模板:Var/doc

[清除緩存]

這是文件頁面，它應該被放置到Template:Var，檢視Template:Documentation以取得更多資訊。

Usage

This template is to help facilitate the displaying of variable names (in mathematics, computer source code, wikimarkup in template documentation, metasyntactic variables, etc.) with the semantically correct ‌^[var] tags, which also renders the variable in italics, as is customary. This method is preferred to simply italicizing for many reasons, including accessibility, separation of presentation and content, semantic Web, and metadata; In XHTML and HTML, the ‌^[var] element has semantic meaning, while simple italicization does not. This template provides a tiny hint of kerning to compensate for the italicization and enhance readability.

"Variable" in this sense may include arbitrary or unknown names or terms, examples of human input, arithmetical variables in equations, etc. This template (and the underlying XHTML) are generally Template:Em used if MediaWiki's ‌^[math] tags (or any other stand-alone mathematical markup) are being used.

Examples

Example

{{var|username}}

outputs the following HTML:

‌^[var]

which renders as:

username

Note that on the screen or in print, this renders as simple italicization, as does ''username'' (using pairs of apostrophes) or ‌^[i] (using HTML), yet it carries more semantic meaning than either of these methods.

At times, you may wish to use a serif font. This is especially true when attempting to render single-letter variables like "I" (upper-case "i") and "l" (lower-case "L"), since they are nearly indistinguishable (if at all). In such situations, use the {{varserif}} template instead of Template:Tnull, to make them more distinguishable, like these serif examples: Template:Varserif, Template:Varserif.

More examples

TemplateData

Marks text as an HTML variable

模板參數

參數		描述	類型	狀態
variable	1	沒有描述	行	必填
class	class	沒有描述	字串	選填
ID	id	沒有描述	字串	選填
CSS style	style	沒有描述	字串	選填
language	lang	沒有描述 範例 c++	字串	選填
HTML title (hovertext)	title	沒有描述	字串	選填

See also

• {{mvar}} which makes the argument italic and formats as mathematics
• {{math}} which formats its argument as mathematics
• {{bigmath}}, the same as {{math}} but makes it bigger