XHTML和HTML类属性值可以以数字开头吗？ [英] Can XHTML and HTML class attributes value start with a number?

问题描述

XHTML和HTML类属性值是否可以以数字开头？ 它们必须是SGML名称它们必须开始（[A-Za-z]），后面跟随任意数量的字母，数字（[0-9]），连字符（ - ），下划线（_），冒号（： ）和句号（。）。

然而，以数字开头的类名称是由IE支持的。

编辑：meder指出你可以使用Unicode字符，它们似乎可以在所有浏览器中工作，我不知道它是否符合规范，但它确实似乎验证。
请参阅 http://css-tricks.com/unicode-class-names/ 和 http://snook.ca/archives/html_and_css/unicode_for_css_class_names

Can XHTML and HTML class attributes value start with a number?

解决方案

No. They have to be SGML names. They "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 (".").

However, class names that start with a number are supported by IE.

EDIT: meder pointed out that you can use Unicode characters and they seem to work in all browsers. I don't know if it complies with the specifications, but it does seem to validate. See http://css-tricks.com/unicode-class-names/ and http://snook.ca/archives/html_and_css/unicode_for_css_class_names

这篇关于XHTML和HTML类属性值可以以数字开头吗？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！