<mphantom>

Baseline 2023

Newly available

Since January 2023, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

<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

此元素接受全局 MathML 属性。

示例

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

规范

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

浏览器兼容性

BCD tables only load in the browser

参见