javascript - Why does Javascript pause when long pressing on an Android or iOS device?

Question

When I long press or scroll on the screen of an Android or iOS device, the Javascript running in the webview pauses. How can I keep js running, and additionally, why does js pause in this case?

Answer 1

这篇文章有一个类似的问题/答案，我相信这纯粹是一个性能优化，因为滚动需要浏览器重绘/绘制 DOM：这将占用大量资源。关于长按，这可能与浏览器等待了解下一步想要做什么有关，即选择要复制/粘贴的区域或触发浏览器上下文菜单。