MathML <merror> Tag

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The HTML5 MathML <merror> tag is an inbuilt element that wraps an expression in a box to make it visually prominent. This tag is commonly used to display error messages. However, it alone cannot visibly indicate errors or incorrect MathML markup. Instead, you may encounter an XML parsing error.

Attributes: The <merror> tag accepts the following attributes:

class|id|style: This attribute is used to define the styles for the child elements.
href: This attribute holds a hyperlink to a specified URL.
mathbackground: This attribute determines the background color of the math expressions.
mathcolor: This attribute specifies the color of the math expressions.

<!DOCTYPE html>
<html>
  <head>
    <title>HTML5 MathML merror tag</title>
  </head>
  <body style="text-align:center;">
    <h1 style="color:green">Propertutorials</h1>
    <h3>HTML5 MathML merror tag</h3>
    <math>
      <merror mathbackground="yellow">
        <mtext mathcolor="red"> Pythagoras Equation: </mtext>
        <mrow>
          <msup>
            <mi> x </mi>
            <mn>2 </mn>
          </msup>
          <mo>-</mo>
          <msup>
            <mi> y </mi>
            <mn>2 </mn>
          </msup>
        </mrow>
        <mo>=</mo>
        <msup>
          <mi> z </mi>
          <mn>2 </mn>
        </msup>
      </merror>
    </math>
    <p> This tag is use to display the error in any expression </p>
  </body>
</html>

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MathML <merror> Tag

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