How to debug a script?

Question

JavaScript

There is a site, and there is a script on this site that needs to be debugged, it connects like this:

<script src="/js/clientapp.js?v=1463417706211" type="text/javascript">

1463417706211 - time, i.e. with each download is different
if you find this script in chrome in the Sources tab and add breakpoints, then after reloading the page they will all fly off, because the name due to ?v=1463417706211 will be different, how to solve the problem?
The site is not mine.