It’s the main content of a mail I received last week.
It decided me to write a JS Mixer application, based on CSS Mixer.
The big part of the work was already done, I just needed to adapt my code.
Just like CSS Mixer, you can download it from codeplex : http://jsmixer.codeplex.com/
You can also download it from some software websites.
With ASP.NET WebForms, you can achieve the same result by setting a few propertie to the ScriptManager control.
But the advantage to use a tool like JSMixer, is that your server doesn’t have to do the work : it’s already done !
And when you spare some work to your server, your server is happy !