Merged cells

To enable the merge cells feature, set the mergeCells option to be true or an array. To initialize Handsontable with predefined merged cells, provide merged cells details in form of an array: mergeCells: [{row: 1, col: 1, rowspan: 2, colspan: 2}]

var
  container = document.getElementById('example1'),
  hot;

hot = new Handsontable(container, {
  data: Handsontable.helper.createSpreadsheetData(100, 18),
  colWidths: [47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47],
  rowHeaders: true,
  colHeaders: true,
  contextMenu: true,
  mergeCells: [
    {row: 1, col: 1, rowspan: 3, colspan: 3},
    {row: 3, col: 4, rowspan: 2, colspan: 2},
    {row: 5, col: 6, rowspan: 3, colspan: 3}
  ]
});