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The MathML <merror> element is used to display contents as error messages. In Firefox this error message is rendered similar to the typical XML error message. Note that this error is not thrown when your MathML markup is wrong or not well-formed XML. You will still get an XML parsing error (in case of the XHTML notation of MathML), which has nothing to do with <merror>.

Attributes

class, id, style
Provided for use with stylesheets.
href
Used to set a hyperlink to a specified URI.
mathbackground
The background color. You can use #rgb, #rrggbb and HTML color names.
mathcolor
The text color and also the fraction line color. You can use #rgb, #rrggbb and HTML color names.

Examples

<math>

<merror>
  <mrow>
    <mtext> Division by zero: </mtext>
    <mfrac>
      <mn> 1 </mn>
      <mn> 0 </mn>
    </mfrac>
  </mrow>
</merror>

</math>

Specifications

Specification Status Comment
MathML 3.0
The definition of 'merror' in that specification.
Recommendation Current specification
MathML 2.0
The definition of 'merror' in that specification.
Recommendation Initial specification

Browser compatibility

 

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support No ?1 No No6
href No ?7 No No No
mathbackground No ?4 No No6
mathcolor No ?4 No No6
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support No No ?4 No Yes ?
href No No ?7 No No ?
mathbackground No No ?4 No No ?
mathcolor No No ?4 No No ?

 

Document Tags and Contributors

Contributors to this page: fscholz, Sheppy
Last updated by: lucian95,