检查用户是否安装了Chrome扩展程序 [英] Check whether user has a Chrome extension installed

问题描述

我正在构建Chrome扩展程序，整个过程按照我希望的方式进行，我需要一个外部JavaScript脚本才能检测用户是否安装了我的扩展程序。例如：一位用户安装我的插件，然后用我的脚本进入一个网站。该网站检测到我的扩展程序已安装并相应地更新了页面。

这可能吗？

解决方法

我确信有一个直接的方法（直接调用你的扩展的函数，或者通过使用JS类的扩展），而是一个间接的方法（直到更好的东西出现）：

您的Chrome扩展程序是否在您的网页上查找特定的DIV或其他元素，并使用特定的ID。

例如，

：

 < div id =ExtensionCheck_JamesEggersAwesomeExtension>< / div> 
  

执行 getElementById 并设置 innerHTML 添加到您的扩展的版本号。然后，您可以阅读该客户端的内容。

虽然如此，您应该使用直接方法。

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编辑：找到直接方法!!

使用连接这里找到的方法： https://developer.chrome.com/extensions/extension#global-events

未经测试，但你应该可以做...

  var myPort = chrome.extension.connect（'yourextensionid_qwerqweroijwefoijwef'，some_object_to_send_on_connect）; 
  

I am in the process of building a Chrome extension, and for the whole thing to work the way I would like it to, I need an external JavaScript script to be able to detect if a user has my extension installed.

For example: A user installs my plugin, then goes to a website with my script on it. The website detects that my extension is installed and updates the page accordingly.

Is this possible?

解决方案

I am sure there is a direct way (calling functions on your extension directly, or by using the JS classes for extensions), but an indirect method (until something better comes along):

Have your Chrome extension look for a specific DIV or other element on your page, with a very specific ID.

For example:

<div id="ExtensionCheck_JamesEggersAwesomeExtension"></div>

Do a getElementById and set the innerHTML to the version number of your extension or something. You can then read the contents of that client-side.

Again though, you should use a direct method if there is one available.

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EDIT: Direct method found!!

Use the connection methods found here: https://developer.chrome.com/extensions/extension#global-events

Untested, but you should be able to do...

var myPort=chrome.extension.connect('yourextensionid_qwerqweroijwefoijwef', some_object_to_send_on_connect);

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