HTML 基本语法
文本标记语言，即HTML（Hypertext Markup Language），是用于描述网页文档的一种标记语言。
一个网页对应于一个HTML文件，HTML文件以.htm或.html为扩展名。可以使用任何能够生成TXT类型源文件的文本编辑来产生HTML文件。 超文本标记语言标准的HTML文件都具有一个基本的整体结构，即HTML文件的开头与结尾标志和HTML的头部与实体2大部分。有3个双标记符用于页面整体结构的确认。
HTML Basic Document
<html> <head> <title>Document name goes here</title> </head> <body> Visible text goes here </body> </html>
Text Elements
<p>This is a paragraph</p> <br> (line break) <hr> (horizontal rule) <pre>This text is preformatted</pre>
Logical Styles
<em>This text is emphasized</em> <strong>This text is strong</strong> <code>This is some computer code</code>
Physical Styles
<b>This text is bold</b> <i>This text is italic</i>
Links, Anchors, and Image Elements
<a href="http://www.example.com/">This is a Link</a> <a href="http://www.example.com/"><img src="URL" alt="Alternate Text"></a> <a href="mailto:webmaster@example.com">Send e-mail</a>A named anchor: <a name="tips">Useful Tips Section</a> <a href="#tips">Jump to the Useful Tips Section</a>
Unordered list
<ul> <li>First item</li> <li>Next item</li> </ul>
Ordered list
<ol> <li>First item</li> <li>Next item</li> </ol>
Definition list
<dl> <dt>First term</dt> <dd>Definition</dd> <dt>Next term</dt> <dd>Definition</dd> </dl>
Tables
<table border="1"> <tr> <th>someheader</th> <th>someheader</th> </tr> <tr> <td>sometext</td> <td>sometext</td> </tr> </table>
Frames
<frameset cols="25%,75%"> <frame src="page1.htm"> <frame src="page2.htm"> </frameset>
Forms
<form action="http://www.example.com/test.asp" method="post/get"> <input type="text" name="lastname" value="Nixon" size="30" maxlength="50"> <input type="password"> <input type="checkbox" checked="checked"> <input type="radio" checked="checked"> <input type="submit"> <input type="reset"> <input type="hidden"> <select> <option>Apples <option selected>Bananas <option>Cherries </select> <textarea name="Comment" rows="60" cols="20"></textarea> </form>
Entities
< is the same as < > is the same as > © is the same as ©
Other Elements
<!-- This is a comment --> <blockquote> Text quoted from some source. </blockquote> <address> Address 1<br> Address 2<br> City<br> </address>
