Does anyone have an idea, on how you could implement a "loading icon" via a clientscript?

Something like this? https://suiterep.com/2021/07/29/loading-popup/

Already tried that, does not work

Anything similar is going to take a bit of hacking, so you may as well give up if you can't adapt that yourself?

Nah im not like u

I did not mean that as a personal attack, just pointing out that I've not seen anything that's a cut and paste. Anyway, I'll leave you to it

im not looking for "cut and paste", i was just asking if anybody had a lib or something similiar they used and would recommend. But sure, interpret it as you would like

Another possibility on SO: https://stackoverflow.com/questions/55345216/how-can-i-use-an-extjs-library-to-load-a-progress-bar-on-screen-and-monitor-the

I've used swal2 with great results. I recommend against using extjs directly as in that SO answer. NetSuite could decide to remove the library or change the version at any point and break your code

I had problems with using sweetalert2, because i am experincing bugs with clientsscripts that run 2.1. And sweetalert needs to run 2.1, since the lib uses arrow function expressions which clientscript 2.0 does not support