This calls for composing much more JavaScript. The separation of concerns breaks down in a short time after you use JavaScript for structure. It truly is never ever just a quick 1 liner.知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。@weasel5i2 and @Obsidian. I would advocate the use of SVG rathe