How to understand such an entry /script.js?param=value?

Question

JavaScript

What kind of parameter transfer is it, how is it to be caught, it's not necessary to parse it with your hands?

Answer 1

Sometimes they set that the script (or some script content) is not cached by the browser.

Answer 2

The parameter is processed by the server or the server script-wrapper (giving this js script) to issue the required version of the script to the client, its special settings, etc. (while maintaining the caching functionality on the client).

Answer 3

The most common GET parameter. Usually handled by the web server, or some application that the web server will forward the request to.