调试问题：使用 jQuery 检测我的重点在哪里？

Question

Forcing focus() on an element is easy, but after having debug issues, I realize trying to determine where is my focus gone is a lot harder. The thing is I'm generating a modal window using jq.UI, and from time to time, while focus is supposed to be set on first input of the form included in the modal, cursor just disappears, to never show again unless I reload the page.

Is there a straightforward way to detect where my focus/cursor is?

Answer 1

您可以通过检查document.activeElement来查看它所在的元素，例如：

alert(document.activeElement.innerHTML); //see the content to aid in IDing it

Answer 2

我不确定焦点事件是否冒泡，但如果冒泡，您可以尝试以下操作：

jQuery('body').focus(function(e){ console.log(e.target); })