grep into [object Object] list

grep into [object Object] list

Hi, 

   How can i grep / filter into an [object Object] list ? Ive tryed followng code without success.

Thanks

  1. var cg = {"BE":"Europe","FR":"Europe","MO":"Africa","NG":"Africa"}

  2. var arr = $.grep(cg,function(index,value) { return value == 'Europe' });