How to inject script in iframes of a extension page

[Himanshu Mishra]

Hi I'm working on a chrome extension which opens a bunch of iframes in a extension page which I get through chrome.runtime.getUrl. Iframes are of different origin so I want to inject some content script in these iframes but executeScript does not work in "chrome://*" urls. 

Is there a way I can get around this?

Thanks!

[Deco]

This is not possible as it is a violation of CORS restrictions - other scripts can not be injected into cross-domain iframes.

Thanks,

Deco

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[wOxxOm]

Content script injection is for web pages/frames, not for extension pages/frames. For an extension page/frame there's no need to inject anything. Simply use a standard tag in your page.html or frame.html like this <script src=script.js></script> and it'll load script.js from your extension package.