Thanks for your reply! I want to prevent summary cells from being selected whenever I try to select cells in the table. As you know, there are many ways to select cells—using the mouse, using keyboard shortcuts, or clicking the top-left cell. How can I prevent summary cells from being selected under any circumstances?
Thank you for the details. In this case I think you can try several options. First, you can check this option, that will allow you to disable the visual selection: Options API reference - JavaScript Data Grid | Handsontable I would recommend to run this option within the afterDocumentKeyDownor afterOnCellMouseDown hooks with the updateSettingsto apply it only for your chosen range of cells.