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Is class a legal attribute of the HTML element?
<html class="...">
My Oracle ADF application does this — why?
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Class attributes are variables of a class that are shared between all of its instances. They differ from instance attributes in that instance attributes are owned by one specific instance of the class only, and are not shared between instances.
Class in html:The class attribute can be used on any HTML element. The class name can be used by CSS and JavaScript to perform certain tasks for elements with the specified class name.
The HTML class attribute is used to specify a single or multiple class names for an HTML element. The class name can be used by CSS and JavaScript to do some tasks for HTML elements.
HTML attributes are generally classified as required attributes, optional attributes, standard attributes, and event attributes: Usually the required and optional attributes modify specific HTML elements.
It is not valid in HTML 4:
<!ENTITY % html.content "HEAD, BODY">
<!ELEMENT HTML O O (%html.content;) -- document root element -->
<!ATTLIST HTML
%i18n; -- lang, dir --
>
It is not valid in XHTML 1.0:
<!ELEMENT html (head, body)>
<!ATTLIST html
%i18n;
id ID #IMPLIED
xmlns %URI; #FIXED 'http://www.w3.org/1999/xhtml'
>
It is valid in HTML 5:
The following attributes are common to and may be specified on all HTML elements (even those not defined in this specification):
- ...
- class
- ...
My Oracle ADF application does this - wounder why
Presumably to apply style or JS from a shared external file to specific pages.
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