'How to get reference to the iframe from which script html tag was generated?

I have small snippet that is inside iframe and generates script html tag and appends it to the window.top.document.head.

Now I want to know how do I check from within potato.js from which iframe it was generated from once it is already loaded?

<!DOCTYPE html>
    <html lang="en">
    <head>
    </head>
    <body>
        <iframe>
            <!DOCTYPE html>
            <html>
            <head>
                
            </head>
            <body>
                <script>
                    (function() {
                        var s = document.createElement('script');
                        s.setAttribute('type','text/javascript');
                        s.setAttribute('src','https://test.com/potato.js');
                        window.top.document.head.appendChild(s);
                    })();
                </script>
            </body>
            </html>
        </iframe>
    </body>
    </html>

Edit: I can not change this code inside the iframe

javascript iframe

Solution 1:^[1]

That information isn't stored automatically.

The only way I can think of would be to add an expando-prop to the script with a reference to the current window (i.e. the frame's window)…

s.sourceWindow = window;

… then read that from within potato.js …

const sourceWindow = document.currentScript.sourceWindow;

… and then loop over all the frames (window.frames) looking for a match.

Since you are using window.top and not window.parent you might need to be recursive there.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1	Quentin

'How to get reference to the iframe from which script html tag was generated?

Solution 1:[1]

Sources

Related Questions

Solution 1:^[1]