检测细节元素的打开或关闭 [英] Detecting the opening or closing of a details element

问题描述

如何检测在Java中打开或关闭详细信息元素的时间？除了将侦听器附加到click函数并检查open属性是否已设置之外。

How can I detect when a details element is opened or closed in Javascript? Other than attaching a listener to the click function and checking if the open attribute is set or not.

推荐答案

由于此问题仍被否决，因此我无法删除它，因为它是公认的答案，我将有关最新解决方案，请参阅@Daniel Herr的帖子。

Since this is continuing to be voted down, and I can't remove it since it's the accepted answer, I'll refer to @Daniel Herr's post as a more up-to-date solution.

旧答案：

<details id="element">
   <p>Details</p>
</details>

<script>
   var isOpen = ($("#element").attr("open") == "open");

   alert ("Open = " + isOpen);
</script>

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