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The id attribute provides a document-wide unique identifier for an element. [ 7 ] [ 8 ] [ 9 ] 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.
The <article> element only includes the global HTML attributes such as contenteditable, id, and title. [2] However, pubdate, an optional boolean attribute of the <time> element, is often used in conjunction with <article>. If present, it indicates that the <time> element is the date the <article> was published.
As an origin, setting the attribute href, [26] creates a hyperlink; it can point to either another part of the document or another resource (e.g. a webpage) using an external URL. As a target, setting the name or id HTML attributes, allows the element to be linked from a Uniform Resource Locator (URL) via a fragment identifier. The two forms ...
The name attribute of the <a> element served the same purpose, but is now obsolete in favor of the id attribute, which can be applied to any element. [6] In all XML document types including XHTML fragments corresponding to an xml:id or similar id attributes follow the Name-syntax and begin with a letter, underscore, or colon. Notably they ...
In order to avoid the use of stale cache data, methods used to generate ETags should guarantee (as much as is practical) that each ETag is unique. However, an ETag-generation function could be judged to be "usable", if it can be proven (mathematically) that duplication of ETags would be "acceptably rare", even if it could or would occur.
In cases where the content attribute's value is a URL, many authors decide to use a link element with a proper value for its rel attribute as well. [ 27 ] For a comparison on when it is best to use HTTP-headers, meta-elements, or attributes in the case of language specification: see here .
mailto is a Uniform Resource Identifier (URI) scheme for email addresses.It is used to produce hyperlinks on websites that allow users to send an email to a specific address directly from an HTML document, without having to copy it and entering it into an email client.
MDN Web Docs, previously Mozilla Developer Network and formerly Mozilla Developer Center, is a documentation repository and learning resource for web developers. It was started by Mozilla in 2005 [ 2 ] as a unified place for documentation about open web standards, Mozilla's own projects, and developer guides.