MathMLElement

Baseline Widely available *

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨January 2023⁩.

* Some parts of this feature may have varying levels of support.

The MathMLElement interface represents any MathML element.

Instance properties

Also inherits properties from its parent, Element.

MathMLElement.attributeStyleMap Read only: A StylePropertyMap representing the declarations of the element's style attribute.
MathMLElement.autofocus: Whether the control should be focused when the page loads, or when a <dialog> or popover become shown.
MathMLElement.dataset Read only: A DOMStringMap object which provides a list of key/value pairs of named data attributes which correspond to custom data attributes attached to the element. These correspond to MathML's data-* global attributes.
MathMLElement.style: A CSSStyleDeclaration representing the declarations of the element's style attribute.
MathMLElement.tabIndex: The position of the element in the tabbing order.

This interface also inherits methods from its parent, Element.

MathMLElement.blur(): Removes keyboard focus from the currently focused element.
MathMLElement.focus(): Makes the element the current keyboard focus.

html

<math>
  <msqrt>
    <mi>x</mi>
  </msqrt>
</math>

document.querySelector("msqrt").constructor.name; // MathMLElement

Specification
MathML Core # dom-mathmlelement

This page was last modified on ⁨Oct 9, 2025⁩ by MDN contributors.