XHTML 属性

XHTML tags can have attributes. The special attributes for each tag are listed under each tag description. The attributes listed here are the core and language attributes that are standard for all tags (with a few exceptions).
XHTML可含有属性. 各标签所特有的属性都在下面标签的描述中. 这里所罗列的都是所有标签的核心和语言属性（个别除外）

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Core Attributes
核心属性

Not valid in base, head, html, meta, param, script, style, and title elements.
在 base, head, html, meta, param, script, style, 和 title元素中无效

Attribute 属性	Value 值	Description 描述
class	class_rule or style_rule	The class of the element 元素类别
id	id_name	A unique id for the element 唯一ID
style	style_definition	An inline style definition 内样式
title	tooltip_text	A text to display in a tool tip 提示

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Language Attributes
语言属性

Not valid in base, br, frame, frameset, hr, iframe, param, and script elements.
在base, br, frame, frameset, hr, iframe, param, 和 script中无效

Attribute 属性	Value 值	Description 描述
dir	ltr | rtl	Sets the text direction 设置文序
lang	language_code	Sets the language code 语言代码

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Keyboard Attributes
键盘属性

Attribute 属性	Value 值	Description 描述
accesskey	character	Sets a keyboard shortcut to access an element 设置键盘快捷访问
tabindex	number	Sets the tab order of an element 设定元素的定位键命令