<var>

HTML Variable元素（<var>）表示数学表达式或编程上下文中的变量名称。尽管该行为取决于浏览器，但通常使用当前字体的斜体形式显示。

概述

<var> 标签表示变量的名称，或者由用户提供的值。

允许内容	Phrasing content
标签闭合	Both start and end tags are required
允许的父级元素	Any element that accepts phrasing content.
规范元素	HTML, "The `var` element"

DOM 接口

本元素支持 HTMLElement 接口

提示: Gecko 1.9.2 开始, Firefox支持本元素使用 HTMLSpanElement 接口。

默认样式

var {
  font-style: italic;
}

Overriding the default style

BCD tables only load in the browser

<p> A simple equation: <var>x</var> = <var>y</var> + 2 </p>

A simple equation: x = y + 2

The output:

Using CSS, you can override the default style for the <var> element. In this example, variable names are rendered using bold Courier if it's available, otherwise it falls back to the default monospace font.

CSS

var {
  font: bold 15px "Courier", "Courier New", monospace;
}

HTML

<p>The variables <var>minSpeed</var> and <var>maxSpeed</var> control
   the minimum and maximum speed of the apparatus in revolutions
   per minute (RPM).</p>

This HTML uses <var> to enclose the names of two variables.

Result

Specification	Status	Comment
HTML Living Standard <var>	Living Standard
HTML5 <var>	Recommendation

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.