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<mphantom>

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨2023年1月⁩.

<mphantom> MathML 元素渲染为不可见内容,但仍保留尺寸(如高度、宽度和基线位置)。

属性

html

<math display="block">
 <mrow>
 <mi>x</mi>
 <mo>+</mo>
 <mphantom>
 <mi>y</mi>
 <mo>+</mo>
 </mphantom>
 <mi>z</mi>
 </mrow>
</math>

Specification
MathML Core # making-sub-expressions-invisible-mphantom

This page was last modified on ⁨2025年3月14日⁩ by MDN contributors.