Required library edition:
Required library file: dhtmlxgrid.js

gets user Data

• row_id - row id. if empty then user data is for grid (not row)
• name - name of user data

Returns value of user data

   //get user row user data
   var userdata = grid.getUserData("unique_rowid","someName1");
   //get gloabal user data
   var userdata = grid.getUserData("","someName1");

See also: setUserData