blocks|key|375574|text|我发现有些浏览器在某些情况下会将window.opener设置为window。这是我现在使用的最可靠的弹出检查。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|375575|if+(window.opener+&&+window.opener+!==+window)+{
++//+you+are+in+a+popup
}|code-block|syntax|javascript|375576|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|$]]

I've found that some browsers will set window.opener to window in certain cases. This is the most reliable popup check that I am using right now.

<pre><code>if (window.opener &amp;&amp; window.opener !== window) {
 // you are in a popup
}
</code></pre>

blocks|key|375408|text|当我在Chrome、火狐、Safari和IE8上测试时，下面的方法对我很有效。它适用于使用window.open()或target=_blank创建的窗口。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|375409|if+(window.opener)+{
++++alert('inside+a+pop-up+window+or+target=_blank+window');
}+else+if+(window.top+!==+window.self)+{
++++alert('inside+an+iframe');
}+else+{
++++alert('this+is+a+top+level+window');
}|code-block|syntax|javascript|375410|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|$]]

The following worked for me when testing in Chrome, Firefox, Safari, and IE8. It worked for a window created useing window.open() or target=_blank.

<pre><code>if (window.opener) {
 alert('inside a pop-up window or target=_blank window');
} else if (window.top !== window.self) {
 alert('inside an iframe');
} else {
 alert('this is a top level window');
}
</code></pre>

blocks|key|375334|text|window.locationbar.visible不一定只用于弹出窗口，但可以帮助检测用户是否可以通过地址栏手动更改位置...|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|375335|entityMap^0|0|Q|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

<code>window.locationbar.visible</code> not necessarily only for a popup, but can help detecting if the user can change the location manually via location bar...

blocks|key|591515|text|我使用此代码来确定弹出窗口|type|unstyled|depth|inlineStyleRanges|entityRanges|data|591516|(window.opener+&&+window.opener+!==+window+&&+!window.menubar.visible)|code-block|syntax|javascript|591517|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|$]]

I use this code to determine a popup window

<pre><code>(window.opener &amp;&amp; window.opener !== window &amp;&amp; !window.menubar.visible)
</code></pre>

blocks|key|375201|text|如果窗口是弹出窗口或子框，则以下语句将为真：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|375202|+window.parent+!=+window|code-block|syntax|javascript|375203|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|$]]

The following statement will be true if window is a popup window or subframe:

<pre><code> window.parent != window
</code></pre>

blocks|key|591318|text|为什么不直接检查开头符是否未定义？弹出式窗口有一个开启器，而普通页面没有。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|591319|if+(window.opener+!=+null)+|code-block|syntax|javascript|591320|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|$]]

Why not just check if the opener is NOT undefined? a popup has an opener while a regular page hasn't.

<pre><code>if (window.opener != null) 
</code></pre>

blocks|key|591043|text|这不是一个可靠的触发方法，但通常使用window.open()的弹出窗口不会指向新的URL，因此两个窗口将具有相同的href。因此，在许多情况下：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|591044|window.location.href+==+window.opener.location.href|code-block|syntax|javascript|591045|对于弹出窗口将为true。所以你可以这样做：|591046|var+isPopup+=+(window.location.href+==+window.opener.location.href);|591047|就像我说的，这在我有限的测试中有效，所以可能会有一些反馈表明这是不可靠的。|591048|entityMap^0|I|D|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|Y|8|@]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|R|$]]

This is not a sure fire method, but typically a popup using <code>window.open()</code> does not direct to a new URL, so both windows will have the same href. Therefore, in many cases:

<pre><code>window.location.href == window.opener.location.href
</code></pre>

will be true for a popup. So you could do:

<pre><code>var isPopup = (window.location.href == window.opener.location.href);
</code></pre>

Like I said, this works in my limited tests, so there may be some feedback that shows where this won't be reliable.

blocks|key|591270|text|最好的方法是检查窗口宽度，然后尝试以像素为单位调整窗口宽度，然后检查当前宽度是否等于调整大小之前的宽度|type|unstyled|depth|inlineStyleRanges|entityRanges|data|591271|换句话说，如果你成功地调整了窗口的大小，你很可能是在一个弹出窗口中。|591272|祝好运。|591273|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

The best way, is simply to check the window width, then try to resize the window width in a pixel or two, and then check if the current width equals or not to the one before the resize

in other words, if you succeeded to resize the window, you're probably inside a popup.

good luck.

blocks|key|375631|text|对我来说，我实现了一个可以通过window.open(..)在窗口弹出窗口中显示的注销屏幕。或来自单个页面内的链接。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|375632|我需要确定：|375633|1)如果我的注销屏幕在弹出窗口中，则：|375634|event.preventDefault();
window.close();|code-block|syntax|javascript|375635|2)否则使用浏览器返回功能..|375636|window.history.back();|375637|我的解决方案是:如果页面在弹出窗口中，在我的示例中，它的窗口页面历史记录为1：|375638|event.preventDefault();
if+(window.history.length+===+1)+{
++++window.close();
}+else+{
++++window.history.back();
}|375639|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|Y|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|Z|8|@]|9|@]|A|$I|J]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|R|5|H|7|11|8|@]|9|@]|A|$I|J]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

For me, i was implementing a Logout screen that could be shown in a window popup via window.open(..) or from a link within a single page.

I needed to determine:

1) if my Logout screen is within a popup, then:

<pre><code>event.preventDefault();
window.close();
</code></pre>

2) otherwise use the browser back function..

<pre><code>window.history.back();
</code></pre>

My solution:
If the page is within a popup, in my case it has a window page history of 1:

<pre><code>event.preventDefault();
if (window.history.length === 1) {
 window.close();
} else {
 window.history.back();
}
</code></pre>

blocks|key|375704|text|我在"Typescript/Nodejs“中实现了弹出窗口的”close“按钮和”_self“窗口的”cancel“按钮，我相信它也适用于JavaScript。因此，我需要确定屏幕是否在弹出窗口中打开|type|unstyled|depth|inlineStyleRanges|entityRanges|data|375705|if(window.opener+%7C%7C+window.history.length+===+1)+
+++++isPopupWindow+=+true;
else+
+++isPopupWindow+=+false;|code-block|syntax|javascript|375706|"window.opener“适用于几乎所有的浏览器，但是IE有问题，所以我使用了"window.history.length”来处理IE的问题。|375707|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|$]]

I was implementing 'close' button for popup window screen and 'cancel' button for '_self' window in "Typescript/Nodejs" and believe it will work for JavaScript as well.
So I needed to determine if screen is opened in a popup

<pre><code>if(window.opener || window.history.length === 1) 
 isPopupWindow = true;
else 
 isPopupWindow = false;
</code></pre>

"window.opener" works for almost all the browsers but having issue with IE so to handle IE issue I used "window.history.length".

This question is not the duplicate of <a href="https://stackoverflow.com/questions/6963240/if-window-is-popup">if window is popup</a> , But a similar one. 

I am developing a extension which injects scripts to all web pages. I need to detect whether the window is popup or not.

Note:
I am not the one who is opening the popup window, So the above solution won't work.

Check whether a window is Popup or not?

这个问题不是的翻版，而是一个类似的问题。我正在开发一个扩展，注入脚本到所有网页。我需要检测窗口是否弹出。注意:我不是那个打开弹出窗口的人，所以上面的解决方案不起作用。

问检查是否有窗口弹出？
EN

回答 10

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问检查是否有窗口弹出？EN

回答 10

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问检查是否有窗口弹出？
EN