//Add data
for (var col = 1; col < 6; col++) {
    for (var row = 2; row < 11; row++) {
        activeSheet.setValue(row, col, row + col);
    }
}

$("#button1").click(function () {
spread.options.allowUndo = true;
var srange = new GC.Spread.Sheets.Range(10, 5, 1, 1);
var frange = new GC.Spread.Sheets.Range(11, 5, 5, 1);
spread.commandManager().execute({cmd: "fill", sheetName: "Sheet1", startRange: srange, fillRange: frange, autoFillType: GC.Spread.Sheets.Fill.AutoFillType.fillSeries, fillDirection: GC.Spread.Sheets.Fill.FillDirection.down });
});

<input type="button" id="button1" value="button1"/>

activeSheet.getCell(0, 0).backColor("yellow");
activeSheet.getCell(0, 0).value(10);
activeSheet.setValue(0, 2, 15);            
var sourceRange = new GC.Spread.Sheets.Range(0, 0, 1, 1);
var targetRange = new GC.Spread.Sheets.Range(0, 1, 1, 3);
spread.options.allowUndo = true;
spread.commandManager().execute({cmd: "fill", sheetName: "Sheet1", startRange:sourceRange, fillRange: targetRange, autoFillType: GC.Spread.Sheets.Fill.AutoFillType.fillFormattingOnly, fillDirection: GC.Spread.Sheets.Fill.FillDirection.right});