Hyphen or Underscore @kaiye

9 Confusing Naming Conventions for Beginners • http://net.tutsplus.com/articles/general/9- confusing-naming-conventions-for- beginners/ • http://dayanjia.com/2010/10/9-confusing- naming-conventions-for-beginners-in-web- programming.html

StackOverflow • http://stackoverflow.com/questions/ 1686337/hyphens-or-underscores-in-css- and-html-identifiers

Underscores in class and ID Names • http://devedge-temp.mozilla.org/ viewsource/2001/css-underscores/

Oxford Dictionary • http://www.oxforddictionaries.com/page/ punctuationhyphen/ hyphen-;jsessionid=082070F581446958B28484 7E7564A28E • Hyphens are also used to stand for a common second element in all but the last word of a list, e.g.: • You may see a yield that is two-, three-, or fourfold.

VOA 816: underscore • http://www.51voa.com/ Voa_English_Learning/ Learn_A_Word_33898.html

HTML 属性编写规范 • 为了确保js的引用不容易出现错误，以及代码 工作的同⼀一性，属性名必须采用小写；属性 值必须由双引号包围；属性值当中避免使 用"-"号作为连接符而更改为"_"以防止人为遗 漏双引号的时候被当作两个变量相减；属性 值也尽可能使用小写（文件头部固定的属性 值等除外），以防止各人使用驼峰的风格不 ⼀一致；旧有单⼀一属性必须使用赋值形式出 现；img的dom节点必须包含alt图片内容说明 属性。

Hyphen strong point • easier to type • same with CSS property declare • avoid _hack and compatibility problem • semantization

Semantization • http://www.google.com/support/ webmasters/bin/answer.py?answer=76329

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W3C&WHATWG http://internet.solidot.org/article.pl? sid=10/05/15/054258

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HTML设计原理 http://my.opera.com/BB9z/blog/the-design-of-html5

Optional Closing Tags http://validator.w3.org/check?verbose=1&uri=http:// hikejun.com/tmp/test_optional_closing_tags.html

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• CSS DOC • Module Example • Framework Mindmap • …

Thanks