//This example uses the isDirtySuspended method.
var customers = [
               { ID: 0, Name: 'A', Info1: 'Info0' },
               { ID: 1, Name: 'B', Info1: 'Info1' },
               { ID: 2, Name: 'C', Info1: 'Info2' },
            ];
activeSheet.setDataSource(customers);
activeSheet.suspendDirty();
alert(activeSheet.isDirtySuspended());
activeSheet.resumeDirty();
alert(activeSheet.isDirtySuspended());