Handsontable example

by oo7_sakshi

HTML

<div id="example1" class="hot1 hot handsontable"></div>

CSS

.make-me-red {
  color: #f00;
}


</style><!-- Ugly Hack due to jsFiddle issue -->

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

JavaScript

var data = [
      ['', 'Tesla', 'Nissan', 'Toyota', 'Honda'],
      ['2017', -5, '', 12, 13],
      ['2018', '', -11, 14, 13],
      ['2019', '', 15, -12, 'readOnly']
    ],
    container,
    hot1;
  
  function firstRowRenderer(instance, td, row, col, prop, value, cellProperties) {
    Handsontable.renderers.TextRenderer.apply(this, arguments);
    td.style.fontWeight = 'bold';
    td.style.color = 'green';
    td.style.background = '#CEC';
  }
  
  function negativeValueRenderer(instance, td, row, col, prop, value, cellProperties) {
    Handsontable.renderers.TextRenderer.apply(this, arguments);
  
    // if row contains negative number
    if (parseInt(value, 10) < 0) {
      // add class "negative"
      td.className = 'make-me-red';
    }
  
    if (!value || value === '') {
      td.style.background = '#EEE';
    }
    else {
      if (value === 'Nissan') {
        td.style.fontStyle = 'italic';
      }
      td.style.background = '';
    }
  }
  // maps function to lookup string
  Handsontable.renderers.registerRenderer('negativeValueRenderer', negativeValueRenderer);
  
  container = document.getElementById('example1');
  hot1 = new Handsontable(container, {
    data: data,
    afterSelection: function (row, col, row2, col2) {
      var meta = this.getCellMeta(row2, col2);
  
      if (meta.readOnly) {
        this.updateSettings({fillHandle: false});
      }
      else {
        this.updateSettings({fillHandle: true});
      }
    },
    cells: function (row, col) {
      var cellProperties = {};
      var data = this.instance.getData();
  
      if (row === 0 || data[row] && data[row][col] === 'readOnly') {
        cellProperties.readOnly = true; // make cell read-only if it is first row or the text reads 'readOnly'
      }
      if (row === 0) {
        cellProperties.renderer = firstRowRenderer; // uses function directly
      }
      else {
        cellProperties.renderer = "negativeValueRenderer"; // uses lookup map
      }
  
      return...