SPSangeetha Priya Murugan Syncfusion Team February 8, 2023 06:39 AM UTC
We have maintained the parsed value
for date-formatted values in the "value" property and the
formatted string in the "format" property of the cellModel.
Therefore, we suggest that you use the getDisplayText method to get the
displayed value of the cell. It is not an issue on our end; if we open the same
JSON in a spreadsheet, it applies the date formats as they are. Alternatively,
if you export that JSON to Excel, it is exported properly. Please find the API