JSFiddle - React, Tailwind, and code Playground
HTML
<video class=" + className"></video>
<ul>
<li><a href="https://teratail.com/questions/260701">jQuery - jQueryのセレクタに変数を使ってみたい。｜teratail</a></li>
</ul>JavaScript
'use strict';
console.log($("video[class*= + className]"));