firefox都要装这个插件Html Validator,帮助你熟悉html规范。
https://addons.mozilla.org/de/firefox/addon/html-validator/
https://addons.mozilla.org/de/firefox/addon/html-validator/
本文转自 holy2009 51CTO博客,原文链接:http://blog.51cto.com/holy2010/505187