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HTML / XHTML Standard Attributes
The attributes listed below are standard, and are supported by all HTML and XHTML tags, with a few exceptions.
Core Attributes
Not valid in base, head, html, meta, param, script, style, and title elements.
| Attribute |
Value |
Description |
| class |
classname |
Specifies a classname for an element |
| id |
id |
Specifies a unique id for an element |
| style |
style_definition |
Specifies an inline style for an element |
| title |
text |
Specifies extra information about an element |
Language Attributes
Not valid in base, br, frame, frameset, hr, iframe, param, and script elements.
| Attribute |
Value |
Description |
| dir |
ltr
rtl |
Specifies the text direction
for the content in an element |
| lang |
language_code |
Specifies a language code for the content in an element.
Language code reference |
| xml:lang |
language_code |
Specifies a language code for the content in an element, in
XHTML documents.
Language code reference |
Keyboard Attributes
| Attribute |
Value |
Description |
| accesskey |
character |
Specifies a keyboard shortcut to access an element |
| tabindex |
number |
Specifies the tab order of an element |
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