Internet Explorer添加和网站
[英]Internet explorer add on and the website
问题描述
Is the website able to determine if a particular IE add on has been installed or not? 
网站是否可以确定是否已安装特定的IE插件？
How do you have the web page detect the IE add on? 您如何让网页检测IE插件？
4 个解决方案
解决方案1
1 已采纳 2010-09-12 19:56:00
In general, no; 一般来说，不可以； however it depends on what the add-on does. 但是，这取决于插件的功能。 If it modifies the web page in some way (eg removing ads) then it should be possible to use Javascript to detect if the current page has been modified. 如果它以某种方式修改了网页（例如删除广告），则应该可以使用Javascript检测当前页面是否被修改。
解决方案2
1 2010-09-12 20:07:28
If the addon is available via Javascript/ActiveX interface, its absense may be checked by catching an exception on calling some (missing) addon's function. 如果可以通过Javascript / ActiveX接口使用该插件，则可以通过在调用某些（缺少的）插件函数时捕获异常来检查其缺失。
This way, checking for few common addons leads to nice browser's fingerprinting method. 这样，检查一些常见的附加组件将导致不错的浏览器指纹识别方法。 Refer to: http://www.informatica64.com/Wbfingerprinting/ 请参阅： http ： //www.informatica64.com/Wbfingerprinting/
解决方案3
0 2010-09-12 19:55:52
No doubt you can detect most through JavaScript; 毫无疑问，您可以通过JavaScript进行最多的检测。 it'd be addon-specific. 它是特定于插件的。
解决方案4
0 2010-09-13 20:46:55
In IE just expose an Active X control from your add-on, and then instantiate it using new ActiveXControl() inside a Javascript try {} block. 在IE中，只需从您的加载项中公开一个Active X控件，然后使用Javascript try {}块中的new ActiveXControl()实例化它即可。 If it succeeds, your extension is installed. 如果成功，则说明您的扩展程序已安装。 If it fails, probably not. 如果失败，可能不会。 You can even expose a .version() method to get the version of the control. 您甚至可以公开.version()方法以获取控件的版本。
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