How to track a request to a site?

Question

Computer networks

You need to track the request to the site.
Find out the page address, the transfer method (get or post), and most importantly, all the parameters.
It is also not clear yet - you need to pass all the parameters or just a few are enough, those that you want to change.
What is the problem. This is the site and its code.
The weight of the page with the code is 1 megabyte. It's about 25500 lines of code.
Phrase occurrences (to understand what is in the code) phrase-quantity:

<input 2500, <input type="hidden" 2350, submit 480, type="text" 90, <script> 28, <script type="text/javascript" 50.

There is no save button - this is the leading link href="javascript:void(0);
There is no form-data field in google chrome developer tools. Nowhere.
Page code (1 megabyte).
https://cloud.mail.ru/ public/2LHd/Y9ky3hvN9
How to track a request to a site?

Answer 1

There is no save button - this is the leading link href="javascript:void(0);

Made to block the operation of the link, look in JS scripts for handling clicking on links by its ID or CLASS attributes.
All this is in the global arrays $_SERVER, $_POST and $_GET. If there is content in $_POST, then this is a post request. The print_r($_POST); function will help you display this information. Save? Perhaps the usual file_put_content() will do for you.
When it becomes clear to you, perhaps you will find a more specific answer. Now you have given very vague information.

Answer 2

Try it with Fiddler, and if sent using AJAX, then there is another way related to reflection in JavaScript.

Answer 3

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