Default server error message that appears when server responed with an error but w/o message. If server returns an error, but does not return "message", the default server error message will be displayed. let grid = new w2grid({ name: 'grid', msgServerError: 'Unknown server error', columns: [ { field: 'recid', text: 'ID', size: '50px' }, { field: 'lname', text: 'Last Name', size: '30%' }, { field: 'fname', text: 'First Name', size: '30%' }, { field: 'email', text: 'Email', size: '40%' }, { field: 'sdate', text: 'Start Date', size: '120px' }, { field: 'sdate', text: 'End Date', size: '120px' } ] });