blocks|key|803185|text|不没有。您可以检查confirm命令的返回值是否确实是true或false，但您无法直观地检查那里是否存在。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|803186|这些东西是浏览器的一部分，而不是DOM的一部分。我敢肯定，有一个肮脏的黑客是有效的IE，因为它是一个私生子的windows操作系统。|803187|entityMap^0|9|7|R|4|W|5|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Q|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|R|8|@]|D|@]|E|$]]]|I|$]]

No there is not. You can check that the return value of a <code>confirm</code> command is indeed <code>true</code> or <code>false</code> but you cant check whether there visually there.

These things are part of the browser not part of the DOM. I'm sure there's a dirty hack that works for IE because it's a bastardized child of the windows OS.

blocks|key|803239|text|确认框和警告框正在阻止事件-在显示这些事件时，Javascript代码会暂停执行。所以没有-据我所知，你不能检测到当前是否正在显示。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|803240|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Confirm and alert boxes are blocking events - Javascript code execution is halted while these are displayed. So no - you can not detect if one is currently being displayed, as far as I know.

blocks|key|1018088|text|如果您想要检测这些是否被阻止。您必须自己处理要显示的消息，但要覆盖本机的alert/confirm。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1018089|window.nativeAlert+=+window.alert;
window.alert+=+function+(message)+{
var+timeBefore+=+new+Date();
var+confirmBool+=+nativeAlert(message);
var+timeAfter+=+new+Date();
if+((timeAfter+-+timeBefore)+<+350)+{
++++MySpecialDialog("You+have+alerts+turned+off,+turn+them+back+on+or+die!!!");
++}
}

window.nativeConfirm+=+window.confirm;
window.confirm+=+function+(message)+{
var+timeBefore+=+new+Date();
var+confirmBool+=+nativeConfirm(message);
var+timeAfter+=+new+Date();
if+((timeAfter+-+timeBefore)+<+350)+{
++++MySpecialDialog("You+have+alerts+turned+off,+turn+them+back+on+or+die!!!");
}
+return+confirmBool;
}|code-block|syntax|javascript|1018090|显然，我已经将时间设置为3.5毫秒。但经过一些测试后，我们只能在大约5毫秒内单击或关闭对话框|1018091|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

If you want to detect if these are being blocked. You will have to do your own thing with the message you will be dispalying but override the native alert/confirm.

<pre><code>window.nativeAlert = window.alert;
window.alert = function (message) {
var timeBefore = new Date();
var confirmBool = nativeAlert(message);
var timeAfter = new Date();
if ((timeAfter - timeBefore) &lt; 350) {
 MySpecialDialog("You have alerts turned off, turn them back on or die!!!");
 }
}

window.nativeConfirm = window.confirm;
window.confirm = function (message) {
var timeBefore = new Date();
var confirmBool = nativeConfirm(message);
var timeAfter = new Date();
if ((timeAfter - timeBefore) &lt; 350) {
 MySpecialDialog("You have alerts turned off, turn them back on or die!!!");
}
 return confirmBool;
}
</code></pre>

Obviously I have set the time to 3.5 milliseconds. But after some testing we were only able to click or close the dialogs in about 5 milliseconds plus

blocks|key|1018167|text|为了补充@user113716的答案，你可以依靠时间。我假设如果确认对话框花费的时间少于200毫秒，它就会被浏览器阻止。下面，如果确认对话框被阻止，我返回true+(默认情况下，它返回false，代码在TypeScript中)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1018168|++++let+oldConfirm+=+window.confirm;
++++window.confirm+=+(msg)+=>+{
++++++++let+time+=+new+Date().getTime();
++++++++let+conf+=+oldConfirm(msg);

++++++++return+new+Date().getTime()+-+time+>+200+?+conf+:+true;
++++}|code-block|syntax|javascript|1018169|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

To add to @user113716's answer you can rely on time. I assume that if confirm dialog took less than 200 ms, it is blocked by browser. Below I return true if confirm dialog is blocked (by default it returns false, the code is in TypeScript).

<pre><code> let oldConfirm = window.confirm;
 window.confirm = (msg) =&gt; {
 let time = new Date().getTime();
 let conf = oldConfirm(msg);

 return new Date().getTime() - time &gt; 200 ? conf : true;
 }
</code></pre>

Is there a way using JavaScript or jQuery to detect if a confirm or alert box is being displayed?

Detect if an alert or confirm is displayed on a page

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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有没有一种方法可以使用JavaScript或jQuery来检测是否显示了确认或警告框？

问检测页面上是否显示警报或确认
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