How to access form fields in a popup window?

Hello! Many sites use pop-UPS. And often in these Windows, there are forms. There are many opportunities to insert the page your js code. for example imacros . e[tension chrome . As of js you can see the names of the form fields and access them?
March 23rd 20 at 18:44
1 answer
March 23rd 20 at 18:46
I think that there is nothing difficult to create a prompt() the sign to customize it and insert everything you need. Besides, I'm not sure that this is the reason for implementing AJAX

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