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HomeWeb Front-endH5 TutorialSummary of seven legends about HTML5_html5 tutorial skills

A lot of the cool HTML5 websites we see actually have nothing to do with HTML5, but are generated by CSS3 and jQuery. CSS3 and jQuery are new technologies like HTML5, and they are parallel concepts to HTML5.
This article talks about 7 legends about HTML5, that is, misunderstandings:)
Myth #1: Because Apple does not support Flash, people invented HTML5
A big tree attracts the wind, Apple It seems that he is often accused of various things. Although HTML5 can provide some very useful features for mobile devices, it was not created with this requirement in mind. In fact, as early as 2004, Opera and Mozilla defined some standards for good design in order to solve the mess of web standards. Their purpose is simple, to submit these standards to the W3C to create a better, faster HTML standard. This standard was not accepted until 2006. In just three years, a new standard was drafted, approved and put into use.
 Legend #2: HTML5 will not mature until 2022
I don’t know who said this. We know that the draft document of HTML5 has been reviewed and approved in 2009, which means that no new content can be added and there will be no significant changes. You can use HTML5 now without worrying about backwards compatibility. You can make older browsers support complex Canvas through some lightweight JavaScript. All new browser versions support HTML5. It's not the HTML tags you need to worry about, it's the CSS. Many older browsers have poor support for CSS3.
 Myth #3: HTML5 requires CSS3 support
While CSS3 can add a lot of features to HTML5, such as semantic class names, it is by no means required. HTML5 is just markup language, you can certainly use HTML5 CSS2, it's just not as elegant. Since HTML5 removes attributes and tags, you need to specify all styles for each element. For example, in HTML5, in order for the browser to render the page correctly, you need to set the "display:block" declaration for each page element. In short, HTML5 requires styles to make the page look better, but it doesn't have to be CSS3.
 Myth #4: HTML5 breaks accessibility
On the contrary, HTML5 was designed from the ground up with accessibility in mind. Every element supports WIA ARIA logo characters. These roles allow devices such as screen readers to better understand the content of the page.
 Myth #5: HTML5 is the Flash killer
 Flash is still used by countless websites and developers. The misunderstanding between Flash and HTML5 stems from the feud between Adobe and Apple and the rapid popularity of HTML5 audio and video applications. Although HTML5 can support a small amount of video playback well, HTML5 requires more coding resources than Flash and lacks the technology provided by those browser plug-ins. Currently, companies like Vimeo and YouTube are using HTML5 technology extensively to promote this technology, and they will not completely abandon Flash in the short term. Developer Viki Hoo has some compelling arguments for why Flash will still be widely used.
But from a page design perspective, we hope to be freed from FLash as soon as possible. HTML5 is easier to learn and use. It requires no plugins, loads quickly, and is mobile-friendly. So it’s not that HTML5 will kill Flash, it’s that HTML5 will dominate the mobile design and development market.
 Legend #6: As long as I add HTML5 doctype to my website, it is an HTML5 website
From a browser perspective, yes, any website that adds HTML5 doctype will Considered an HTML5 website. But HTML5 is more than just a doctype. It is a complete set of best practices, semantic tags, typographic elements such as

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html5的div一行可以放两个吗html5的div一行可以放两个吗Apr 25, 2022 pm 05:32 PM

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是什么html5中列表和表格的区别是什么Apr 28, 2022 pm 01:58 PM

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。

html5怎么让头和尾固定不动html5怎么让头和尾固定不动Apr 25, 2022 pm 02:30 PM

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中不支持的标签有哪些html5中不支持的标签有哪些Mar 17, 2022 pm 05:43 PM

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中画布标签是什么HTML5中画布标签是什么May 18, 2022 pm 04:55 PM

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废弃了哪个列表标签html5废弃了哪个列表标签Jun 01, 2022 pm 06:32 PM

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怎么取消td边框Html5怎么取消td边框May 18, 2022 pm 06:57 PM

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。

html5为什么只需要写doctypehtml5为什么只需要写doctypeJun 07, 2022 pm 05:15 PM

因为html5不基于SGML(标准通用置标语言),不需要对DTD进行引用,但是需要doctype来规范浏览器的行为,也即按照正常的方式来运行,因此html5只需要写doctype即可。“!DOCTYPE”是一种标准通用标记语言的文档类型声明,用于告诉浏览器编写页面所用的标记的版本。

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