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May 17, 2016 am 09:09 AM

HTML5教程:HTML5的基础写法

对比一下XHTML 1.0 Transitional的规范，html5基本上没有XHTML 1.0 Transitional严格的要求，并且简化了很多东西。

•文档声明更简单了。

1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
2 <!--在HTML5中，这样写：--> 
3 <!DOCTYPE html>

•html标签上不需要声明命名空间。

1 <html xmlns="http://www.w3.org/1999/xhtml"> 
2 <!--在HTML5中，这样写：--> 
3 <html>

•字符集编码声明也简单了

1 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> 
2 <!--在HTML5中，这样写：--> 
3 <meta charset="UTF-8" />

•可以不用给css及javascript代码写type属性了

1 <script type="text/javascript"></script> 
2 <style type="text/css"></style> 
3 <!--在HTML5中，可以直接写：--> 
4 <script></script> 
5 <style></style>

•没有XHTML代码规范的要求

所有的标记都必须要有一个相应的结束标记；

所有标签的元素和属性的名字都必须使用小写；

所有的XML标记都必须合理嵌套；

所有的属性必须用引号”"括起来；

1 <p></p> 
2 <br> 
3 <INPUT TYPE="TEXT" /> 
4 <!--这些都不做严格要求-->

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