How to point to a controlle from a js file?

[eluser]chefnelone[/eluser]
Hello.

I'm doing a ajax call (using jquery) from a js file like this:

Code:

$.post("http://www.mysite.com/site/order", order, function(theResponse)...

where site is the controller and order is the method
Is there any way to point the controller with this line:

Code:

$.post("site/order", order, function(theResponse)...

or should I use <?php echo base_url(); ?> in the js file as well?