js function to get filename from url

Use the match function.

function GetFilename(url)
{
   if (url)
   {
      var m = url.toString().match(/.*\/(.+?)\./);
      if (m && m.length > 1)
      {
         return m[1];
      }
   }
   return "";
}

Similar to the others, but...I've used Tom's simple script - a single line,
then you can use the filename var anywhere:
http://www.tomhoppe.com/index.php/2008/02/grab-filename-from-window-location/

var filename = location.pathname.substr(location.pathname.lastIndexOf("/")+1);

Why so difficult?

var filename = url.split('/').pop().split('#')[0].split('?')[0];

var filename = url.split('/').pop()