<maction>

Attributes

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

actiontype

The action which specifies what happens for this element. Special behavior for the following values were implemented by some browsers:

• statusline: If there is a click on the expression or the reader moves the pointer over it, the message is sent to the browser's status line. The syntax is: <maction actiontype="statusline"> expression message </maction>.
• toggle: When there is a click on the subexpression, the rendering alternates the display of selected subexpressions. Therefore each click increments the selection value. The syntax is: <maction actiontype="toggle" selection="positive-integer" > expression1 expression2 expressionN </maction>.

selection

The child element currently visible, only taken into account for actiontype="toggle" or non-standard actiontype values. The default value is 1, which is the first child element.

Examples

The following example uses the "toggle" actiontype:

html,
body {
  height: 100%;
}

body {
  display: grid;
  place-content: center;
}

math {
  font-size: 1.5em;
}

maction {
  padding: 0.5em;
  cursor: pointer;
}

<p>Try clicking this formula several times:</p>
<math display="block">
  <maction actiontype="toggle">
    <mfrac>
      <mn>6</mn>
      <mn>8</mn>
    </mfrac>

    <mfrac>
      <mrow>
        <mn>3</mn>
        <mo>×</mo>
        <mn>2</mn>
      </mrow>
      <mrow>
        <mn>4</mn>
        <mo>×</mo>
        <mn>2</mn>
      </mrow>
    </mfrac>

    <mfrac>
      <mn>3</mn>
      <mn>4</mn>
    </mfrac>
  </maction>
</math>

Sample rendering:

Rendering in your browser:

Technical summary

Specifications

Browser compatibility