h1">
							<h1 id="blog_title1">
								<a href="#" target="_blank">
									HTML5中新增number元素的ValueAsNumber属性
								</a>
							</h1>
							<img title="此博文包含图片" src="image/head.jpg" id="icon1">
							<time datetime="2014-03-31T18:30" pubdate>(2014-03-31 18:30)</time>
						</p>
						<p id="articleTag1">
							<span id="txtb1">分类：</span>
							<a target="_blank" href="#">HTML5</a>
						</p>
					</header>
					<p id="content1">
						<p>   在使用JavaScript脚本对HTML5中number元素进行操作的时候，可以使用valueAsNumber属性很轻松地设置和读取元素中的数值。</p>
						<p>   在使用JavaScript脚本对HTML5中number元素进行操作的时候，可以使用valueAsNumber属性很轻松地设置和读取元素中的数值。</p>
						<p>   在使用JavaScript脚本对HTML5中number元素进行操作的时候，可以使用valueAsNumber属性很轻松地设置和读取元素中的数值。</p>
						<p>   在使用JavaScript脚本对HTML5中number元素进行操作的时候，可以使用valueAsNumber属性很轻松地设置和读取元素中的数值。</p>
						<p>   在使用JavaScript脚本对HTML5中number元素进行操作的时候，可以使用valueAsNumber属性很轻松地设置和读取元素中的数值。</p>
					</p>
					<footer id="tagMore1">
						<p id="tag_txtc1">
							<a href="#" target="_blank">阅读</a> | 
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							<a href="javascript:;" onclick="return false;">收藏</a> 
						</p>
						<p id="more1">
							<span id="smore1">
								<a href="#" target="_blank">查看全文</a>>>
							</span>
						</p>
					</footer>
				</section>
			</p>
		</p>
	</section>
</p>

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Style file main.css

p#blog{
	background-position:50% 0%;
	background-image:url(image/blogb.png);
	width:100%;
	/*background-repeat:no-repeat;*/
}

ul{
	list-style:none;
}

p#blogbody{
	margin:0px;
}

[id^=column_]{
	display:inline;
	float:left;
	overflow:hidden;
}

p#column_1{
	margin-left:20px;
	width:210px;
}

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