We have a situation, based on value in a particular cell dynamically rows and cells get merge. In this case the data is binding perfectly but its rendering slowly and user will not know whether its working or not.
[GH #8799, #5687] Data rendering is slow on dynamic merge
Merging larger areas of cells may cause some performance degradation. Can you share a bit more details on
- how many cells are merged
- what’s the logic under merging (what action trigger merging)
- how many cells are merged : there can be 10 rows and 10-15 cells to merge within the row.
- what’s the logic under merging (what action trigger merging) : We are appending the mergeCells property and trigger hotTable.updateSettings with new merge cells like
this.hotTable.updateSettings({ mergeCells: mergCells });
You can wrap the this.hotTable.updateSettings({ mergeCells: mergCells }); with this.hotTable.batch() but that won’t drastically change the performance.
As there are no additional questions I can only set myself a notification to update you once any of the two mergeCells + performance issue from this list https://github.com/handsontable/handsontable/issues?q=is%3Aopen+is%3Aissue+label%3A"Merge+cells"+label%3A"Core%3A+Performance" are fixed.