Common Other tags in HTML
1. Header tag part
1.
2.
href Attribute: Specify the directory of all hyperlinks in the web page. It can be a local directory or a network directory. Note that the directory must be represented by / at the end. Only works on hyperlinked files with relative paths.
target attribute: Specifies how to open a hyperlink. For example, _blank means that all hyperlinks are opened and displayed in new windows.
3. :
name attribute: Description information of the web page. When keywords is taken, the content of the content attribute is searched as the keyword of the search engine.
http-equiv attribute: simulates the response header of the HTTP protocol.
Example:
<meta http-equiv="refresh" content="3;url=http://www.sina.com.cn" />
means that you will automatically be redirected to the Sina page after 3 seconds of opening this page.
4. :
rel attribute: describes the relationship between the target document and the current document.
type attribute: document type.
media: Specifies which device the target document will work on.
Example:
<link rel="stylesheet" type="text/css" media="screen,print" href="a.css" />
2. Other common tags
direction Attribute: left right down up
behavior Attribute: scroll alternate slide
< ;pre>: The text content can be displayed on the page as it appears in the code area.
3. Classification of tags
1 nbsp;HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> 2 3 4 <meta> 5 <title>Untitled Document</title> 6 7 8 <p>这是一个p区域1</p> 9 <p>这是一个p区域2</p> 10 <span>span区域1</span> 11 <span>span区域2</span> 12 <p>这是一个段落1</p> 13 <p>这是一个段落2</p> 14 15 <!-- 16 标签分为两大类。 17 1,块级标签(元素):标签结束后都有换行。p p dl table title ol ul 18 2,行内标签(元素):标签结束后没有换行。 font span img input select a 19 --> 20
-
21
- ddddd 22
- eeeee 23
p has no direct meaning, it just encapsulates data and can be operated using other languages defined by us. Usually p+css.
sapn is also such a tag, except that the span tag is an inline tag and p is a block-level tag.
p is a paragraph tag, not only line breaks, but also blank lines before and after.
4. XHTML and XML
In layman’s terms: Configuration file.
XHTML is Extensible HyperText Markup Language (Extensible HyperText MarkupLanguage).
l XHTML was launched by the w3c organization in 2000 to enhance HTML. It was originally intended to replace HTML, but it was found that there were too many web pages written in HTML on the Internet, so it failed! It can be understood that it is an upgraded version of HTML (HTML4.01). l XHTML has a more rigorous code structure and is an application based on XML. XML is Extensible Markup Language (Extensible Markup Language)l XML is a description of data information. HTML is the description of the data display. l XML code regulations are more strict. For example, if the tag does not end, it is considered an error. l The XML specification can be interpreted by more applications and will become a universal data exchange language. Each server andframework use XML as a configuration file.
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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。

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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。

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