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This section gives examples of diagnostics generated by the markup validation service, and suggests possible fixes. Diagnostics are by line and column of the generated HTML for the page. It may be helpful to obtain the HTML in order to understand the diagnostic. For example, if you using the Firefox browser, you can type control-U to see the HTML.
HTML attributes are special words used inside the opening tag to control the element's behaviour. It is a piece of markup language used to adjust the behavior or display of an HTML element.HTML attributes are a modifier of a HTML element type. An attribute either modifies the default functionality of an element type or provides functionality to ...
Some HTML elements are defined as empty elements and take the form < tag attribute1 = "value1" attribute2 = "value2" >. Empty elements may enclose no content, for instance, the < br > tag or the inline < img > tag. The name of an HTML element is the name used in the tags. The end tag's name is preceded by a slash character /. If a tag has no ...
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.
HTML5 cannot provide animation within web pages. Additional JavaScript or CSS3 is necessary for animating HTML elements. Animation is also possible using JavaScript and HTML 4 [123] [failed verification], and within SVG elements through SMIL, although browser support of the latter remains uneven as of 2011.
year Number specifying the year to be displayed. This can be negative and also can be in the format "n BC" to display BC dates or "AD n" as an alternative to a positive number. If not specified, the current year is used. footnotes Any footnotes to be placed at the bottom of the sidebar. gregcal
This template returns the number of the Gregorian calendar century for current year in the current Christian era (UTC time, as set on the Wikipedia server). This calendar century includes the final secular year.
In XML, an attribute is a markup construct consisting of a name/value pair that exists within a start-tag or empty-element tag. Markup languages, such as HTML and XML , use attributes to describe data and the formatting of data.