JSFiddle - React, Tailwind, and code Playground
HTML
<div class="a">A</div>
<div class="b">B</div>
<div class="c">C</div>
JavaScript
$('div:not(.a,.b)').empty()
<div class="a">A</div>
<div class="b">B</div>
<div class="c">C</div>
$('div:not(.a,.b)').empty()