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characters

HTML <sup> 元素定义了一个文本区域,出于排版的原因,与主要的文本相比,应该展示得更高并且更小。

内容类别

Flow content and phrasing content

允许的内容

Phrasing content

标记遗漏

没有,起始和结束标签都是强制性的。

允许的父级

任何可以包含 Phrasing content 的元素

允许ARIA角色

任何

DOM接口

HTMLElement

属性

这个元素仅仅包含全局属性。

使用说明

  • 这个元素应该只用于排版目的,也就是改变文本的位置会改变含义,例如在数学中(f4,也可以考虑使用 MathML 公式)或者在法语缩写中( Mlle,Mme 或者 Cie)。

  • 这个元素不能用于样式上的目的,比如产品名称 LaTeX 的样式,这时应该使用 CSS样式: vertical-align 属性的 super 值能实现相同效果。

例子

<p>This text is <sup>superscripted</sup></p>

结果

This text is superscripted

规范

Specification

Status

Comment

HTML Living StandardThe definition of '<sub> and <sup>' in that specification.

Living Standard


HTML5The definition of '<sub> and <sup>;' in that specification.

Recommendation


浏览器兼容性

Feature

Chrome

Edge

Firefox

Internet Explorer

Opera

Safari

Basic Support

(Yes)

(Yes)

1

(Yes)

(Yes)

(Yes)

Feature

Android

Chrome for Android

Edge mobile

Firefox for Android

IE mobile

Opera Android

iOS Safari

Basic Support

(Yes)

(Yes)

(Yes)

1

(Yes)

(Yes)

(Yes)

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