页面显示链接

http://validator.w3.org/check/referer

http://jigsaw.w3.org/css-validator/check/referer

http://www.contentquality.com/mynewtester/cynthia.exe?Url1=http://blog.guoshuang.com

实际URL

http://validator.w3.org/check?uri=http%3A%2F%2Fblog.guoshuang.com%2F

http://jigsaw.w3.org/css-validator/validator?uri=http://blog.guoshuang.com

http://www.contentquality.com/mynewtester/cynthia.exe?Url1=http://blog.guoshuang.com

CSS部分问题

本来以为这部分内容最容易通过验证，结果大跌眼镜，：（

border:1px solid #fff #666 #666 #fff;

不能通过验证？

border Too many values or values are not recognized : 1px solid #fff #666 #666 #fff

word-break doesn’t exist : break-all

Property overflow-y doesn’t exist : hidden

ie推荐了该属性到CSS3中，这个不通过也罢。

Same colors for color and background-color in two contexts a.ubblink:hover and a.ubblink:visited

这个倒是能理解，颜色一样就失去区别的意义了。

xhtml验证

DOCTYPE 都没有定义,错误海了去了。

DOCTYPE定义代码：

http://www.w3.org/QA/2002/04/valid-dtd-list.html

508验证

这个蛮有意思，我喜欢。

第一个问题最常见

All IMG elements are required to contain either the alt or the longdesc attribute.

All INPUT elements are required to contain the alt attribute or use a LABEL.

input也必须有alt或者label（进行说明）。

INPUT Element, of Type TEXT, found at Line: 76, Column: 719 contains a non-empty ‘value’ attribute. This is a practice referred to as “self-labeling.” Self-Labeling is argued to be accessible under Priority One or Section 508 guidelines/standards. We recommend using a Label as the Preferred method or the use of an ‘alt’ attribute to make this element accessible.

All OBJECT elements are required to contain element content.

object必须包含element元素

When EMBED Elements are used, the NOEMBED element is required in the document.

Web pages shall be designed so that all information conveyed with color is also available without color, for example from context or markup.

没颜色的时候也应该能够正常浏览。

Frames shall be titled with text that facilitates frame identification and navigation.

frame需要title说明一下

Documents shall be organized so they are readable without requiring an associated style sheet.

没有样式表的页面应该也是可以浏览的。（崩溃，：（）