Hello Abu,
following your documentation I created a column like this:

$col = array();
$col[“title”] = “Map”;
$col[“name”] = “map”;
$col[“editable”] = true;
$col[“formatter”] = “function(cellval,options,rowdata){if (cellval == ‘default’){return ‘<a target=\”_blank\” href=\”map.php?gpx=’ + rowdata.ID + ‘\”>’ + ‘map_link</a>’;} else {return ‘<a target=\”_blank\” href=\”‘ + cellval + ‘\”>’ + cellval + ‘</a>’;}}”;
$col[“unformat”] = “function(cellval,options,cell){var rowdata = jQuery(‘#list1’).getRowData(options.rowId);return rowdata[‘ID’];}”;
$cols[] = $col;

The formatter part works properly, the problem is with the col[“unformat”]: when I try to edit a record the browser freezes and after a few seconds a popup comes out (“A web page is slowing down your browser. what would you like to do”).

To investigate I replaced return rowdata[‘ID’] with alert (rowdata[‘ID’]). In this way it comes out a javascript popup with the correct ID value, but when I close the popup, the same popup reopens countless times…it is clear that there is a kind of infinite loop.

Thanks