How to replace Javascript of production website with local Javascript?

Question

On my production website, I have compiled Javascript.

It would be very convient for

Answer 1

What about using a subdomain like http://static.example.comfor static files (e.g. .js files), and changing the hostfile?

Add the following line to the hostfile (/etc/hosts for Linux, C:\WINDOWS\System32\drivers\etc\host):

static.example.com 127.0.0.1

Of course you've to run a server with the files from http://static.example.com/ on 127.0.0.1.

Another solution is using a (local) proxy server like Privoxy for redirecting http://example.com/js/ to http://localhost/js/.