inject JS code inside a frame that is inside an iframe

[lsri8088]

Hello,

I want to inject JavaScript code with a chrome extension, within a frame that is inside an iframe and that inside another iframe.

Page

  |-- iframe 1

         |-- iframe2

                |-- frame (no iframe), where I want to inject code

This is possible? how?

Thanks!

[lsri8088]

The solution is to inject the code several times, using the method 1 here: http://stackoverflow.com/questions/9515704/building-a-chrome-extension-inject-code-in-a-page-using-a-content-script

In manifest.json file:

[...]
"content_scripts": [
 {
  "matches": ["https://myurl/*", "https://myurl/*/*"],
  "js": ["content_script.js" ],
  "all_frames": true
 }
    ],
 "web_accessible_resources": ["script.js"]
[...]

In scrtips.js file: the code you want to inject

In content_script.js file:

var s = document.createElement('script');
s.src = chrome.extension.getURL('script.js');
(document.head||document.documentElement).appendChild(s);
s.onload = function() {
    var s2 = document.createElement('script');
 s2.src = chrome.extension.getURL('script.js');
 (document.head||document.documentElement).appendChild(s2);
 s2.onload = function() {
 var s3 = document.createElement('script');
 s3.src = chrome.extension.getURL('script.js');
 (document.head||document.documentElement).appendChild(s3);
 };
};

More details here: http://stackoverflow.com/questions/33414016/inject-js-code-inside-a-frame-that-is-inside-an-iframe

:)

[jagdish achara]

Hi,

I'm using the same but I notice that js is not loaded in all iFrames...do you notice the same? I don't know if it's a bug or what...

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[lsri8088]

By testing, I have seen that it is not necessary to inject the code several times. Just do it once. But if you do so, it works, inserted in all frames: