如何使用纯 JS 使 dragImage 不透明？

Question

How can I make a dragImage opaque with pure JS? My code doesn't work for some reason https://stackblitz.com/edit/js-azetx8?file=index.js

Answer 1

Try to create a drag image earlier

const dragImage = new Image();
dragImage.src = button.src;
dragImage.style.opacity = 1.0;