What does the URL parameter after hype_generated_script.js?xxx do?

In the exported html file, I see that the javascript is referenced like this “hype_generated_script.js?xxxxxx”. The xx’s seem to be a random number.
I’m just wondering if this is needed at all, and if so, what does it do ?

Since this is a random number, is there an actual reason for calling the javascript like this ?

Hi Daniel, thanks for explaining.
I did use the search function, but I guess I did not use the right keywords. The topic you linked did not come up in my search, my apologies.

No worries! Not an easy thing to search for. Let me know if I can clarify anything.