<munderover> - MathML 编辑

The MathML <munderover> element is used to attach accents or limits both under and over an expression.

It uses the following syntax: <munderover> base underscript overscript </munderover>

Attributes

accent

If true, the overscript is an accent, which is drawn closer to the base expression.
If false (default value), the overscript is a limit over the base expression.

accentunder

If true, the underscript is an accent, which is drawn closer to the base expression.
If false (default value), the underscript is a limit under the base expression.

align

The alignment of both underscript and overscript. Possible values are: left, center, and right.
This attribute is deprecated and will be removed in the future. Use CSS text-align instead.

class, id, style

Provided for use with stylesheets.

displaystyle

A Boolean value specifying whether more vertical space is used for displayed equations or, if set to false, a more compact layout is used to display formulas. The main effect is that larger versions of operators are displayed, when displaystyle is set to true. See also largeop and movablelimits on <mo>.

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. You can use #rgb, #rrggbb and HTML color names.

Examples

Sample rendering:

Rendering in your browser: $\underset{0}{\overset{\infty }{\int }}$

<math displaystyle="true">

  <munderover >
    <mo> &#x222B; <!--INTEGRAL--> </mo>
    <mn> 0 </mn>
    <mi> &#x221E; <!--INFINITY--> </mi>
  </munderover>

</math>

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• <munder> (Underscript)
• <mover> (Overscript)