 |
您现在的位置： 圆点视线 >> 教程 >> 网页设计 >> html教程 >> 文章正文 |
|
|||
| HTML中DOCTYPE的定义及用法 | |||
作者：网络收集 文章来源：网络收集 点击数： 更新时间：2007-9-6 11:28:09  |
|||
|
|
||
| The <!DOCTYPE> declaration is the very first thing in your document, before the <html> tag. This tag tells the browser which HTML or XHTML specification the document uses. Note: The <!DOCTYPE> tag does not have an end tag! HTML HTML 4.01 specifies three document types: Strict, Transitional, and Frameset. HTML Strict DTD Use this when you want clean markup, free of presentational clutter. Use this together with Cascading Style Sheets (CSS): <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> HTML Transitional DTD The Transitional DTD includes presentation attributes and elements that W3C expects to move to a style sheet. Use this when you need to use HTML's presentational features because your readers don't have browsers that support Cascading Style Sheets (CSS): <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> Frameset DTD The Frameset DTD should be used for documents with frames. The Frameset DTD is equal to the Transitional DTD except for the frameset element replaces the body element: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" "http://www.w3.org/TR/html4/frameset.dtd"> XHTML XHTML 1.0 specifies three XML document types: Strict, Transitional, and Frameset. XHTML Strict DTD Use this DTD when you want clean markup, free of presentational clutter. Use this together with Cascading Style Sheets (CSS): <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> XHTML Transitional DTD Use this DTD when you need to use XHTML's presentational features because your readers don't have browsers that support Cascading Style Sheets (CSS): <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> XHTML Frameset DTD Use this DTD when you want to use frames! <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd"> To check that you have written a valid XHTML document with a correct DTD, you can link your XHTML page to an XHTML validator. |
||
| 【发表评论】【加入收藏】【告诉好友】【打印此文】【关闭窗口】 文章录入：Rainsion 责任编辑：Rainsion 【字体：小 大】 |
| |
 最新文章 |
| 相关文章 |
| HTML元素语义的分类 根据网页结构选择最合适的XHTML标签 学习网页制作了解一些相关的语言代码知识 XHTML代码头部Doctype文档类型声明必不可少 在XHTML和HTML中使用语言信息 学习网页设计时要注意HTML向XHTML转化 网页标题和网页Meta的一些写法和注意 网页的新颖效果 斜着滚动的marquee 对话框插件thickbox使用技巧 XHTML+CSS的目的和好处(WEB标准的目的和好处 |
 网友评论：（只显示最新10条。评论内容只代表网友观点，与本站立场无关！） |
| 发表评论： |
| 最 新 推 荐 |
| 百度主题推广 | |
| 最 新 热 门 |