星號在XML屬性值

Question

我有一個XHTML文件，這一行：

<tr id="some-string-with-a-*"> 

，我得到驗證錯誤：

Syntax of value for attribute id of tr is not valid

我把它改成*，我仍然會得到相同的錯誤。
有什麼建議嗎？

Answer 1

不能使用星號：

ID and NAME tokens must begin with a letter ([A-Za-z]) and may be followed by any number of letters, digits ([0-9]), hyphens ("-"), underscores ("_"), colons (":"), and periods (".").

見XHTML specification的片段標識符部分：

Note that the collection of legal values in XML 1.0 Section 2.3, production 5 is much larger than that permitted to be used in the ID and NAME types defined in HTML 4. When defining fragment identifiers to be backward-compatible, only strings matching the pattern [A-Za-z][A-Za-z0-9:_.-]* should be used. See Section 6.2 of [HTML4] for more information.

需要注意的是，如果你不希望支持向後兼容性，有根據XML允許附加字符，但星號不在該列表中：

http://www.w3.org/TR/REC-xml/#NT-Name