If I secure my browser using CISecurity's baseline for Firefox, can I copy all the ".js" files from the hardened system to another?

Question

I own multiple systems. I have hardened one browser following the guideline provided by CISecurity. Instead of repeating all the configurations performed on that one system, can I just copy all the ".js" files from the secured system to my other systems?
The ".js" files can be modified using a text editor. Is there a way to lock down these files to prevent modification?

Answer 1

Dear Joel
i know two ways to prevent browser from caching your files
First : The Hard way
just add ? +Math.random()  in the end of your file
Like this :
in HTML :
<script type="text/javascript">
(function(){
     var e = document.getElementsByTagName("script")[0];
     var d = document.createElement("script");
     d.src = "index_edgePreload.js?"+Math.random()+"";
     d.type = "application/javascript";
     d.async = true;
     d.defer = true;
     e.parentNode.insertBefore(d,e);
</script>
instead of this Line in HTML that created by EA :
<script type="application/javascript" src="index_edgePreload.js></script>
Disadvantage : you should do this for all of files you want to prevent from caching
===================================================
Second : The easyest way
You Should have Access to .htaccess file in your Server
Open your .htaccess file and paste these codes in it :
ExpiresActive On
ExpiresByType application/json "access plus 1 seconds"
ExpiresByType text/json "access plus 1 seconds"
ExpiresByType text/plain "access plus 1 seconds"
ExpiresDefault "access plus 1 month"
you can type what ever type of file you want to prevent from caching in browser
Advantage : after do this in your .htaccess file all files with the type you want will not Cache in your browser
Easy is'nt it ?
Zaxist