Handsontable example

HTML

<script src="https://cdn.jsdelivr.net/npm/handsontable@13.1/dist/handsontable.full.min.js"></script>
<link type="text/css" rel="stylesheet" href="https://cdn.jsdelivr.net/npm/handsontable@13.1/dist/handsontable.full.min.css" /> 
<script src="https://handsontable.com/docs/scripts/fixer.js"></script>

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

Babel + JSX

import Handsontable from 'handsontable';
import 'handsontable/dist/handsontable.full.min.css';

// generate an array of arrays with dummy data
const data = new Array(1000) // number of rows
  .fill()
  .map((_, row) => new Array(500) // number of columns
    .fill()
    .map((_, column) => `${row}, ${column}`)
  );

const container = document.querySelector('#example1');
const hot = new Handsontable(container, {
  data,
  height: 600,
  colWidths: 47,
  rowHeaders: true,
  colHeaders: true,
  contextMenu: true,
  mergeCells: [
    { row: 1, col: 1, rowspan: 3, colspan: 400 },
    { row: 3, col: 4, rowspan: 2, colspan: 450 },
    { row: 5, col: 6, rowspan: 3, colspan: 480 }
  ],
  licenseKey: 'non-commercial-and-evaluation'
});