Why do you need to use the tag?
In the web page we create, if you want it to be accessible to more people, the best way is to find your URL through a search engine, so your web page needs to have keywords. Let search engines recognize it, so the tag in HTML has this function. It writes the key information of this page so that search engines can recognize it. Then let’s talk about how to use :
<head> <title>mate</title> <meta http-equiv="content-type" content="application/xhtml+xml; charset=UTF-8" /> <meta name="author" content="Erwin Aligam - styleshout.com" /> <meta name="description" content="Site Description Here" /> <meta name="keywords" content="keywords, here" /> <meta name="robots" content="index, follow, noarchive" /> <meta name="googlebot" content="noarchive" /> </head>
(Recommended tutorial: html introductory tutorial)
1. Use of attributes
This is a simple example. This tag is written in
will not be seen by users. This is based on your own needs to see whether you want these functions. The attributes of the tag mainly include http-equiv and name.http-equiv is like the header file of http. It can send some useful information to the browser to help better display the content you want. The value of the http-equiv attribute can include content-type and expires. , refresh and so on.
nameThis attribute is mainly used to describe web pages. The value of the name attribute can be: author, description, keywords, generator, etc.
2. Application of name attribute
The use of name can be seen in the above examples, such as keywords and description, the use of keywords and description, because according to the working principle of search engines, search engines will First, exclude robots from automatically retrieving the keywords and description in the page, and add them to their own database, and then sort the websites according to the density of the keywords, so these two attributes are very important
Note: The content of keywords must be Limit to 36 characters.
The content of description should be limited to 76 characters.
These two need to be used together.
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本篇文章带大家了解一下HTML(超文本标记语言),介绍一下HTML的本质,HTML文档的结构、HTML文档的基本标签和图像标签、列表、表格标签、媒体元素、表单,希望对大家有所帮助!

不算。html是一种用来告知浏览器如何组织页面的标记语言,而CSS是一种用来表现HTML或XML等文件样式的样式设计语言;html和css不具备很强的逻辑性和流程控制功能,缺乏灵活性,且html和css不能按照人类的设计对一件工作进行重复的循环,直至得到让人类满意的答案。

总结了一些web前端面试(笔试)题分享给大家,本篇文章就先给大家分享HTML部分的笔试题(附答案),大家可以自己做做,看看能答对几个!

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。

在html中,document是文档对象的意思,代表浏览器窗口的文档;document对象是window对象的子对象,所以可通过“window.document”属性对其进行访问,每个载入浏览器的HTML文档都会成为Document对象。

html5支持boolean值属性;boolean值属性指是属性值为true或者false的属性,如input元素中的disabled属性,不使用该属性表示值为flase,不禁用元素,使用该属性可以不设置属性值表示值为true,禁用元素。


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