Handsontable example

HTML

<script src="https://cdn.jsdelivr.net/npm/handsontable@12.0.1/dist/handsontable.full.min.js"></script>
<link type="text/css" rel="stylesheet" href="https://cdn.jsdelivr.net/npm/handsontable@12.0.1/dist/handsontable.full.min.css" /> 

<div id="example1" class="hot "></div>

JavaScript

const container = document.querySelector('#example1');

const hot = new Handsontable(container, {
  data: Handsontable.helper.createSpreadsheetData(100, 50),
  height: 320,
  colWidths: 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 }
  ],
  licenseKey: 'non-commercial-and-evaluation'
});