用途
<sub> 定义下标文本。和 <sup> 元素定义上标文本的。
例子
<p>The coordinate of the
<var>i</var>
th point is (
<var>x
<sub>
<var>i</var>
</sub>
</var>,
<var>y
<sub>
<var>i</var>
</sub>
</var>)
. For example, the 10th point has coordinate (
<var>x
<sub>10</sub>
</var>,
<var>y
<sub>10</sub>
</var>).
</p>
执行结果
The coordinate of the ith point is (xi, yi). For example, the 10th point has coordinate (x10, y10).
<address> 标签 HTML5 与 HTML4.01 之间不存在差异。