Replace full url script

[churongcon]

Hello.
I have fetch url like this https://demo.thuan.workers.dev/?http://www.zibri.org/2019/07/your-own-cors-anywhere-proxy-on.html

If site have script like this

<script src="/u/1587166/rotate3.js"></script>

 
How to replace with http://www.zibri.org//u/1587166/rotate3.js

[Zibri]

This is not intended as a prosy.
Is intended to retrieve data.
It is your code that must change all local references to absolute references pointing to your own cors proxy.