How to find the value that is generated in js?

There is a website opened by the Manager - Network tab, look a download action. First loads the HTML, then see the downloaded files like this: Link

This js code as I understand it generates a <script>, because after load the HTML, add different data, probably generated js.

In my case I need to get the value: 492459884e9dbd8bd2e1e5bb92796d45 of the script, which is created via js on the link.
5e9b417818980599485456.png

Question: How to reproduce this js code to understand what data is generated?

I realized that this js generates the necessary data: Just did a search in the code: callback=s_c_il.

p.s. Don't have much experience with js do not know how this system works, a lot of code, and don't even know how to reproduce this js... where it starts...............
April 19th 20 at 12:45
1 answer
April 19th 20 at 12:47
If the value of the variable v44 will have a predictable position on the page (or in cookies or in the global object JS window) after executing all operations of preparation and loading, it is possible to get the desired result, if to use the environment Selenium. It allows you to create the environment to obtain a page similar to a full-fledged browser and allows you to manipulate components of the environment including data extraction.
@violet20 need pure php - marques commented on April 19th 20 at 12:50

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