Execute script only on certain admin pages

Question

To solve this problem i've used this in my js file:

var location = String(window.location);

//only runs in post.php and post-new.php
if(location.search('post.php') != -1 || location.search('post-new.php') != -1 )
{

}

But it's does not seem like i solid solution. Are there any other way?