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→Common attributes: "semantic [...] or [...] presentation" (understood as XOR) is a false dichotomy; the traditional use of classes in CSS selectors is just hooking onto the annotations that the class list adds to the semantic model... |
→Common attributes: fix gibberish ("the '''<code>style</code>''' non-attributal codes presentational properties to a particular element") and revise comments about practices to be similarly less offputting |
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* The '''<code>id</code>''' attribute provides a document-wide unique identifier for an element.<ref>However, multiple identifiers may apply to the same element; in particular an element may be inside another element, each having an identifier.</ref><ref>{{Cite web|url=https://www.w3schools.com/html/html_id.asp|title=HTML id|website=www.w3schools.com|access-date=2020-04-27}}</ref><ref>{{Cite web|url=https://www.w3schools.com/tags/att_global_id.asp|title=HTML Global id Attribute|website=www.w3schools.com|access-date=2020-04-27}}</ref> This can be used as [[CSS selector]] to provide presentational properties, by browsers to focus attention on the specific element, or by scripts to alter the contents or presentation of an element. Appended to the URL of the page, the URL directly targets the specific element within the document, typically a sub-section of the page. For example, the ID "Attributes" in <code><nowiki>http://en.wikipedia.org/wiki/HTML#Attributes</nowiki></code> (to refer to the section "Attributes" in the "HTML" page).
* The '''<code>class</code>''' attribute provides a way of classifying similar elements. Multiple class names can be added by separating them with spaces.<ref>{{Cite web|url=https://www.w3schools.com/html/html_classes.asp|title=HTML Classes|website=www.w3schools.com|access-date=2020-04-27}}</ref><ref>{{Cite web|url=https://www.w3schools.com/tags/att_global_class.asp|title=HTML Global class Attribute|website=www.w3schools.com|access-date=2020-04-27}}</ref> Semantically, for example, classes are used in [[microformat]]s. Additionally authors of style sheets can construct [[CSS selector|selectors]] that match elements by class for styling purposes. For example, an HTML document might use the designation <code>class="notation"</code> to indicate that all elements with this class value are subordinate to the main text of the document. Such elements might be gathered together as footnotes on a page—instead of appearing in the place suggested by their position within the HTML source. The style sheet author might also define a rule with the <code>.notation</code> selector and define the property <code>font-size: small;</code>.
* An author may use the '''<code>style</code>'''
* The '''<code>title</code>''' attribute is used to attach subtextual explanation to an element. In most browsers this attribute is displayed as what is often referred to as a [[tooltip]].
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