Hyperlink <a> tag in HTML-HTML Tutorial-php.cn

墨辰丷

Release： 2018-05-16 10:53:29

Original

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<!DOCTYPE html">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>

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Hyperlink tag Commonly used attributes of a tag:
href: used to specify the resource of the link
target: Set the target of opening a new resource. _Blank Open a new resource in a separate window _self Open a new resource in the current window

file: file protocol (file protocol) This protocol is mainly used to search for resource files on the local machine.

Format:
file:\\\f:\Beauty\1.jpg

Principle of a tag:
1. If the href attribute value of the a tag starts with http, then the browser will immediately start the http interpreter to interpret the URL. First
will find a hosts file on the local machine. If it is in the hosts file If there is no corresponding host for the domain name, the browser will go to the corresponding
dns server to find the host number corresponding to the domain name. If the corresponding host is found, the request will be sent to the corresponding host.

2. If the href attribute value of the a tag does not start with any protocol, then the browser will start the file protocol interpreter to interpret the resource path.

3. If the href attribute value of the a tag does not start with http, and some other protocols, then the browser will go back to our local registration
table to find out whether there is any processing for this If there is an application for this protocol, then start the application immediately to process the protocol.

Mail protocol: mailTo
Thunder protocol: thunder

Function of hyperlink tag:
1. Can be used to link resources .
2. Anchor point position.
1. First write an anchor point. The format of the anchor point: data
2. Use the herf attribute of the a tag to connect to the anchor point. href="#name of anchor"

<body>
<a href="www.baidu.com">百度</a>
    <a  target="_blank" href="2常用的标签.html">带你去看1.html</a><br/>
    如果有需要请发送邮件至：<a href="mailTo:123456@qq.com">123456@qq.com</a><br/>
    <a href="thunder://abc/aa一个人的武林.avi">一个人的武林(高清枪版).avi</a>
    <a name="top">顶部</a> <!--锚点 -->
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   <a href="#top">回到顶部</a> 
    
</body>
</html>

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