Call CI controler functiona from View using ajax

Here is simple function through you can call controller function from view using ajax

 $.ajax({
             type: "POST",
                     async:false,
                    url: '<?php echo base_url('admin/editmodule')?>',
                    data: {'id':id,'modulename':modulename},
                    success: function(msg) {
                        alert('Module edited');
                        $('#modulename_'+id).text(modulename);
                        
                    }
                });