<merror>

Baseline 2023

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

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The <merror> MathML element is used to display contents as error messages. The intent of this element is to provide a standard way for programs that generate MathML from other input to report syntax errors.

Attributes

This element accepts the global MathML attributes.

Examples

In the following example, <merror> is used to indicate a parsing error for some LaTeX-like input:

html

<math display="block">
  <mfrac>
    <merror>
      <mtext>Syntax error: \frac{1}</mtext>
    </merror>
    <mn>3</mn>
  </mfrac>
</math>

Technical summary

Implicit ARIA role	None

Specifications

Specification
MathML Core # error-message-merror

Browser compatibility

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