•非主体结构元素包括 header、hgroup、footer、address
一、主体结构元素
article
article 标签,从语义化上看为文档、页面,其用法如下:
•一般会带个标题,并放在 header 标签中
•article 元素可以互相嵌套
使用频率极高,强调独立性,多注意下与 header 标签的使用。
section
section 标签,从语义化上看为部分,其用法如下:
•用于页面内容的独立分块,往往是文章的一段
•通常由内容和标题组成,没有标题的内容不推荐使用 section
使用频率低,强调分段分块。
nav
nav 标签,从语义化上看为导航,其用法如下:
•通常作为页面导航的链接组
•侧边栏导航
使用频率高。
aside
aside 标签,从语义化上看为在旁边、侧边,其用法如下:
•在 article 标签中使用时,作为主要内容的附属信息部分,如有关的参考资料、名词解释等。
•在 article 标签外使用时,作为页面或者站点全局的附属信息部分,如侧边栏、博客的友情链接部分、广告区域等。
time
time 标签,从语义化上看为时间,其用法如下:
•代表 24 小时中的某个时刻或某个日期
•表示时刻时允许带时间差
•可定义很多格式的日期和时间
使用频率低。

MicrodatainHTML5enhancesSEOanduserexperiencebyprovidingstructureddatatosearchengines.1)Useitemscope,itemtype,anditempropattributestomarkupcontentlikeproductsorevents.2)TestmicrodatawithtoolslikeGoogle'sStructuredDataTestingTool.3)ConsiderusingJSON-LD

HTML5introducesnewinputtypesthatenhanceuserexperience,simplifydevelopment,andimproveaccessibility.1)automaticallyvalidatesemailformat.2)optimizesformobilewithanumerickeypad.3)andsimplifydateandtimeinputs,reducingtheneedforcustomsolutions.

H5 is HTML5, the fifth version of HTML. HTML5 improves the expressiveness and interactivity of web pages, introduces new features such as semantic tags, multimedia support, offline storage and Canvas drawing, and promotes the development of Web technology.

Accessibility and compliance with network standards are essential to the website. 1) Accessibility ensures that all users have equal access to the website, 2) Network standards follow to improve accessibility and consistency of the website, 3) Accessibility requires the use of semantic HTML, keyboard navigation, color contrast and alternative text, 4) Following these principles is not only a moral and legal requirement, but also amplifying user base.

The H5 tag in HTML is a fifth-level title that is used to tag smaller titles or sub-titles. 1) The H5 tag helps refine content hierarchy and improve readability and SEO. 2) Combined with CSS, you can customize the style to enhance the visual effect. 3) Use H5 tags reasonably to avoid abuse and ensure the logical content structure.

The methods of building a website in HTML5 include: 1. Use semantic tags to define the web page structure, such as, , etc.; 2. Embed multimedia content, use and tags; 3. Apply advanced functions such as form verification and local storage. Through these steps, you can create a modern web page with clear structure and rich features.

A reasonable H5 code structure allows the page to stand out among a lot of content. 1) Use semantic labels such as, etc. to organize content to make the structure clear. 2) Control the rendering effect of pages on different devices through CSS layout such as Flexbox or Grid. 3) Implement responsive design to ensure that the page adapts to different screen sizes.

The main differences between HTML5 (H5) and older versions of HTML include: 1) H5 introduces semantic tags, 2) supports multimedia content, and 3) provides offline storage functions. H5 enhances the functionality and expressiveness of web pages through new tags and APIs, such as and tags, improving user experience and SEO effects, but need to pay attention to compatibility issues.


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