How to load multiple js files after a condition is met?

Question

JavaScript

About ten or even more js files need to be loaded into the project after the condition is met.
Option via

var script=document.createElement('script');
script.src='http://hostjs-mybb2011.narod.ru/js/alert_tst.js';
document.body.appendChild(script);

does not fit, because, if I understand correctly, for each file you will have to prescribe such a thing.
What are other options for solving my problem?

Answer 1

register(['a.js', 'b.js', 'etc.js']);

function register(urls) {
  urls.forEach(function(url) {
    var script=document.createElement('script');
    script.src = url;
    document.body.appendChild(script);
  });
}

Answer 2

In such cases, they usually make a subroutine that takes a list of urls as input. The
subroutine bypasses the list of urls and creates script elements.
This thing will be written once