Unable to add more than one cell comment

[crazyThoughts]

I m trying to add cell comments in my angular project but and error pop shows

[Eric P Sheets]

What version of Excel are you using? Can you share the bad file as well as the comment structure for one of the comments that was removed?

Excel recently changed how comments worked, and SheetJS shifted to support the new threaded comments, so it's possible the fallback isn't compatible with some older versions.

[crazyThoughts]

Thank you for responding i have used the latest version now I'm not getting error, but Thereaded comments are coming blank now

[crazyThoughts]

[Eric P Sheets]

What version of Excel are you using?

Also, can you test the attached file? comments_example.xlsx

It was generated as follows:

var wb = XLSX.utils.book_new();

var ws = XLSX.utils.aoa_to_sheet([["A1"], ["A2"]]);

if(!ws.A1.c) ws.A1.c = [];
ws.A1.c.push({a:"SheetJS", t:"This comment is visible"});

if(!ws.A2.c) ws.A2.c = [];
ws.A2.c.hidden = true;
ws.A2.c.push({a:"SheetJS", t:"This comment will be hidden"});

XLSX.utils.book_append_sheet(wb, ws, "Sheet1");


var ws = XLSX.utils.aoa_to_sheet([["A1"], ["A2"]]);

if(!ws.A1.c) ws.A1.c = [];
ws.A1.c.push({a:"SheetJS", t:"This is not threaded"});

if(!ws.A2.c) ws.A2.c = [];
ws.A2.c.hidden = true;
ws.A2.c.push({a:"SheetJS", t:"This is threaded", T: true});
ws.A2.c.push({a:"JSSheet", t:"This is also threaded", T: true});


XLSX.utils.book_append_sheet(wb, ws, "Sheet2");
XLSX.writeFile(wb, "comments_example.xlsx")

[Eric P Sheets]

The updated logic is now aligned with how the Pro builds write comments.

SheetJSThreadedComments.xlsx
small example generated using the same example code. That should have visible comments both in Excel 2019 and in older versions of Excel. If the file is showing blank comments or looks corrupted, let us know what version of Excel you are using.