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Definition

The  HTML element is used to represent superscript text within a line of text. It is commonly used to display mathematical exponents, footnotes, or any content that needs to be placed above the normal text baseline.

Here’s an example of how to use the  element:

<p>E = mc<sup>2</sup></p>

In this example, the number “2” is wrapped within the  element. When rendered, the superscript text will appear slightly smaller and positioned above the baseline of the surrounding text, indicating that it represents the exponent in the famous equation E = mc².

The  element can also be used for other purposes, such as displaying footnotes:

<p>This is an example sentence.<sup>[<sub>1</sub>]</sup></p>

In this case, the  element is used to create a superscript footnote marker, typically indicating that a corresponding footnote exists at the bottom of the page. The  element is nested within the  element to create a subscript effect within the superscript.

It’s important to note that the  element is primarily used for styling purposes and does not convey any specific semantic meaning. If you require semantic meaning, it is recommended to use more appropriate elements, such as  for subscript text or <figure> and <figcaption> for detailed explanations or descriptions.