能否在用户访问的每个网页上动态放置一段代码
因此，我们有一个程序，用户可以通过从他们访问的网页复制文本（按 alt+tab 键）到程序，然后将其粘贴为输入来使用。如果用户能够直接在网站上进行操作，将会更加方便。
我们正在考虑一个小型且可扩展的面板，跟踪他们访问的每个站点。这可能吗？自动粘贴的代码片段，或者调用的 JavaScript 命令将动态粘贴代码（Scratchpad 在这里有任何帮助，至少在 FireFox 中）。
我们从未制作过 FF 附加组件，但看起来如果动态面板的想法落空，附加组件将是下一个最好的选择。
基本上，理想情况下，用户应该能够复制文本，输入组合键或单击按钮，查看界面并粘贴文本。这些方法中的任何一个都有效吗？
So we have a program that the user can use by copying text from a webpage they visit, alt+tabbing to the program, then pasting it as input. It would be more convenient for users to be able to do it directly in the site.
We were thinking of a panel that would be small and expandable, following them to each site they visit. Is this possible? Either a snippet of code that is auto pasted, or a JavaScript command called that would dynamically paste the code (is Scratchpad any help here, at least in FireFox).
We've never made a FF add-on, but it seems like if the dynamic panel idea falls through, an add-on would be the next best thing.
Basically, users should ideally be able to copy text, either enter a key combo or click a button, see the interface and paste in the text. Would either of these methods work?
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浏览器插件或用户脚本当然可以做到这一点。
您还可以编写用户脚本并使用用户脚本编译器（例如这个）来将其转换为“真正的”插件。
或者，您的应用程序可以充当 HTTP 代理并动态注入它，但我猜这可能比其他两种方法更复杂。
A browser add-on or a userscript could certainly do this.
You can also write a userscript and use a user script compiler (such as this one) to convert it to a "true" Addon.
Alternatively your application could act as a HTTP proxy and inject it dynamically, but I'd guess that this would probably be more complicated than the other two approaches.
这个网站 Polyvore 曾经做过类似的事情，尽管在 2 分钟内我四处搜寻找不到它，但我已经使用过它，并且我认为 Google 和 Digg 使用该技术已经有一段时间了。据我回忆，它涉及 iframe 和浏览器中的书签。
基本上，您可以下载一小段代码，将其放在书签栏中，这将允许您导航到时尚网站，单击书签，复制图片并将其插入回 Polyvore。
This site Polyvore used to do something similar, although in the 2 mins hunting around I could not find it, but I have used it and I think the technique was used by Google and Digg for a while. From what I recal it involved iframes and a bookmark in your browser.
Basically you could download a small piece of code that would sit in your bookmarks bar and this would allow you to navigate to a fashion website click on the bookmark copy a picture and insert it back into Polyvore.