The <sup> tag defines superscript text. Superscript text appears half a character above the normal line, and is sometimes rendered in a smaller font. Superscript text can be used for footnotes, like WWW [1]. Tip: Use the <sub> tag to define subscript text.

HTML <sup> 元素 定义仅出于排版目的而显示为上标的行内文本。 上标通常以较小的文本在高出基线的位置呈现。 该元素仅包含 全局属性。 <sup> 元素应该只用于排版目的，也就是改变文本的位置以符合印刷习惯或标准，而不能仅用于呈现或外观的目的。 例如，要为企业或产品的 字体商标 添加抬高基线的样式，应该使用 CSS（很可能是 vertical-align）而不是 <sup>。 可以使用 vertical-align: super 或者 vertical-align: 50% 来将基线上移 50%。 适当的 <sup> 用例包括（但 …

2025年3月13日 · The <sup> HTML element specifies inline text which is to be displayed as superscript for solely typographical reasons. Superscripts are usually rendered with a raised baseline using smaller text.

How to easily type superscript & subscript numbers (¹ ₂ ³ ₄) using Windows Alt codes. Or click any superscript or subscript number to copy and paste into your document.

2025年1月14日 · In HTML, the <sub> tag is used for subscript, making text appear slightly below the normal line, while the <sup> tag is used for superscript, positioning text slightly above the normal line. The <sub> tag displays text slightly below the regular text baseline. It …

2025年1月14日 · Superscript is a text formatting style that raises characters above the normal line, commonly used for exponents, chemical isotopes, and ordinal numbers, and can be implemented in HTML using the <sup> tag.

Superscript text is generally used for mathematics and chemical formulas. For example, 1. Usage in Mathematical Formula. Browser Output. 2. Usage in Chemical Formula. Browser Output. The HTML and tags are used to implement superscript and subscript. In this tutorial, we will learn about them with the help of examples.

You can use the  tag to create superscript text and  to create su-script text. Or you can use the codes below. These codes allow fractions to be represented with typographically smaller numerators and denominators, but they can be replaced by other ways of typing a fraction (e.g. "1/2").

2024年11月20日 · Elevate your text to new heights with the HTML sup tag—a powerful element for adding superscript to characters or numbers. Learn how sup enhances readability and precision, perfect for footnotes, mathematical notations, and more.