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HTML <sub> 标签


示例

下标文本

<p>此文本包含 <sub>下标</sub> 文本。</p>
亲自尝试 »

定义和用法

<sub> 标签定义下标文本。下标文本出现在正常文本下方半个字符的位置,有时会以较小的字体呈现。下标文本可用于化学式,例如 H2O。

提示: 使用 <sup> 标签来定义上标文本。


浏览器支持

元素
<sub>

全局属性

<sub> 标签还支持 HTML 中的全局属性.


事件属性

<sub> 标签还支持 HTML 中的事件属性.


相关页面

HTML 教程:HTML 文本格式化

HTML DOM 参考:下标对象


默认 CSS 设置

大多数浏览器将以以下默认值显示 <sub> 元素

示例

sub {
  vertical-align: sub;
  font-size: smaller;
}
亲自尝试 »


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