This article talks about the newadded tags in HTML5. If you don’t know about the newly added tags in HTML5, let’s take a look at this article together. Okay, stop talking nonsense. Let’s get to the point!
In written examinations or interviews, we often encounter questions about the new HTML5 standard, such as what new tags and APIs have been added, or simply what new features have been added. The following is a summary of the new HTML5 standards. Add tags.
New tags in html5:
<article> 标记定义一篇文章 <aside> 标记定义页面内容部分的侧边栏 <audio> 标记定义音频内容 <canvas> 标记定义图片 <command> 标记定义一个命令按钮 <datalist> 标记定义一个下拉列表 <details> 标记定义一个元素的详细内容 <dialog> 标记定义一个对话框(会话框) <embed> 标记定义外部的可交互的内容或插件 <figure> 标记定义一组媒体内容以及它们的标题<footer> 标记定义一个页面或一个区域的底部 <header> 标记定义一个页面或一个区域的头部 <hgroup> 标记定义文件中一个区块的相关信息 <keygen> 标记定义表单里一个生成的键值 <mark> 标记定义有标记的文本 <meter> 标记定义 measurement within a predefined range <nav> 标记定义导航链接 <output> 标记定义一些输出类型 <progress> 标记定义任务的过程 <rp> 标记是用在Ruby annotations 告诉那些不支持 Ruby元素的浏览器如何去显示 <rt> 标记定义对ruby annotations的解释 <ruby> 标记定义 ruby annotations. <section> 标记定义一个区域 <source> 标记定义媒体资源 <time> 标记定义一个日期/时间 <video> 标记定义一个视频
in the above H5 If you don’t know much about the new tags, you can implement both sides yourself and it will be easy to master!
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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。

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。

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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