<msub>

Baseline 2023

Newly available

Since January 2023, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

The <msub> MathML element is used to attach a subscript to an expression.

It uses the following syntax: <msub> base subscript </msub>.

Attributes

This element's attributes include the global MathML attributes as well as the following deprecated attribute:

subscriptshift

A <length-percentage> indicating the minimum amount to shift the baseline of the subscript down.

Note: For the subscriptshift attribute, some browsers may also accept legacy MathML lengths.

Examples

html
<math display="block">
  <msub>
    <mi>X</mi>
    <mn>1</mn>
  </msub>
</math>

Technical summary

Implicit ARIA role None

Specifications

Specification
MathML Core
# subscripts-and-superscripts-msub-msup-msubsup

Browser compatibility

BCD tables only load in the browser

See also