Supported MathML by the Sanitizer

document.body.setHTML('<math><mtext>test</mtext></math>');
document.body.innerHTML.includes('<mtext') && alert('mtext')

document.body.setHTML('<math><mtr>test</mtr></math>');
document.body.innerHTML.includes('<mtr') && alert('mtr')

document.body.setHTML('<math><mn>test</mn></math>');
document.body.innerHTML.includes('<mn') && alert('mn')

document.body.setHTML('<math><msup>test</msup></math>');
document.body.innerHTML.includes('<msup') && alert('msup')

document.body.setHTML('<math><mprescripts>test</mprescripts></math>');
document.body.innerHTML.includes('<mprescripts') && alert('mprescripts')

document.body.setHTML('<math><mpadded>test</mpadded></math>');
document.body.innerHTML.includes('<mpadded') && alert('mpadded')

document.body.setHTML('<math><mo>test</mo></math>');
document.body.innerHTML.includes('<mo') && alert('mo')

document.body.setHTML('<math><munderover>test</munderover></math>');
document.body.innerHTML.includes('<munderover') && alert('munderover')

document.body.setHTML('<math><mfrac>test</mfrac></math>');
document.body.innerHTML.includes('<mfrac') && alert('mfrac')

document.body.setHTML('<math><msqrt>test</msqrt></math>');
document.body.innerHTML.includes('<msqrt') && alert('msqrt')

document.body.setHTML('<math><math>test</math></math>');
document.body.innerHTML.includes('<math') && alert('math')

document.body.setHTML('<math><ms>test</ms></math>');
document.body.innerHTML.includes('<ms') && alert('ms')

document.body.setHTML('<math><munder>test</munder></math>');
document.body.innerHTML.includes('<munder') && alert('munder')

document.body.setHTML('<math><mphantom>test</mphantom></math>');
document.body.innerHTML.includes('<mphantom') && alert('mphantom')

document.body.setHTML('<math><mtable>test</mtable></math>');
document.body.innerHTML.includes('<mtable') && alert('mtable')

document.body.setHTML('<math><mtd>test</mtd></math>');
document.body.innerHTML.includes('<mtd') && alert('mtd')

document.body.setHTML('<math><mstyle>test</mstyle></math>');
document.body.innerHTML.includes('<mstyle') && alert('mstyle')

document.body.setHTML('<math><mmultiscripts>test</mmultiscripts></math>');
document.body.innerHTML.includes('<mmultiscripts') && alert('mmultiscripts')

document.body.setHTML('<math><semantics>test</semantics></math>');
document.body.innerHTML.includes('<semantics') && alert('semantics')

document.body.setHTML('<math><msub>test</msub></math>');
document.body.innerHTML.includes('<msub') && alert('msub')