Overview

Rich text data is an anonymous object, you should follow the JSON Schema.

You can set the value for the specified cell in the specified sheet area using the following code:

    sheet.setValue(0,2,{richText:[{style:{font:'bold 24px Arial'},text:'SpreadJS'}]}, GC.Spread.Sheets.SheetArea.colHeader);
    sheet.setValue(2,0,{richText:[{style:{font:'bold 24px Arial'},text:'SpreadJS'}]}, GC.Spread.Sheets.SheetArea.rowHeader);
    sheet.setValue(2,0,{richText:[{style:{font:'bold 24px Arial'},text:'SpreadJS'}]}, GC.Spread.Sheets.SheetArea.viewport);

You can get the unformatted data from the specified cell in the specified sheet area using the following code:

    sheet.getValue(1, 1, GC.Spread.Sheets.SheetArea.viewport, GC.Spread.Sheets.ValueType.richText);

Updated: Rich text now support list

    sheet.setValue(3, 0, {
        richText:[{
            type: GC.Spread.Sheets.ListType.disc,
            level: 0,
            richText: [{
                style:{font:'bold 24px Arial'},
                text:'SpreadJS'
            }]
        }]}, GC.Spread.Sheets.SheetArea.viewport);