我也有同样的问题，因为我买了一个CSS模板，它通过http://whatever.js.com/javascript.js抓取了一个外部javascript文件。我在浏览器里打开了那个页面，然后把它改成了https://whatever……使用SSL，它工作，所以在我的HTML javascript标签，我只是改变了URL使用https而不是http，它工作。

这意味着你从https调用http。你可以在你的脚本标签中使用src="//url.to/script.js"，它会自动检测。

或者你可以在你的src中使用https，即使你将它发布到一个http页面。这将避免评论中提到的潜在问题。

我发现这篇博客文章澄清了一些事情。引用最相关的部分:

Mixed Active Content is now blocked by default in Firefox 23! What is Mixed Content? When a user visits a page served over HTTP, their connection is open for eavesdropping and man-in-the-middle (MITM) attacks. When a user visits a page served over HTTPS, their connection with the web server is authenticated and encrypted with SSL and hence safeguarded from eavesdroppers and MITM attacks. However, if an HTTPS page includes HTTP content, the HTTP portion can be read or modified by attackers, even though the main page is served over HTTPS. When an HTTPS page has HTTP content, we call that content “mixed”. The webpage that the user is visiting is only partially encrypted, since some of the content is retrieved unencrypted over HTTP. The Mixed Content Blocker blocks certain HTTP requests on HTTPS pages.

在我的例子中，解决方案是简单地确保jquery包含如下(注意去除协议):

<link rel="stylesheet" href="//code.jquery.com/ui/1.8.10/themes/smoothness/jquery-ui.css" type="text/css">
<script type="text/javascript" src="//ajax.aspnetcdn.com/ajax/jquery.ui/1.8.10/jquery-ui.min.js"></script>

请注意，临时的“修复”是点击地址栏左上角的“屏蔽”图标，并选择“禁用此页面上的保护”，尽管出于明显的原因，不建议这样做。

更新:这个来自Firefox (Mozilla)支持页面的链接在解释什么是混合内容方面也很有用，正如上面一段所给出的，它实际上提供了如何显示页面的细节:

Most websites will continue to work normally without any action on your part. If you need to allow the mixed content to be displayed, you can do that easily: Click the shield icon Mixed Content Shield in the address bar and choose Disable Protection on This Page from the dropdown menu. The icon in the address bar will change to an orange warning triangle Warning Identity Icon to remind you that insecure content is being displayed. To revert the previous action (re-block mixed content), just reload the page.

简单地将HTTP更改为HTTPS就解决了这个问题。

错误的:

<script src="http://code.jquery.com/jquery-3.5.1.js"></script>

正确的:

<script src="https://code.jquery.com/jquery-3.5.1.js"></script>

我已经设法修复这个使用这些:

Firefox用户

在地址栏中打开新选项卡，输入about:config，进入配置界面。 搜索security.mixed_content.block_active_content 将TRUE改为FALSE。

Chrome用户

单击URL旁边的“不安全警告” 在弹出框中单击“站点设置” 将不安全内容更改为允许 关闭并刷新页面

如果你的应用服务器是weblogic，那么确保WLProxySSL ON条目存在(也要确保它不应该被注释)在webserver的conf目录下的weblogic.conf文件中。然后重新启动web服务器，它将工作。