Get pseudo class by JavaScript
JSで擬似クラス(::beforeや::after)の要素を取得する方法。
//index.html
<div class="pseudo"></div>
//style.css
.pseudo::after{
content "";
opacity: 0.8;
}
//app.js
let pseudoAfter= window.getComputedStyle($('.pseudo')[0], '::before');
console.log(pseudoAfter.style.opacity);
