scriptlevel
The scriptlevel
global attribute sets the math-depth of a MathML element. It allows overriding rules from the user agent stylesheet that define automatic calculation of font-size within MathML formulas.
Example
html
<!-- math-depth defaults to 0 on the <math> root. -->
<math style="font-size: 64pt">
<msubsup>
<!-- math-depth and font-size remain unchanged on the base. -->
<mtext>BASE</mtext>
<!-- math-depth defaults to add(1) within the subscript, so it
is incremented by 1 and the font-size is scaled down once. -->
<mtext>SUBSCRIPT</mtext>
<!-- math-depth defaults to add(1) within the superscript too, but
the scriptlevel attribute tells to increment it by 2 instead,
so the font-size is actually scaled down twice. -->
<mtext scriptlevel="+2">SUPERSCRIPT</mtext>
</msubsup>
</math>
Syntax
html
<math scriptlevel="-1"> <!-- decrease math-depth by 1 -->
<math scriptlevel="+2"> <!-- increase math-depth by 2 -->
<math scriptlevel="0"> <!-- reset math-depth to 0 -->
Values
If <U>
is an unsigned integer (i.e. with prefix sign symbol removed) then the accepted values are:
<U>
-
Sets the
math-depth
to value<U>
. This will setfont-size
of the element to the same value as the one of elements at the specified depth. +<U>
-
Sets the
math-depth
to valueadd(<U>)
. This will scale downfont-size
on the element<U>
times. -<U>
-
Sets the
math-depth
to valueadd(-<U>)
. This will scale upfont-size
on the element<U>
times.
Specifications
Specification |
---|
MathML Core # dfn-scriptlevel |
Browser compatibility
BCD tables only load in the browser
See also
- All global attributes.
- The displaystyle global attribute.
font-size
math-depth
math-style