如何在Chrome扩展程序中的popup.html中访问iframe

Question

I have a chrome extension that opens a webpage via an iframe inside it's popup.html

What I need to do is detect when the user browses to certain URLs in the iframe, and then open those URLs as a new tab.

I was trying to access the .location of the iframe, but unfortunately was getting the policy issues between "chrome-extensions" and "http"

I've been researching, and I'm seeing a lot of notes on using content scripts, but I'm really not understanding how they work fully. Most examples are trying to inject code into current pages in the browser itself so I don't think they apply. Is a content script what I need?

Any help would be most helpful.

Answer 1

不可能，这是不可能的，因为chrome扩展名弹出窗口是另一个域站点，您无法在站点内访问它。

Answer 2

I've been trying to do the same thing and i found this answer on SO. This worked for me and may be can work in our case as well. Just in case if the link may stop working in future, i'm copying his answer here:

"content_scripts": [{
    "matches": ["http://*/*", "https://*/*"],
    "js": ["content_frame.js"],
    "all_frames": true
}],

By setting all_frames to true you will inject/include content_frame.js javascript file into top document and all iframes. In case you just need javascript injected in iframe but not in top document you can check inside your content_frame.js file like this:

if (parent === top) {
    // here you can put your code that will run only inside iframe
}