getHiddenColumnValue(col,row)

Set a Table to be Editable for information on making a Table editable.
Table Properties for general Table settings.

For a hidden column (often a primary key column) in an Editable Table, retrieves the value in the specified row of the hidden column.

Parameters

col: hidden column name
row: row index

Example

for(var i=0; i<TableView1.table.length; i++) {
  if(TableView1.getFormRow(i).rowState == CHANGED) {
    var hiddenValue = TableView1.getHiddenColumnValue("columnName", i);
  }
}

Either syntax below can be used in component script:

getHiddenColumnValue                 // unqualified
TableView1.getHiddenColumnValue      // qualified

For onInit/onRefresh scripts, and for component and property scripts on other components, the second (qualified) form is required.