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xhtml与html的区别_html/css_WEB-ITnose

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Jun 24, 2016 am 11:22 AM

　　可扩展超文本标记语言XHTML（eXtensible HyperText Markup Language），是HTML 4.01的第一个修订版本，是「3种HTML4文件根据XML1.0标准重组」而成的。也就是说是，XHTML是HTML 4.01和XML1.0的杂交。

　　由于XHTML1.0是基于HTML4.01的，并没有引入任何新标签或属性（XHTML可以看作是HTML的一个子集），表现方式与超文本标记语言HTML类似，只是语法上更加严格，几乎所有的网页浏览器在正确解析HTML的同时，可兼容XHTML。

　　如：XHTML中所有的标签必须小写，所有标签必须闭合，每一个属性都必须使用引号包住。
要写成
，不能写为
（同hr）；使用了

之后必须有一个

以结束段落。

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