一个XHTML文档必须得有<!DOCTYPE>
XHTML文档主要由下面三个方面构成
DOCTYPE
Head
Body
基本的文档结构为:
<!DOCTYPE ...>
<html>
<head>
<title>... </title>
</head>
<body> ... </body>
</html>文档声明必须出现在XHTML文档的首行。
XHTML DTD所描述的XHTML标签是精确的,计算机易读性好的,语法和文理都合适的
当前的三类 XHTML 文档类型:
STRICT 严密型
TRANSITIONAL 过渡型
FRAMESET 框架型
严密型
<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">Use this when you want really clean markup, free of presentational clutter. Use this together with Cascading Style Sheets.
PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">Use this when you want really clean markup, free of presentational clutter. Use this together with Cascading Style Sheets.
XHTML 1.0 Frameset
<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">Use this when you want to use HTML Frames to partition the browser window into two or more frames.
XHTML DTD:xhtml文档申明2006-4-9 19:47:14 www.aspxuexi.com
<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">Use this when you want to use HTML Frames to partition the browser window into two or more frames.
XHTML DTD:xhtml文档申明2006-4-9 19:47:14 www.aspxuexi.com
<script src="http://pagead2.googlesyndication.com/pagead/show_ads.js" type="text/javascript">
</script>
XHTML 1.0 Transitional
<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">Use this when you need to take advantage of HTML''s presentational features and when you want to support browsers that don''t understand Cascading Style Sheets.
框架型
本文介绍了XHTML文档的三种主要类型:严密型、过渡型和框架型。详细解释了每种类型的用途及其文档声明的方式,并强调了文档声明必须出现在XHTML文档的首行。
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