href

{{MathMLRef}} {{Non-standard_header}} 

The href global attribute creates a hyperlink on the MathML element pointing to the specified URL.

Example

The first equation links to the Wikipedia article about the mass-energy equivalence. The square root part of the second equation is a link to the SageMath calculation.

[!NOTE] You should avoid nesting MathML elements with the href attributes, just like {{htmlelement("a")}}  elements, as is will lead to user confusion and accessibility issues.

html,
body {
  height: 100%;
}

body {
  display: grid;
  place-items: center;
  font-size: 1.5rem;
}

<math
  display="block"
  href="https://en.wikipedia.org/wiki/Mass-energy_equivalence">
  <mrow>
    <mi>E</mi>
    <mo>=</mo>
    <mi>m</mi>
    <msup>
      <mi>c</mi>
      <mn>2</mn>
    </msup>
  </mrow>
</math>

<math display="block">
  <mi>c</mi>
  <mo>=</mo>
  <msqrt href="https://sagecell.sagemath.org/?z=eJwrLiwq0TCOM9I2iTPSBAAeqgPO">
    <msup>
      <mn>3</mn>
      <mn>2</mn>
    </msup>
    <mo>+</mo>
    <msup>
      <mn>4</mn>
      <mn>2</mn>
    </msup>
  </msqrt>
  <mo>=</mo>
  <mn>5</mn>
</math>

{{ EmbedLiveSample("Example", "", 150) }} 

Syntax

<math href="https://example.com/">

Values

• URL
  • : The URL to which the hyperlink points.

Specifications

The href attribute is not defined in any browser-oriented specification but you can find a description in MathML 4.

Browser compatibility

{{Compat}} 

See also

• All global attributes.