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HTML属性的长度问题_html/css_WEB-ITnose

WBOY
Release： 2016-06-24 11:53:49
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越来越多的同学喜欢把数据存放在html属性上，比如

<p data-info="{a:1,b:2}">xxx</p>
Copy after login

一堆JSON数据放在data-info里。存放的属性值有长度限制吗？如果有最大长度是多少？

 

分别从HTML4和HTML5的规范去查看。

HTML4

3.2.2节介绍Attribute，里面没有提到长度的限制。

 

SGML

HTML4来源于SGML，看看SGML有没有这方面的规定。

貌似最大是65536。

 

HTML5

3.2.3.1 Attributes 里也没有提到长度显示。

 

当然，用各浏览器测试下是最好的结论。

 

相关：

http://www.w3.org/TR/html401/intro/sgmltut.html#h-3.2.2

http://www.w3.org/TR/html401/sgml/sgmldecl.html

http://www.highdots.com/forums/html/length-html-attribute-175546.html

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HTML属性的长度问题
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